test positions when all the moves losing except a winning move

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Uri Blass
Posts: 10704
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: test positions when all the moves losing except a winning move

Post by Uri Blass »

Dann Corbit wrote: Sun Jan 19, 2025 5:46 pm Another category that may be of similar interest is a single winning move and all other moves only draw or worse.
It is clearly easier to find positions of this type andf a lot of studies are of this type.
[d]1rkb4/pNp5/8/2N4p/8/5B2/4K3/8 w - - 0 1 bm Bc6
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

Second installment:

Code: Select all

2n5/3N1p2/p2pPP1n/p1p4P/PkP5/1P1p2N1/KP1p1rbp/3B4 w - - acd 999; bm e7; ce 32750; c0 "The Problemist#0556; 1991; Manella=N; (+0348.78a2b4) (c); 1-0"; c7 "The Problemist#0556;1991;W:Manella=N;(+0348.78a2b4) (c);1-0;1991"; c9 "HHdbVI.0624616.001a.29051"; dm 9; pm e7; pv e7 Rf1 Nxf1 h1=Q e8=Q Nf5 Qxc8 Nd4 Qxa6 Bc6 Nb8 Nxb3 Bxb3 Qg2 Qb6+ Bb5 Qxb5#; 
2N5/p4P2/p4RqP/P2krb2/5RNK/2PPB1P1/3P1pP1/4nQ2 b - - acd 93; bm Nf3+; ce 32676; c0 "2 Honorable Mention, wa06 {m}; 1991; Pervakov O; White wins;"; c7 "2.hm Armenian Central Chess Club ty;1991;W:Pervakov=O;(+4545.83h4d5);1-0;1991"; c9 "HHdbVI.0608755.001b.28254"; dm 46; pm Nf3+; pv Nf3+ gxf3 Qh5+ Kxh5 Bg6+ Kxg6 Rg5+ Kh7 Rg7+ Kh8 Rh7+ Kg8 Rh8+ Kg7 Rh7+ Kf8 Rh8+ Ke7 Re8+ Kd7 Rd8+ Kc7 Rd7+ Kb8 Rb7+ Ka8 Rb8+ Kxa7 Rb7+ Kxa6 Ra7+ Kb5 Rxa5+ Kb4 Rb5+ Ka3 Rb3+ Ka2 Rb2+ Ka1 Ra2+ Kb1 Rb2+ Kc1 Rb1+ Kc2 Rb2+ Kd1 Rb1+ Ke2 Re1+ Kxf2 Re2+ Kg1 Rg2+; 
2N5/p7/q1p2p2/kp6/3P4/PP3K2/5P2/2B5 w - - acd 61; bm Bd2+; ce 32708; c0 "Shakhmaty v SSSR#085 {m}; 1939; Liburkin M; White wins;"; c7 "Shakhmaty v SSSR#085;1939;W:Liburkin=M;(+3011.44f3a5);1-0;1939"; c9 "HHdbVI.1402807.001a.72895"; dm 30; pm Bd2+; pv Bd2+ b4 Bxb4+ Kb5 Nd6+ Kb6 Ba5+ Kxa5 Nc4+ Kb5 Kf4 f5 Kg5 f4 f3 Qb6 Nxb6 axb6 Kxf4 Ka6 Ke5 Kb7 f4 Kc7 Ke6 Kd8 f5 Ke8 a4 Kf8 d5 cxd5 Kxd5 Ke7 Ke5 Kf7 b4 Ke7 f6+ Kd7 a5 Kc6 a6 Kc7 f7 Kd7 f8=Q Kc6 a7 Kb5 a8=Q Kc4 Qd5+ Kc3 Qa2 b5 Qf3+ Kxb4 Qfa3+; 
2r1n1nK/q1pp2pp/p6r/3BPN1p/8/3Np1P1/1pR1P2B/5k2 w - - acd 47; bm Nh4; ce 32744; c7 "No. 293303 (id: P1275073) Kutzborski, Dieter source 1: S achsische Zeitung, No. 3974, 06/04/2013 stipulation: #12 solution: 1.g4? h4! 2.Sxh4 Txh4! 1.Sh4! (droht 2.Lg2) 1....Db7 2.Sg2 Da7 3.Sgf4 Da8 4.Txb2 Tb6 5.Tc2 Tb1 6.Sg2 Da7 7.Sh4 Db7 8.Sf5 Db6,Da7 9.g4 h4 10.Sxh4 Dc6 11.Sf5 Dxd5 12.Sxe3# 11....Dxc2 12.Sg3#"; dm 12; pm Nh4; pv Nh4 Qb7 Ng2 Qa7 Ngf4 Qa8 Rxb2 Rb6 Rc2 Rb1 Ng2 Qa7 Nh4 Qb7 Nf5 Qb6 g4 h4 Nxh4 Qc6 Nf5 Qxc2 Ng3+; 
2R2Nn1/brp1k1K1/3pPp1p/4p1p1/2Nr4/3n4/2p2p2/3B4 w - - acd 999; bm Ne3; ce 32754; dm 7; pm Ne3; pv Ne3 f1=Q Ng6+ Kxe6 Nf8+ Ke7 Nd5+ Rxd5 Bh5 Rb8 Rxc7+ Kd8 Ne6#; 
2R5/3pqNp1/4pp1p/1pp4k/5P1P/1B5K/8/8 w - - acd 47; bm Re8; ce 32722; c9 "HHdbVI.0081285.003a.03607"; dm 23; pm Re8; pv Re8 c4 Bd1+ Kg6 Rxe7 Kf5 Kg3 Ke4 Rxd7 Ke3 Nd6 Kd4 Nxb5+ Kc5 Rxg7 e5 Rg6 h5 Rxf6 e4 Bxh5 e3 Bd1 Kxb5 h5 Kb4 h6 c3 Re6 c2 Bxc2 e2 Rxe2 Kc3 h7 Kc4 h8=Q Kc5 Re1 Kd5 Qc8 Kd6 Bf5 Kd5 Rd1+; 
2R5/kp6/2p1BK2/p1P5/8/P1p2bB1/2q5/8 w - - acd 999; bm Bb8+; ce 32752; c9 "HHdbVI.1102204.007a.54823"; dm 8; pm Bb8+; pv Bb8+ Ka6 Bc4+ b5 Rc7 bxc4 a4 Qxa4 Ra7+ Kb5 Rb7+ Kxc5 Ke5 c2 Bd6#; 
3b1n1n/1p3P1P/1p1K1P1P/3PN3/p7/Pp1p4/1P1P4/1RBk4 b - - acd 59; bm Ke2; ce 32742; dm 13; pm Ke2; pv Ke2 Ra1 Kf1 Rb1 Kg2 Ra1 Kh3 Rb1 Kg3 Ra1 Kg2 Rb1 Kf1 Ra1 Ke2 Rb1 Kd1 Ra1 Kc2 Ra2 Kb1 Ra1+ Kxa1 Nf3 Nxf7+; 
3K3k/b1ppP1pB/r1r1p3/6pb/1n4N1/qpp2p2/QRR5/8 w - - acd 31; bm Bg6; ce 32738; c0 "9 Place 20th Ukraine Team champ.; 2021; V.Sizonenko; 1-0; 2021"; dm 15; pm Bg6; pv Bg6 Bxg6 Rh2+ Kg8 Rh8+ Kxh8 Rh2+ Kg8 Rh8+ Kxh8 Qh2+ Kg8 Nf6+ gxf6 Qh6 Be8 Qf8+ Kh7 Qxe8 Kh6 Qh8+ Kg6 Qh3 g4 Qxg4+ Kh7 e8Q Bc5 Qgg6+; 
3K4/2P5/3p4/1p1kp3/1P1pp3/1P2Pp2/p3P2b/1N6 w - - acd 999; bm Nc3+; ce 32746; c9 "HHdbVI.0708641.002a.33423"; dm 11; pm Nc3+; pv Nc3+ dxc3 Kd7 a1=Q c8=N Qa7+ Nxa7 Bg1 Nc8 Bxe3 Ne7+ Kd4 Nf5+ Kd5 Nxe3+ Kd4 Nf5+ Kd5 e3 f2 Ne7#; 
3n1k2/5B2/R7/R2PK3/1NP2P1n/3PP1P1/pppppppp/8 w - - acd 71; bm Kf6; ce 32728; c7 "comment: Vorbild war die siebenfache Damenumwandlung P1343264. Diese Fassung ist die Korrektur der P1343057 und erschien am 21.11.2017 im Mat-Plus-Forum. Im Gegensatz zu  alteren Versionen mu s Schwarz zwingend in Damen umwandeln."; dm 20; pm Kf6; pv Kf6 a1=Q Ra8 Qxa5 Rxa5 b1=Q Ra8 Qa1+ Rxa1 e1=Q Ra8 Qa1+ Rxa1 g1=Q Ra8 Qa1+ Rxa1 h1=Q Ra8 Qa1+ Rxa1 d1=Q Ra8 Qa1+ Rxa1 c1=Q Ra8 Qa1+ Rxa1 f1=Q Ra8 Qa1+ Rxa1 Nf5 Ra8 Nd6 Rxd8+ Ne8+ Rxe8+; 
3N2bK/6rp/R3p1B1/N1k1P2n/2Pn1pp1/2Bp2rq/4pP1b/8 w - - acd 999; bm Ndc6; ce 32752; c7 "No. 309018 (id: P1399177) Eisert, Stephan; Schauer, Bernhard source 1: Deutsche Schachbl atter, No. 2545, 04/1981 stipulation: #8 solution: 1.Sdc6! Sc2 2.Sb4 Sd4 3.f3 e1=S 4.Lxd3 Tc7 5.Sbc6 Sec2 6.Sd8 ...7.Sab7 award: 3.Preis dedication: Stefan Schneider zum ehrenden Gedenken"; dm 8; pm Ndc6; pv Ndc6 Nc2 Nb4 Nd4 f3 e1=N Bxd3 Rc7 Nbc6 Nec2 Nd8 h6 Ndb7+ Rxb7 Nxb7#; 
3n2K1/1R6/2pNp1N1/2pkP1p1/4p1qP/bpp1Bp2/2P4n/8 w - - acd 999; bm Nc8; ce 32752; c7 "No. 288450 (id: P1236922) Karbowiak, Uwe source 1: Rochade Europa, No. 2800, 11/2010 stipulation: #8 solution: 1.Se7+? Kxe5 2.Sc4+ Kf6 3.Lxg5+ Dxg5!; 1.Sc8! Kc4 2.Txb3 Lb4 3.Sd6+ Kd5 4.Tb1 f2  5.Td1+ Dxd1 6.Se7+ Kxe5 7.Sc4+ Kf6 8.Lxg5#"; dm 8; pm Nc8; pv Nc8 Kc4 Rxb3 Bb4 Nd6+ Kd5 Rb1 f2 Rd1+ Qxd1 Ne7+ Kxe5 Nc4+ Kf6 Bxg5#; 
3n2K1/5pbB/7k/7p/4N1pp/B2p4/4bp2/7r w - - acd 999; bm Bb4; ce 32754; c7 "comment: (MZ860)"; dm 7; pm Bb4; pv Bb4 Rd1 Bc5 f1=N Be7 f6 Bd6 Ne6 Bf4+ Ng5 Nd6 h3 Nf5#; 
3N3K/2Bnp3/8/3k4/1P5R/3p1P1p/1p1PP1p1/6Nq w - - acd 999; bm e3; ce 32752; c7 "No. 306834 (id: P1385362) Jarmonow, Igor P. source 1: Problemist Ukrainy, No. C341, 10-12/2020 stipulation: #8 solution: 1.e2-e4+? Kd5-c4!/Kd5-d4! 1.e2-e3! droht 2.Th4-d4# 1....e7-e5 2.Sg1-e2! droht 3.Se2-c3# 2....b2-b1=S 3.Th4-e4! droht 4.Se2-f4+ e5xf4 5.Te4-d4# 3....Dh1-h2 4.Se2-c3+ Sb1xc3 5.d2xc3 Sd7-b6 6.c3-c4+ Sb6xc4 7.Te4-d4+ e5xd4 8.e3-e4#"; dm 8; pm e3; pv e3 e5 Ne2 b1=N Re4 Qh2 Nc3+ Nxc3 dxc3 Nb6 c4+ Nxc4 Rd4+ exd4 e4#; 
3nBBK1/3PRPP1/4P1n1/4N1kr/3PPp2/5P2/8/6b1 b - - acd 43; bm Nxe5; ce 32738; dm 15; pm Nxe5; pv Nxe5 dxe5 Kh6 Kh8 Kg6+ Kg8 Rxe5 Kh8 Rh5+ Kg8 Bd4 e5 Rxe5 Kh8 Re3 Kg8 Rxf3 Kh8 Rd3 Kg8 f3 Kh8 f2 Kg8 f1=Q Kh8 Qh1+ Kg8 Qh7+; 
3q1q2/1PNkPqPR/1Q1q1b1K/1R1q1q1Q/1Q1n1n1P/1NPqRqBB/2q3b1/1r5r w - - acd 21; bm Q4xd6+; ce 32748; dm 10; pm Q4xd6+; pv Q4xd6+ Qxd6 exf8=N+ Q8xf8 Nc5+ Qxc5 Qxf7+ Qxf7 b8=N+ Kc8 Rh8+ Qff8 gxf8=Q+ Qxf8+ Rxf8+ Bd8 Rxd8+ Kxd8 Re8#; 
3r3r/1bk2p2/1p2p3/NpP1qPp1/PP4p1/1N1BP3/4Q1P1/2R2RK1 b - - acd 45; bm g3; ce 32734; dm 17; pm g3; pv g3 cxb6+ Kb8 Nc6+ Bxc6 f6 Rh2 Rxc6 Rdh8 Rc8+ Kxc8 Rc1+ Kb8 Rc8+ Rxc8 Qd2 Qd5 e4 Qxb3 Bc2 Qc3 Qd6+ Ka8 b7+ Kxb7 Qd7+ Ka8 Qxc8+ Qxc8 a5 Qxc2 e5 Qxg2+; 
3R4/4K1b1/8/N1n1k3/n1R1pp2/2P3P1/2N1p1P1/q7 w - - acd 999; bm Rd5+; ce 32750; c0 "Zadachy i Etyudy#4039; 2011.09.21; Zamyatin=I; (+3238.33e7e5); 1-0"; c7 "Zadachy i Etyudy#4039;2011.09.21;W:Zamyatin=I;(+3238.33e7e5);1-0;2011.09.21"; c9 "HHdbVI.0208578.001a.09015"; dm 9; pm Rd5+; pv Rd5+ Kxd5 Rd4+ Bxd4 Nb4+ Ke5 g4 f3 g3 e3 Nc4+ Ke4 Nd6+ Ke5 c4 f2 Nc6#; 
4K2k/6pp/2p1N3/R6R/1p4n1/1B1p1qpp/7p/8 w - - acd 66; bm Ra8; ce 32732; c0 "sp.p. JT75 M. Garcia sec A1 Win; 2023; Vladislav Tarasiuk; 1-0; 2023."; dm 18; pm Ra8; pv Ra8 Nf6+ Ke7+ Ng8+ Rxg8+ Kxg8 Nf4+ Qd5 Nxd5 cxd5 Rxd5 h6 Rxd3+ Kh7 Bc2 h5 Rxg3+ g6 Rxh3 Kg7 Rxh2 b3 Bd3 b2 Rg2 g5 Rxg5+ Kh6 Kf6 b1=Q Bxb1 h4 Bg6 h3 Rh5+; 
4Kbr1/4p1p1/4P1Pp/7P/3np3/p1p1k1P1/p1p3P1/N1N1B3 w - - acd 70; bm Kd7; ce 32742; dm 13; pm Kd7; pv Kd7 Rh8 Kc8 Rg8 Kb7 Rh8 Ka6 Rg8 Kb6 Rh8 Kb7 Rg8 Kc8 Rh8 Kd7 Rg8 Ke8 Rh8 Kf7 Rh7 Kg8 Rh8+ Kxh8 Ne2 Nxc2+; 
4N3/1p5p/1P3p1k/qp2pK2/1b4P1/4pPP1/2R3P1/8 w - - acd 999; bm Rc1; ce 32750; c7 "No. 300669 (id: P1336697) Schulze, Eberhard source 1: Schach, No. 18554, 04/2017 stipulation: #9 solution: 1.Kxf6? Dxb6+! 1.Tc6? bxc6 2.Kxf6 Le7+!  1.Tc1! droht 2.Th1# 1....Le1 2.Tc6 droht 3.Txf6# 2....bxc6 3.Kxf6 droht 4.g5+ Kh5 5.Sg7# 3....Lxg3 4.g5+ Kh5 5.Sg7+ Kh4 6.Sf5+ Kh5 7.Sxg3+ Kh4 8.Sf5+ Kh5 9.g4#"; dm 9; pm Rc1; pv Rc1 Be1 Rc6 bxc6 Kxf6 Bxg3 g5+ Kh5 Ng7+ Kh4 Nf5+ Kh5 Nxg3+ Kh4 Nf5+ Kh5 g4#; 
4N3/5b2/2qrr1n1/2bp2Rp/Rn2k3/1P1Np1P1/1K2P3/5B2 w - - acd 85; bm Bg2+; ce 32744; dm 12; pm Bg2+; pv Bg2+ Kd4 Ne1 Qxa4 Nf3+ Ke4 Nh4+ Kd4 Nf5+ Ke5 Nfxd6+ Kd4 Nf5+ Ke5 Nh4+ Kd4 Nf3+ Ke4 Ne1+ Kd4 Nc2+ Nxc2 Rxd5+; 
4R3/1pKB1ppr/8/2pk3p/2p1p3/b1P3N1/r4Pp1/3bn3 w - - acd 999; bm Bc8; ce 32754; dm 7; pm Bc8; pv Bc8 Rb2 Nf5 Nc2 Ne7+ Ke5 Nd5+ Kxd5 f4 exf3ep Bf5 h4 Be4#; 
4R3/1pKB1ppr/8/2pk3p/2p1p3/b1P3N1/r4Pp1/n2b4 w - - acd 999; bm Bc8; ce 32754; c7 "No. 297508 (id: P1313727) Rusinek, Jan source 1: Schach-Echo, No. 10744, 05/1983 source 2: Szachy, No. IV, 06/1986 source 3: Problemista, No. 2791, 04-06/1987 source 4: Problemista, No. 2848, 07-09/1987 source 5: Die Schwalbe, No. 3, 12/1985 stipulation: #7 solution: 1.Lf5? Lf3! 1.Sf5? Lc1!  1.Lc8! Tb2 2.Sf5 Sc2 3.Se7+ Ke5 4.Sd5+ Kxd5 5.f4 exf3ep 6.Lf5 ...7.Le4# award: 2.Preis Informalturnier Mehrz uger  9.Platz Polnisches Championat 1971-1985"; dm 7; pm Bc8; pv Bc8 Rb2 Nf5 Nc2 Ne7+ Ke5 Nd5+ Kxd5 f4 exf3ep Bf5 h4 Be4#; 
4R3/n2BP2p/3B2P1/2P2R2/1P2N1P1/3P3n/brpK1p1r/bkN1Q3 b - - acd 51; bm f1=N+; ce 32742; dm 13; pm f1=N+; pv f1=N+ Kc3 Rb3+ Kc4 Rc3+ Kd4 Rc4+ Kd5 Rd4+ Ke5 Rd5+ Ke6 Re5+ Kf6 Re6+ Kf7 Rf6+ Kg7 Rf7+ Kg8 Rg7+ Kh8 Rg8+ Kxh7 Ng5+; 
5b1r/1K1p4/1B1P1p2/pkN5/p5R1/p1pPp1N1/2br4/8 w - - acd 93; bm Ne2; ce 32744; dm 12; pm Ne2; pv Ne2 Rxe2 Ne4 Kb4 Nd2+ Kb5 Nc4 Kb4 Nxa5+ Kb5 Nc4 Kb4 Nd2+ Kb5 Ne4 Kb4 Nc5+ Kb5 Na6 Bxd6 Rb4+ Bxb4 Nc7+; 
5B2/1p1n4/6p1/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - acd 77; bm Re3; ce 32726; c9 "HHdbVI.0192163.002a.08288"; dm 21; pm Re3; pv Re3 d3+ exd3 Qa4+ Kc1 Qb3 Bg7+ Bc3 Bxc3+ Qxc3+ Qc2 Qa3+ Kd1 Nc5 Rf3 Ne4 Qc1+ Qxc1+ Kxc1 Nd2 Rf4 g5 Rg4 b6 d4 Nb3+ Kc2 Nd2 Rg1+ Nb1 d5 g4 Rg2 g3 Kb3 Na3 d6 Nc2 Rg1+ Ne1 Rxe1+; 
5B2/rbp2K2/q2PR3/rp2p1k1/Bn4P1/n1P2p1p/5P1N/b1N5 w - - acd 64; bm Bh6+; ce 32742; dm 13; pm Bh6+; pv Bh6+ Kh4 Bg7 Kg5 Rxe5+ Kf4 Rf5+ Ke4 Bc2+ Naxc2 Re5+ Kf4 Ne2+ fxe2 Re6 Kg5 Bh6+ Kh4 Bf4 Qxd6 Rh6+ Qxh6 Bg3+ Kg5 f4+; 
5bbq/ppp1prnr/4Ppkn/5p2/5PP1/6N1/8/1K5Q w - - acd 998; bm Qh5+; ce 32732; dm 18; pm Qh5+; pv Qh5+ Nxh5 gxh5+ Kg7 Kc1 c6 Kc2 c5 Kc3 b5 Kc2 c4 Kc3 a5 Kc2 b4 Kb2 c3+ Kb3 a4+ Kc2 a3 Kb3 c2 Kxc2 a2 Kb2 b3 Ka1 b2+ Kxa2 b1Q+ Kxb1 Ng4 Nxf5+; 
5k2/2p4p/7q/4BKNB/7p/p3p2P/P1P1P3/8 w - - acd 83; bm Bg7+; ce 32722; c9 "HHdbVI.1261343.002a.64108"; dm 23; pm Bg7+; pv Bg7+ Kxg7 Ne6+ Kg8 Be8 Kh8 c4 c5 Bf7 Qg7 Nxg7 Kxg7 Ke6 Kf8 Kf6 h5 Ke6 Kg7 Bxh5 Kh6 Bg4 Kg7 Kd5 Kf6 Kxc5 Ke7 Kd5 Kf6 c5 Ke7 c6 Kd8 Kd6 Ke8 c7 Kf7 c8=Q Kg7 Qe8 Kh7 Qf7+ Kh8 Qf8+ Kh7 Bf5+; 
5n1B/n1p5/P1P2p1N/1p4Nb/1K1P2PR/3rp2Q/2k2PBR/2b5 b - - acd 64; bm Ba3+; ce 32742; dm 13; pm Ba3+; pv Ba3+ Ka5 Bb2 Kb4 Rxd4+ Kc5 Rc4+ Kd5 Bf7+ Nhxf7 Rd4+ Kc5 Nd7+ cxd7 Rd3 Kb4 Ba3+ Ka5 Bc5 Qxe3 Ra3+ Qxa3 Bb6+ Kb4 c5+; 
5n2/p3p2p/P5P1/1K1PP1P1/1p4p1/1kp1Q1P1/prr5/qb1B4 w - - acd 37; bm Qb6; ce 32732; c9 "HHdbVI.0223303.005a.09614"; dm 18; pm Qb6; pv Qb6 axb6 a7 Ne6 dxe6 hxg6 a8N Ka3 Nxb6 Kb3 Nd5 Ka3 Ne3 Kb3 Nxg4 Ka3 Ne3 Kb3 Nd5 Ka3 Nb6 Kb3 Ka6 Ka3 Ka5 Kb3; 
5n2/p3p2p/P5P1/1K1PP1P1/1pp3p1/1k4P1/prr5/qbQB4 w - - acd 69; bm Qe3+; ce 32730; c9 "HHdbVI.0223301.004a.09614"; dm 19; pm Qe3+; pv Qe3+ c3 Qb6 axb6 a7 Ne6 dxe6 hxg6 a8=N Ka3 Nxb6 Kb3 Nd5 Ka3 Ne3 Kb3 Nxg4 Ka3 Ne3 Kb3 Nd5 Ka3 Nb6 Kb3 Ka6 Ka3 Ka5 Kb3 Kb5 Ka3 Nc4+ Kb3 Na5+ Ka3 g4 Rd2 Nc4+; 
5Q2/3qq3/2kqNq2/1qqNRNn1/1qNRPKPn/2qQBbrP/3qQrP1/4bB2 w - - acd 41; bm Qa8+; ce 32742; dm 13; pm Qa8+; pv Qa8+ Qdb7 Nxe7+ Qdxe7 Na5+ Q5xa5 Rxc5+ Qcxc5 Qda6+ Qab6 Q6xb7+ Qbxb7 Qea6+ Qcb6 Rc4+ Qxc4 Qxb6+ Kd7 Qbxb7+ Qc7+ Qxc7+ Kxe6 Bc4+ Qd5 Bxd5+; 
5r2/1bb1Npkp/r3n1p1/3N3P/3n4/q3QP2/p3BKP1/1R5R w - - acd 42; bm Qh6+; ce 32744; dm 12; pm Qh6+; pv Qh6+ Kxh6 hxg6+ Bh2 Rxh2+ Kg5 Rh5+ Kxh5 f4+ Qf3+ Bxf3+ Nxf3 Rh1+ Nh2 Nf6+ Kh6 Rxh2+ Kg7 Ne8+ Rxe8 Rxh7+ Kf6 Rxf7+; 
6B1/n1pp4/6PR/1N2pP1R/PNKb2PB/2Pn2PP/P1b4k/1r6 b - - acd 70; bm Rxb4+; ce 32742; dm 13; pm Rxb4+; pv Rxb4+ cxb4 Nb2+ Kd5 Nxb5 axb5 Nd1 Bg5 Nc3+ Kc4 Na4 g7 Nb2+ Kd5 Bd1 Ke4 Kg2 f6 Bc2+ Kd5 Na4 f7 Nc3+ Kc4 d5+; 

Code: Select all

2n5/3N1p2/p2pPP1n/p1p4P/PkP5/1P1p2N1/KP1p1rbp/3B4 w - - bm e7; 
2N5/p4P2/p4RqP/P2krb2/5RNK/2PPB1P1/3P1pP1/4nQ2 b - - bm Nf3+; 
2N5/p7/q1p2p2/kp6/3P4/PP3K2/5P2/2B5 w - - bm Bd2+; 
2r1n1nK/q1pp2pp/p6r/3BPN1p/8/3Np1P1/1pR1P2B/5k2 w - - bm Nh4; 
2R2Nn1/brp1k1K1/3pPp1p/4p1p1/2Nr4/3n4/2p2p2/3B4 w - - bm Ne3; 
2R5/3pqNp1/4pp1p/1pp4k/5P1P/1B5K/8/8 w - - bm Re8; 
2R5/kp6/2p1BK2/p1P5/8/P1p2bB1/2q5/8 w - - bm Bb8+; 
3b1n1n/1p3P1P/1p1K1P1P/3PN3/p7/Pp1p4/1P1P4/1RBk4 b - - bm Ke2; 
3K3k/b1ppP1pB/r1r1p3/6pb/1n4N1/qpp2p2/QRR5/8 w - - bm Bg6; 
3K4/2P5/3p4/1p1kp3/1P1pp3/1P2Pp2/p3P2b/1N6 w - - bm Nc3+; 
3n1k2/5B2/R7/R2PK3/1NP2P1n/3PP1P1/pppppppp/8 w - - bm Kf6; 
3N2bK/6rp/R3p1B1/N1k1P2n/2Pn1pp1/2Bp2rq/4pP1b/8 w - - bm Ndc6; 
3n2K1/1R6/2pNp1N1/2pkP1p1/4p1qP/bpp1Bp2/2P4n/8 w - - bm Nc8; 
3n2K1/5pbB/7k/7p/4N1pp/B2p4/4bp2/7r w - - bm Bb4; 
3N3K/2Bnp3/8/3k4/1P5R/3p1P1p/1p1PP1p1/6Nq w - - bm e3; 
3nBBK1/3PRPP1/4P1n1/4N1kr/3PPp2/5P2/8/6b1 b - - bm Nxe5; 
3q1q2/1PNkPqPR/1Q1q1b1K/1R1q1q1Q/1Q1n1n1P/1NPqRqBB/2q3b1/1r5r w - - bm Q4xd6+; 
3r3r/1bk2p2/1p2p3/NpP1qPp1/PP4p1/1N1BP3/4Q1P1/2R2RK1 b - - bm g3; 
3R4/4K1b1/8/N1n1k3/n1R1pp2/2P3P1/2N1p1P1/q7 w - - bm Rd5+; 
4K2k/6pp/2p1N3/R6R/1p4n1/1B1p1qpp/7p/8 w - - bm Ra8; 
4Kbr1/4p1p1/4P1Pp/7P/3np3/p1p1k1P1/p1p3P1/N1N1B3 w - - bm Kd7; 
4N3/1p5p/1P3p1k/qp2pK2/1b4P1/4pPP1/2R3P1/8 w - - bm Rc1; 
4N3/5b2/2qrr1n1/2bp2Rp/Rn2k3/1P1Np1P1/1K2P3/5B2 w - - bm Bg2+; 
4R3/1pKB1ppr/8/2pk3p/2p1p3/b1P3N1/r4Pp1/3bn3 w - - bm Bc8; 
4R3/1pKB1ppr/8/2pk3p/2p1p3/b1P3N1/r4Pp1/n2b4 w - - bm Bc8; 
4R3/n2BP2p/3B2P1/2P2R2/1P2N1P1/3P3n/brpK1p1r/bkN1Q3 b - - bm f1=N+; 
5b1r/1K1p4/1B1P1p2/pkN5/p5R1/p1pPp1N1/2br4/8 w - - bm Ne2; 
5B2/1p1n4/6p1/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - bm Re3; 
5B2/rbp2K2/q2PR3/rp2p1k1/Bn4P1/n1P2p1p/5P1N/b1N5 w - - bm Bh6+; 
5bbq/ppp1prnr/4Ppkn/5p2/5PP1/6N1/8/1K5Q w - - bm Qh5+; 
5k2/2p4p/7q/4BKNB/7p/p3p2P/P1P1P3/8 w - - bm Bg7+; 
5n1B/n1p5/P1P2p1N/1p4Nb/1K1P2PR/3rp2Q/2k2PBR/2b5 b - - bm Ba3+; 
5n2/p3p2p/P5P1/1K1PP1P1/1p4p1/1kp1Q1P1/prr5/qb1B4 w - - bm Qb6; 
5n2/p3p2p/P5P1/1K1PP1P1/1pp3p1/1k4P1/prr5/qbQB4 w - - bm Qe3+; 
5Q2/3qq3/2kqNq2/1qqNRNn1/1qNRPKPn/2qQBbrP/3qQrP1/4bB2 w - - bm Qa8+; 
5r2/1bb1Npkp/r3n1p1/3N3P/3n4/q3QP2/p3BKP1/1R5R w - - bm Qh6+; 
6B1/n1pp4/6PR/1N2pP1R/PNKb2PB/2Pn2PP/P1b4k/1r6 b - - bm Rxb4+; 
I expect to roughly double the number presented so far. So roughly 120 in total.
With more effort, I could expand that quite a bit, but I expect it will take a while to work the bugs out of the seul set.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Uri Blass
Posts: 10704
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: test positions when all the moves losing except a winning move

Post by Uri Blass »

First positions seem to be not good test positions because it is too easy to find the right move or there is nothing good and everything is losing.

2n5/3N1p2/p2pPP1n/p1p4P/PkP5/1P1p2N1/KP1p1rbp/3B4 w - - acd 999; bm e7

chest see mate in 9 in few seconds
Other alternatives are losing except maybe Nb8 Bb7 e7 that is probably also losing against Re2 but I did not find a mate score against white.
[d]1Nn5/1b2Pp2/p2p1P1n/p1p4P/PkP5/1P1p2N1/KP1pr2p/3B4 w - - 1 3

2N5/p4P2/p4RqP/P2krb2/5RNK/2PPB1P1/3P1pP1/4nQ2 b - - acd 93; bm Nf3+

stockfish can see mate in 46 against itself in 1 second and it is verified by chest in defender mode.

It is position when everything is losing so not a good test position.

2N5/p7/q1p2p2/kp6/3P4/PP3K2/5P2/2B5 w - - acd 61; bm Bd2+

Not a good test position(too easy to find Bd2+ not with a winning score)
The main problem is to find 4.Ba5+ after 1.Bd2+ b4 2.Bxb4+ Kb5 3.Nd6+ Kb6
[d]8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - 3 4 bm Ba5+

stockfish not with multi-pv does not seem to see it in a reasonable time and it seems it does too much pruning(maybe better to avoid null move pruning when the score is bad)


FEN: 8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - 3 4

Stockfish_25011220_x64_avx2:
Available processors: 0-7
Using 6 threads
info string NNUE evaluation using nn-1c0000000000.nnue (133MiB, (22528, 3072, 15, 32, 1))
info string NNUE evaluation using nn-37f18f62d772.nnue (6MiB, (22528, 128, 15, 32, 1))
1/4 00:00 174 87k +4.89 Nd6-c4+ Qa6xc4 b3xc4
2/7 00:00 1k 598k -1.80 Nd6-c4+ Kb6-c7
3/3 00:00 2k 864k -0.78 Nd6-c4+ Kb6-b5
4/3 00:00 2k 888k -0.78 Nd6-c4+ Kb6-b5
5/5 00:00 2k 924k 0.00 Nd6-c4+ Kb6-b5 Nc4-d6+ Kb5-b6
6/6 00:00 4k 1,331k -2.06 Nd6-c4+ Kb6-b7 Bb4-e7 Kb7-a8 Be7xf6
7/20 00:00 23k 1,941k -2.17 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2
8/15 00:00 23k 1,808k -2.18 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2 Bc5xa7 Qf2-g3+ Ke5-f5
9/15 00:00 24k 1,837k -2.18 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2 Bc5xa7 Qf2-g3+ Ke5-f5
10/16 00:00 30k 1,677k -1.98 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-g3 a7-a5 Nf6-e4 Qd2-d3+ f2-f3 Qd3xb3
11/19 00:00 43k 1,807k -1.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6
12/17 00:00 46k 1,768k -1.97 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Bc5-a7 Qd3-b1 Ne4-g5+ Ke6-f6
13/19 00:00 56k 1,660k -1.87 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Bc5-a7 Qd3-f1 Ba7-c5 Qf1-c1+ Kf4-g4
14/19 00:00 112k 1,719k -1.74 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3xb3 Ng4-e5 Ke6-f6 Kf4-e4 Qb3-a2 Ke4-f4
15/19 00:00 117k 1,716k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 a7-a5 Ng4-e5 Qd3xb3 f2-f3 Ke6-f6 Kf4-e4 Qb3-c2+
16/26 00:00 247k 1,847k -1.55 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Ke6-f7 a3-a4 Qd3xb3 a4-a5 Qb3-a2 f2-f3 Kf7-g7 Kf4-g3 Kg7-g8 Kg3-f4 Qa2-f7+ Kf4-e3
17/35 00:00 302k 1,877k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Bc7-e5 Qf1-c1+
18/36 00:00 875k 2,188k -1.40 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Ne4-c5+ Ke6-f6 Nc5-e4+ Kf6-g7 a3-a4 Qf1-g1
19/32 00:00 914k 2,187k -1.44 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Ne4-c5+ Ke6-f6 Bc7-e5+ Kf6-g6 f2-f3 Qf1-e2
20/52 00:01 2,522k 2,191k -1.82 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 Qd3-f5+ Kf4-g3 a7-a5 Ng4-e5 Qf5-c2 Ne5xc6 Ke6-f5 Nc6-e7+ Kf5-g5 Ne7-d5 Qc2xb3+ Nd5-e3 Qb3-b7 f2-f4+ Kg5-g6 Kg3-f2
21/50 00:01 3,449k 2,246k -1.55 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 Qd3xb5 Kf4-e3 Qb5-b3+ Ke3-e2 Qb3-b2+ Ke2-e3 Qb2-c1+ Ke3-e2 Qc1-c4+ Ke2-e3 Qc4-f1 Bc5-b4 Qf1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-b1 Bb4-c5 Qb1-e1+ Ke3-f4 Qe1-d1 Kf4-e3 Kg6-f5
22/57 00:02 7,385k 2,475k -1.45 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 f2-f3 Qd3-d1 Ne4-d6
23/64 00:03 9,686k 2,535k -1.37 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-f1
24/59 00:04 10,376k 2,539k -1.48 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-e4
25/62 00:04 11,095k 2,565k -1.43 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5 Qg4-g2+ f2-f3 Qg2-f1
26/69 00:05 13,274k 2,555k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5
27/70 00:06 18,376k 2,662k -1.80 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5 Qg4-g2+ Kd5-e5 Qg2xf2 Nd6-c4
28/70 00:09 24,916k 2,757k -1.85 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-h6+ Kf4-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 d4-d5
29/78 00:09 26,507k 2,771k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 Ne4-d6 Qd3-d2+ Kf4-g3 Qd2-g5+ Kg3-f3 Qg5-c1 Nd6-e4 Qc1-d1+ Kf3-g3 Qd1xb3+ f2-f3 Qb3-b8+ Bc5-d6 Qb8-b1 Bd6-c5 Qb1-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-g2 Kf4-e3 Qg2-h1 Ke3-f4 Qh1-h2+ Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-g5 Nd6-e4+ Kg5-h4 Bc5-e7+ Kh4-h3 Ne4-g5+ Kh3-g2 Ke3-e4
30/68 00:09 27,162k 2,781k -1.77 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-d5 Qf2-g2+ Kd5-e6 Kg6-h5 Ke6-d7 Qg2-d5 Kd7-c7 b5-b4 Bc5xb4 Qd5xd4 Kc7-c6 Kh5-g5 Nd6-c8 Qd4-c4+ Bb4-c5 Qc4-e6+ Kc6-c7 Qe6-d5 Bc5-d6 Qd5-c4+ Kc7-d7 Qc4-b5+ Kd7-c7 Kg5-f5
31/83 00:11 33,839k 2,929k -1.39 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-d5 Qf2-f3+ Kd5-e5 Qf3-b3 Ke5-e4
32/76 00:12 37,757k 2,965k -1.70 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4-a7+ Kd7-c6 Qa7xf2 Kc6-d7
33/84 00:16 49,519k 3,009k -1.82 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 f2-f3 Qd3-d1 Ne4-d6 Qd1-e2 Nd6-e4 Qe2-d3 Kf4-e5 Qd3xf3 Ne4-d6 Qf3-e2+ Ke5-d5 Qe2-g2+ Kd5-e6 Qg2-c2
34/74 00:19 57,035k 2,980k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-g3 Kg6-f5 Ne4-d6+ Kf5-f6 Kg3-f4 Qd1-d2+ Kf4-g3 Qd2-d3 Nd6-e4+ Kf6-e6 b4-b5 c6xb5 Kg3-g4 Ke6-d5 Kg4-g3 Qd3-b3 Kg3-f4 b5-b4 Bc5xb4 Kd5xd4 Bb4-c5+ Kd4-c4 Kf4-e5 Qb3-d3 Ke5-f4 Qd3-e2 Bc5-b4 Kc4-d3 Kf4-g4 Qe2-c2 Bb4-c5 Qc2-c4 Kg4-f4 Qc4-d5 Bc5-b4 Qd5-f7+ Kf4-g4 Qf7-c7 Bb4-c5 Qc7-e5 Bc5-b4 Kd3-e2 Ne4-g3+ Ke2-e3 Ng3-f5+ Ke3-d3 Kg4-g5
35/84 00:19 57,733k 2,979k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-g3 Kg6-f5 Ne4-d6+ Kf5-f6 Kg3-f4 Qd1-d2+ Kf4-g3 Qd2-d3 Nd6-e4+ Kf6-e6 b4-b5 c6xb5 Kg3-f4 Qd3-c2 Kf4-e3 Qc2-b2 f3-f4
36/87 00:22 66,819k 2,989k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-e5 Qd1xf3 b4-b5 Qf3-f5+ Ke5-d6 c6xb5 Ne4-c3 Qf5-f4+ Kd6-d7 Qf4-g4+ Kd7-c6 Qg4-f3+ Nc3-d5 Kg6-f7 Kc6-d6 Qf3-g3+ Kd6-d7 Qg3-h3+ Kd7-d8 b5-b4 Bc5-d6
37/88 00:27 83,393k 2,998k -1.98 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-e4+ Kc6-c5 Kg6-f6 Nb5-c7 Kf6-e7 Nc7-d5+ Ke7-e6 Nd5-b6 Qe4-c2+ Kc5-b5 Qc2-e2+ Kb5-c5 Qe2-e4 Kc5-b5 Ke6-f7 Kb5-c5 Qe4-e7+ Kc5-c4
38/86 00:28 85,873k 2,996k -1.97 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-b6 Qf3-e3+ Kb6-c6 Qe3-f4
39/93 00:29 90,479k 3,020k -1.93 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-d6 Qf3-d3+ Kd6-c6 Qd3-e4+ Kc6-b6 Qe4-e6+ Kb6-c5 Kg6-f7 Nb5-c7 Qe6-e4 Nc7-d5 Qe4-c2+ Kc5-d6 Qc2-g6+ Kd6-d7
40/94 00:31 96,363k 3,018k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-d6 Qf3-d3+ Kd6-c6 Qd3-e4+ Kc6-b6 Qe4-e8
41/94 00:40 124,426k 3,056k -2.00 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Bc5-b4 Kg6-f5 f2-f3 Qd5-b3+ Ke3-e2 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-f2 Kf5-e6 Ne4-c3 Qc1-d2+ Nc3-e2 Qd2-c2 Kf2-e3 Qc2-c6 Bb4-e1
42/94 00:44 134,888k 3,041k -2.04 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 d4-d5 Qh3-h8+ Ke5-d6 Qh8-b8+ Kd6-d7 Qb8-e5 Ne4-d6 Qe5xd5 Bc5-b4 Qd5-d4 f2-f4 Qd4xf4 Nd6xb5 Qf4-f5+ Kd7-c6 Qf5-e4+ Kc6-b6 Qe4-e6+ Kb6-c5 Kg6-f7 Nb5-c7 Qe6-e4 Nc7-d5 Kf7-e6
43/102- 00:53 164,480k 3,082k -2.12 Bb4-c5+ Kb6-c7
43/102 00:54 167,276k 3,089k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h4+ Kf4-e5 Qh4-h8+ Ke5-f4 Qh8-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h4 Kf3-e3 Qh4-g4 Ne4-d6 Qg4-g1 Ke3-f4 Qg1-e1 Nd6-e4 Qe1-h1 Kf4-e3
44/101 00:54 170,343k 3,098k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-b1
45/95 00:56 175,094k 3,114k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Kf4-e5 Qh1-h2+ f2-f4 Qh2-h8+ Ke5-d5 Qh8-a8+ Kd5-e5 Qa8-a5
46/104 00:58 183,362k 3,131k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-d1+ Kg4-f4 Kg6-f7 Kf4-e5 Qd1-h5+ Ke5-d6 Qh5-g6+ Kd6-e5 Qg6-e6+ Ke5-f4 Kf7-g6 Ne4-d6 Qe6-e1 Nd6-c4
47/114- 01:20 252,067k 3,138k -2.26 Bb4-c5+ Kb6-c7
47/114 01:26 270,824k 3,145k -2.27 Bb4-c5+ Kb6-c7 Nd6-e4 Qa6-d3+ Kf3-f4 Kc7-d7 Ne4xf6+ Kd7-e6 Nf6-e4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Ne4-d6 Qh3-h2+ Kf4-e3 Qh2-g1 Ke3-f4 Qg1xf2+ Kf4-e5 Qf2-e1+ Ke5-d5 Qe1-h1+ Kd5-e6 Qh1-f3 Ke6-e5 Qf3-f2 Ke5-d5 Qf2-g2+ Kd5-e5 Qg2-a2 Nd6-e4
48/102 01:51 349,021k 3,127k -2.38 Bb4-c5+ Kb6-c7 Nd6-e4 Qa6-d3+ Kf3-f4 Kc7-d7 Ne4xf6+ Kd7-e6 Nf6-e4 a7-a5 f2-f3 Qd3xb3 Bc5-b4 Qb3-b2 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-f7 Bb4xa5 Qb2xd4 Ba5-c3 Qd4-g1 Kf4-e5 Qg1-h2+ Ke5-d4 Kf7-e8 Kd4-e3 Qh2-g1+ Ke3-e2 Qg1-g2+ Ke2-e3 c6-c5 a3-a4 Qg2-g1+ Ke3-e2 Ke8-d7 a4-a5 Qg1-g2+ Ke2-e3 Kd7-c6 Bc3-d2 Kc6-d5 Ke3-f4 Qg2-g7 Bd2-e1 Kd5-c6 a5-a6
49/106 02:21 434,414k 3,060k -2.41 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-e4+ Kc6-d6 Kg6-f7 Nb5-c3 Qe4-e6+ Kd6-c5 Kf7-f6 Nc3-b5 Qe6-e4 Kc5-d6 Qe4-d3+ Kd6-c5 Kf6-e5 Bb4-c3+ Ke5-e6 Nb5-d4+ Ke6-d7 Bc3-b4 Qd3-e4 Kc5-c4 Qe4-a8 Bb4-c5 Qa8-c8 Kc4-d5
50/104 02:27 452,385k 3,071k -2.41 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f3 Kg6-f5 Ne4-d6+ Kf5-e6 Kf3-e2 Qg1-b1 f2-f3 Qb1-b3 Nd6-e4 Qb3-a2+
51/111 02:35 480,604k 3,087k -2.46 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Bc5-b4 Qh3-h4+ Kf4-e3 Qh4-h6+ Ke3-e2 Qh6-f4 f2-f3 Qf4-h2+ Ke2-d3 Qh2-g2 Ne4-d2
52/114 03:04 576,294k 3,129k -2.56 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-h3 Bc5-b4 Qh3-h2+ Kf4-e3 Qh2-h6+ Ke3-e2 Qh6-f4 f2-f3 Qf4-h2+ Ne4-f2 Kg6-f5 Bb4-c5 Qh2-g2 Ke2-e3 Qg2-g1 Ke3-e2 Kf5-e6 Nf2-g4 Qg1-c1 Ng4-f2 Qc1-c4+ Ke2-e3 Ke6-d5
53/117 03:14 615,656k 3,159k -2.56 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Ne4-d6 Qh3-h2+ Kf4-f3 Qh2-g1 Nd6-e4 Kg6-f5 Ne4-d6+ Kf5-f6 Nd6-e4+ Kf6-e6 d4-d5+
54/120 03:53 737,706k 3,160k -2.68 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h3+ Kf3-e2 Qh3-b3 Bc5-b4 Kg6-f5 f2-f3 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-e2 Qc1-c4+ Ke2-e1
55/121 04:47 900,495k 3,129k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Bc5-d6 Kf5-e6 Bd6-b4 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-d3 Qg1-f1+ Kd3-e3 Qf1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-h2 Ne4-d2
56/120 05:04 957,731k 3,140k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Ne4-c3 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-e2 Qg1-c1 Bc5-b4 Qc1-h6 Bb4-c5 Kf5-f4 Ke2-e1
57/123 05:35 1,065,379k 3,176k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Ne4-c3 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-e2 Kf5-f4 Bc5-d6+ Kf4-g5 Nc3-e4+ Kg5-f5 Ke2-d3 Qg1-g8
58/131 05:37 1,072,024k 3,175k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-g2 Ne4-d6 Qg2xf2+ Kf4-e5 Qf2-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3-b3 Nd6-f5 Qb3-h3 Nf5-d6 Qh3-g2 Nd6-c4
59/128 05:42 1,090,454k 3,183k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Ne4-d6 Qh1-h2+ Kf4-e4 Qh2xf2 Ke4-e5 Qf2-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3-b3 Nd6-f5 Qb3-h3 Nf5-d6 Qh3-g2
60/132 05:52 1,124,911k 3,192k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Kf4-e3 Qh1-c1+ Ke3-e2 Qc1-c4+ Ke2-e3 Qc4-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-g4 Qh2-g2+ Kg4-f4 Qg2-a2 Bc5-d6
61/141- 09:16 1,741,073k 3,126k -3.01 Bb4-c5+ Kb6-c7
61/141 09:35 1,810,537k 3,147k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-e6 Nd6-e4 Qd1-b3+ Ke3-e2 Ke6-f5 Bc5-b4 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-f2 Kf5-e6 Kf2-e2 Qc1-f4 Ne4-f6
62/128 09:48 1,854,838k 3,151k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 Ne4-d6 Qh3-h2+ Kf4-e3 Qh2-g1 Nd6-e4 Kg6-f5 Ne4-d6+ Kf5-e6 Ke3-e2 Qg1-b1 f2-f3 Qb1-a2+ Ke2-e3 Qa2-d5 Nd6-e4 Qd5-b3+ Ke3-f4 Qb3-d3 Ne4-d6 Qd3-d2+ Kf4-e4 Qd2-e2+ Ke4-f4 Qe2-b2
63/130 10:01 1,899,111k 3,157k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-e6 Nd6-e4 Qd1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-a1 Ke3-e2 Qa1-h1 Ne4-c3 Qh1-g2+ Ke2-e3 Qg2-f1 Nc3-e2 Ke6-d5 Ne2-g3 Qf1-a1 Bc5-e7
64/133 10:24 1,975,433k 3,165k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-e2 Qg1-c1 Bc5-b4 Kg6-f5 Ne4-c3 Qc1-h6 Bb4-c5 Qh6-h2+ Ke2-e3 Qh2-g1+ Ke3-e2 Qg1-g2+ Ke2-e3 Qg2-g8 Ke3-f2 Qg8-c4 Nc3-e2 Qc4-b3 Bc5-b4 Qb3-d3 Ne2-g3+ Kf5-e6 Bb4-a5
65/143 11:18 2,168,192k 3,194k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Ne4-d6 Qd1-e2 Nd6-e4 Qe2-a2 Ne4-d6 Qa2-b3 Nd6-e4 Qb3-d3 Kf4-e5 Qd3xf3 Ne4-d6 Qf3-h5+ Ke5-e6 Qh5-h3+ Ke6-d5 Qh3-h1+ Kd5-e6 Qh1-g2 Ke6-d7 Qg2-a2
66/150+ 21:49 3,976,050k 3,036k -2.73 Bb4-a5+
66/150+ 21:52 3,984,007k 3,036k -2.45 Bb4-a5+
66/150+ 22:54 4,313,871k 3,138k +4.81 Bb4-a5+



Stockfish_25011220_x64_avx2:
Available processors: 0-7
Using 6 threads
info string NNUE evaluation using nn-1c0000000000.nnue (133MiB, (22528, 3072, 15, 32, 1))
info string NNUE evaluation using nn-37f18f62d772.nnue (6MiB, (22528, 128, 15, 32, 1))
1/4 00:00 174 87k +4.89 Nd6-c4+ Qa6xc4 b3xc4
2/7 00:00 1k 598k -1.80 Nd6-c4+ Kb6-c7
3/3 00:00 2k 864k -0.78 Nd6-c4+ Kb6-b5
4/3 00:00 2k 888k -0.78 Nd6-c4+ Kb6-b5
5/5 00:00 2k 924k 0.00 Nd6-c4+ Kb6-b5 Nc4-d6+ Kb5-b6
6/6 00:00 4k 1,331k -2.06 Nd6-c4+ Kb6-b7 Bb4-e7 Kb7-a8 Be7xf6
7/20 00:00 23k 1,941k -2.17 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2
8/15 00:00 23k 1,808k -2.18 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2 Bc5xa7 Qf2-g3+ Ke5-f5
9/15 00:00 24k 1,837k -2.18 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-e5 Qd2xf2 Bc5xa7 Qf2-g3+ Ke5-f5
10/16 00:00 30k 1,677k -1.98 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d8 Ne8xf6 Qa6-d3+ Kf3-f4 Qd3-d2+ Kf4-g3 a7-a5 Nf6-e4 Qd2-d3+ f2-f3 Qd3xb3
11/19 00:00 43k 1,807k -1.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6
12/17 00:00 46k 1,768k -1.97 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Bc5-a7 Qd3-b1 Ne4-g5+ Ke6-f6
13/19 00:00 56k 1,660k -1.87 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Bc5-a7 Qd3-f1 Ba7-c5 Qf1-c1+ Kf4-g4
14/19 00:00 112k 1,719k -1.74 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3xb3 Ng4-e5 Ke6-f6 Kf4-e4 Qb3-a2 Ke4-f4
15/19 00:00 117k 1,716k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 a7-a5 Ng4-e5 Qd3xb3 f2-f3 Ke6-f6 Kf4-e4 Qb3-c2+
16/26 00:00 247k 1,847k -1.55 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Ke6-f7 a3-a4 Qd3xb3 a4-a5 Qb3-a2 f2-f3 Kf7-g7 Kf4-g3 Kg7-g8 Kg3-f4 Qa2-f7+ Kf4-e3
17/35 00:00 302k 1,877k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Bc7-e5 Qf1-c1+
18/36 00:00 875k 2,188k -1.40 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Ne4-c5+ Ke6-f6 Nc5-e4+ Kf6-g7 a3-a4 Qf1-g1
19/32 00:00 914k 2,187k -1.44 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a6 Bc5-b6 Qd3-b5 Bb6-c7 Qb5-f1 Ne4-c5+ Ke6-f6 Bc7-e5+ Kf6-g6 f2-f3 Qf1-e2
20/52 00:01 2,522k 2,191k -1.82 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-g4 Qa6-d3+ Kf3-f4 Qd3-f5+ Kf4-g3 a7-a5 Ng4-e5 Qf5-c2 Ne5xc6 Ke6-f5 Nc6-e7+ Kf5-g5 Ne7-d5 Qc2xb3+ Nd5-e3 Qb3-b7 f2-f4+ Kg5-g6 Kg3-f2
21/50 00:01 3,449k 2,246k -1.55 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 Qd3xb5 Kf4-e3 Qb5-b3+ Ke3-e2 Qb3-b2+ Ke2-e3 Qb2-c1+ Ke3-e2 Qc1-c4+ Ke2-e3 Qc4-f1 Bc5-b4 Qf1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-b1 Bb4-c5 Qb1-e1+ Ke3-f4 Qe1-d1 Kf4-e3 Kg6-f5
22/57 00:02 7,385k 2,475k -1.45 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 f2-f3 Qd3-d1 Ne4-d6
23/64 00:03 9,686k 2,535k -1.37 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-f1
24/59 00:04 10,376k 2,539k -1.48 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-e4
25/62 00:04 11,095k 2,565k -1.43 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5 Qg4-g2+ f2-f3 Qg2-f1
26/69 00:05 13,274k 2,555k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5
27/70 00:06 18,376k 2,662k -1.80 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-d5 Qg4-g2+ Kd5-e5 Qg2xf2 Nd6-c4
28/70 00:09 24,916k 2,757k -1.85 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-h6+ Kf4-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 d4-d5
29/78 00:09 26,507k 2,771k -1.65 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 Ne4-d6 Qd3-d2+ Kf4-g3 Qd2-g5+ Kg3-f3 Qg5-c1 Nd6-e4 Qc1-d1+ Kf3-g3 Qd1xb3+ f2-f3 Qb3-b8+ Bc5-d6 Qb8-b1 Bd6-c5 Qb1-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-g2 Kf4-e3 Qg2-h1 Ke3-f4 Qh1-h2+ Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-g5 Nd6-e4+ Kg5-h4 Bc5-e7+ Kh4-h3 Ne4-g5+ Kh3-g2 Ke3-e4
30/68 00:09 27,162k 2,781k -1.77 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-d5 Qf2-g2+ Kd5-e6 Kg6-h5 Ke6-d7 Qg2-d5 Kd7-c7 b5-b4 Bc5xb4 Qd5xd4 Kc7-c6 Kh5-g5 Nd6-c8 Qd4-c4+ Bb4-c5 Qc4-e6+ Kc6-c7 Qe6-d5 Bc5-d6 Qd5-c4+ Kc7-d7 Qc4-b5+ Kd7-c7 Kg5-f5
31/83 00:11 33,839k 2,929k -1.39 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3xf2 Ke5-d5 Qf2-f3+ Kd5-e5 Qf3-b3 Ke5-e4
32/76 00:12 37,757k 2,965k -1.70 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4-a7+ Kd7-c6 Qa7xf2 Kc6-d7
33/84 00:16 49,519k 3,009k -1.82 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 f2-f3 Qd3-d1 Ne4-d6 Qd1-e2 Nd6-e4 Qe2-d3 Kf4-e5 Qd3xf3 Ne4-d6 Qf3-e2+ Ke5-d5 Qe2-g2+ Kd5-e6 Qg2-c2
34/74 00:19 57,035k 2,980k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-g3 Kg6-f5 Ne4-d6+ Kf5-f6 Kg3-f4 Qd1-d2+ Kf4-g3 Qd2-d3 Nd6-e4+ Kf6-e6 b4-b5 c6xb5 Kg3-g4 Ke6-d5 Kg4-g3 Qd3-b3 Kg3-f4 b5-b4 Bc5xb4 Kd5xd4 Bb4-c5+ Kd4-c4 Kf4-e5 Qb3-d3 Ke5-f4 Qd3-e2 Bc5-b4 Kc4-d3 Kf4-g4 Qe2-c2 Bb4-c5 Qc2-c4 Kg4-f4 Qc4-d5 Bc5-b4 Qd5-f7+ Kf4-g4 Qf7-c7 Bb4-c5 Qc7-e5 Bc5-b4 Kd3-e2 Ne4-g3+ Ke2-e3 Ng3-f5+ Ke3-d3 Kg4-g5
35/84 00:19 57,733k 2,979k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-g3 Kg6-f5 Ne4-d6+ Kf5-f6 Kg3-f4 Qd1-d2+ Kf4-g3 Qd2-d3 Nd6-e4+ Kf6-e6 b4-b5 c6xb5 Kg3-f4 Qd3-c2 Kf4-e3 Qc2-b2 f3-f4
36/87 00:22 66,819k 2,989k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 f2-f3 Qd3-d1 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 Kf4-e5 Qd1xf3 b4-b5 Qf3-f5+ Ke5-d6 c6xb5 Ne4-c3 Qf5-f4+ Kd6-d7 Qf4-g4+ Kd7-c6 Qg4-f3+ Nc3-d5 Kg6-f7 Kc6-d6 Qf3-g3+ Kd6-d7 Qg3-h3+ Kd7-d8 b5-b4 Bc5-d6
37/88 00:27 83,393k 2,998k -1.98 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-e4+ Kc6-c5 Kg6-f6 Nb5-c7 Kf6-e7 Nc7-d5+ Ke7-e6 Nd5-b6 Qe4-c2+ Kc5-b5 Qc2-e2+ Kb5-c5 Qe2-e4 Kc5-b5 Ke6-f7 Kb5-c5 Qe4-e7+ Kc5-c4
38/86 00:28 85,873k 2,996k -1.97 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-b6 Qf3-e3+ Kb6-c6 Qe3-f4
39/93 00:29 90,479k 3,020k -1.93 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-d6 Qf3-d3+ Kd6-c6 Qd3-e4+ Kc6-b6 Qe4-e6+ Kb6-c5 Kg6-f7 Nb5-c7 Qe6-e4 Nc7-d5 Qe4-c2+ Kc5-d6 Qc2-g6+ Kd6-d7
40/94 00:31 96,363k 3,018k -1.88 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-f3+ Kc6-d6 Qf3-d3+ Kd6-c6 Qd3-e4+ Kc6-b6 Qe4-e8
41/94 00:40 124,426k 3,056k -2.00 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Bc5-b4 Kg6-f5 f2-f3 Qd5-b3+ Ke3-e2 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-f2 Kf5-e6 Ne4-c3 Qc1-d2+ Nc3-e2 Qd2-c2 Kf2-e3 Qc2-c6 Bb4-e1
42/94 00:44 134,888k 3,041k -2.04 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 d4-d5 Qh3-h8+ Ke5-d6 Qh8-b8+ Kd6-d7 Qb8-e5 Ne4-d6 Qe5xd5 Bc5-b4 Qd5-d4 f2-f4 Qd4xf4 Nd6xb5 Qf4-f5+ Kd7-c6 Qf5-e4+ Kc6-b6 Qe4-e6+ Kb6-c5 Kg6-f7 Nb5-c7 Qe6-e4 Nc7-d5 Kf7-e6
43/102- 00:53 164,480k 3,082k -2.12 Bb4-c5+ Kb6-c7
43/102 00:54 167,276k 3,089k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h4+ Kf4-e5 Qh4-h8+ Ke5-f4 Qh8-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h4 Kf3-e3 Qh4-g4 Ne4-d6 Qg4-g1 Ke3-f4 Qg1-e1 Nd6-e4 Qe1-h1 Kf4-e3
44/101 00:54 170,343k 3,098k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-b1
45/95 00:56 175,094k 3,114k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h2 Ke3-f3 Qh2-h1+ Kf3-f4 Qh1-h6+ Kf4-e5 Qh6-h5+ Ke5-f4 Qh5-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Kf4-e5 Qh1-h2+ f2-f4 Qh2-h8+ Ke5-d5 Qh8-a8+ Kd5-e5 Qa8-a5
46/104 00:58 183,362k 3,131k -2.12 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-d1+ Kg4-f4 Kg6-f7 Kf4-e5 Qd1-h5+ Ke5-d6 Qh5-g6+ Kd6-e5 Qg6-e6+ Ke5-f4 Kf7-g6 Ne4-d6 Qe6-e1 Nd6-c4
47/114- 01:20 252,067k 3,138k -2.26 Bb4-c5+ Kb6-c7
47/114 01:26 270,824k 3,145k -2.27 Bb4-c5+ Kb6-c7 Nd6-e4 Qa6-d3+ Kf3-f4 Kc7-d7 Ne4xf6+ Kd7-e6 Nf6-e4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ke5-f4 Qh3-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Ne4-d6 Qh3-h2+ Kf4-e3 Qh2-g1 Ke3-f4 Qg1xf2+ Kf4-e5 Qf2-e1+ Ke5-d5 Qe1-h1+ Kd5-e6 Qh1-f3 Ke6-e5 Qf3-f2 Ke5-d5 Qf2-g2+ Kd5-e5 Qg2-a2 Nd6-e4
48/102 01:51 349,021k 3,127k -2.38 Bb4-c5+ Kb6-c7 Nd6-e4 Qa6-d3+ Kf3-f4 Kc7-d7 Ne4xf6+ Kd7-e6 Nf6-e4 a7-a5 f2-f3 Qd3xb3 Bc5-b4 Qb3-b2 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-f7 Bb4xa5 Qb2xd4 Ba5-c3 Qd4-g1 Kf4-e5 Qg1-h2+ Ke5-d4 Kf7-e8 Kd4-e3 Qh2-g1+ Ke3-e2 Qg1-g2+ Ke2-e3 c6-c5 a3-a4 Qg2-g1+ Ke3-e2 Ke8-d7 a4-a5 Qg1-g2+ Ke2-e3 Kd7-c6 Bc3-d2 Kc6-d5 Ke3-f4 Qg2-g7 Bd2-e1 Kd5-c6 a5-a6
49/106 02:21 434,414k 3,060k -2.41 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e7 b5-b4 Bc5xb4 Qg4xd4 Ke7-d7 Qd4xf2 Nd6-b5 Qf2-f5+ Kd7-c6 Qf5-e4+ Kc6-d6 Kg6-f7 Nb5-c3 Qe4-e6+ Kd6-c5 Kf7-f6 Nc3-b5 Qe6-e4 Kc5-d6 Qe4-d3+ Kd6-c5 Kf6-e5 Bb4-c3+ Ke5-e6 Nb5-d4+ Ke6-d7 Bc3-b4 Qd3-e4 Kc5-c4 Qe4-a8 Bb4-c5 Qa8-c8 Kc4-d5
50/104 02:27 452,385k 3,071k -2.41 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-c1 Kf3-g4 Qc1-g1+ Kg4-f3 Kg6-f5 Ne4-d6+ Kf5-e6 Kf3-e2 Qg1-b1 f2-f3 Qb1-b3 Nd6-e4 Qb3-a2+
51/111 02:35 480,604k 3,087k -2.46 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-h5 Kf4-e3 Qh5-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Bc5-b4 Qh3-h4+ Kf4-e3 Qh4-h6+ Ke3-e2 Qh6-f4 f2-f3 Qf4-h2+ Ke2-d3 Qh2-g2 Ne4-d2
52/114 03:04 576,294k 3,129k -2.56 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-h3 Bc5-b4 Qh3-h2+ Kf4-e3 Qh2-h6+ Ke3-e2 Qh6-f4 f2-f3 Qf4-h2+ Ne4-f2 Kg6-f5 Bb4-c5 Qh2-g2 Ke2-e3 Qg2-g1 Ke3-e2 Kf5-e6 Nf2-g4 Qg1-c1 Ng4-f2 Qc1-c4+ Ke2-e3 Ke6-d5
53/117 03:14 615,656k 3,159k -2.56 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h1+ Kf3-f4 Qh1-h3 Ne4-d6 Qh3-h2+ Kf4-f3 Qh2-g1 Nd6-e4 Kg6-f5 Ne4-d6+ Kf5-f6 Nd6-e4+ Kf6-e6 d4-d5+
54/120 03:53 737,706k 3,160k -2.68 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h8 Kf4-e3 Qh8-h6+ Ke3-f3 Qh6-h3+ Kf3-e2 Qh3-b3 Bc5-b4 Kg6-f5 f2-f3 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-e2 Qc1-c4+ Ke2-e1
55/121 04:47 900,495k 3,129k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Bc5-d6 Kf5-e6 Bd6-b4 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-d3 Qg1-f1+ Kd3-e3 Qf1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-h2 Ne4-d2
56/120 05:04 957,731k 3,140k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Ne4-c3 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-e2 Qg1-c1 Bc5-b4 Qc1-h6 Bb4-c5 Kf5-f4 Ke2-e1
57/123 05:35 1,065,379k 3,176k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-c7+ Kg3-g4 Qc7-d7+ Kg4-g3 Kg6-f5 f2-f3 Qd7-g7+ Kg3-f2 Qg7-h6 Ne4-c3 Qh6-h2+ Kf2-e3 Qh2-g1+ Ke3-e2 Kf5-f4 Bc5-d6+ Kf4-g5 Nc3-e4+ Kg5-f5 Ke2-d3 Qg1-g8
58/131 05:37 1,072,024k 3,175k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-g2 Ne4-d6 Qg2xf2+ Kf4-e5 Qf2-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3-b3 Nd6-f5 Qb3-h3 Nf5-d6 Qh3-g2 Nd6-c4
59/128 05:42 1,090,454k 3,183k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Ne4-d6 Qh1-h2+ Kf4-e4 Qh2xf2 Ke4-e5 Qf2-e2+ Ke5-d5 Qe2-f3+ Kd5-e5 Qf3-b3 Nd6-f5 Qb3-h3 Nf5-d6 Qh3-g2
60/132 05:52 1,124,911k 3,192k -2.78 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-g3 Qf7-g7 Kg3-f4 Qg7-h6+ Kf4-g3 Qh6-c1 Kg3-g4 Qc1-g1+ Kg4-f4 Qg1-h1 Kf4-e3 Qh1-c1+ Ke3-e2 Qc1-c4+ Ke2-e3 Qc4-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-g4 Qh2-g2+ Kg4-f4 Qg2-a2 Bc5-d6
61/141- 09:16 1,741,073k 3,126k -3.01 Bb4-c5+ Kb6-c7
61/141 09:35 1,810,537k 3,147k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-e6 Nd6-e4 Qd1-b3+ Ke3-e2 Ke6-f5 Bc5-b4 Qb3-c2+ Ke2-e3 Qc2-c1+ Ke3-f2 Kf5-e6 Kf2-e2 Qc1-f4 Ne4-f6
62/128 09:48 1,854,838k 3,151k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 Ne4-d6 Qh3-h2+ Kf4-e3 Qh2-g1 Nd6-e4 Kg6-f5 Ne4-d6+ Kf5-e6 Ke3-e2 Qg1-b1 f2-f3 Qb1-a2+ Ke2-e3 Qa2-d5 Nd6-e4 Qd5-b3+ Ke3-f4 Qb3-d3 Ne4-d6 Qd3-d2+ Kf4-e4 Qd2-e2+ Ke4-f4 Qe2-b2
63/130 10:01 1,899,111k 3,157k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Kf4-e3 Kg6-f5 Ne4-d6+ Kf5-e6 Nd6-e4 Qd1-c1+ Ke3-e2 Qc1-b2+ Ke2-e3 Qb2-a1 Ke3-e2 Qa1-h1 Ne4-c3 Qh1-g2+ Ke2-e3 Qg2-f1 Nc3-e2 Ke6-d5 Ne2-g3 Qf1-a1 Bc5-e7
64/133 10:24 1,975,433k 3,165k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-e2 Qg1-c1 Bc5-b4 Kg6-f5 Ne4-c3 Qc1-h6 Bb4-c5 Qh6-h2+ Ke2-e3 Qh2-g1+ Ke3-e2 Qg1-g2+ Ke2-e3 Qg2-g8 Ke3-f2 Qg8-c4 Nc3-e2 Qc4-b3 Bc5-b4 Qb3-d3 Ne2-g3+ Kf5-e6 Bb4-a5
65/143 11:18 2,168,192k 3,194k -3.01 Bb4-c5+ Kb6-c7 Nd6-e8+ Kc7-d7 Ne8xf6+ Kd7-e6 Nf6-e4 Qa6-d3+ Kf3-f4 a7-a5 Ne4-g5+ Ke6-f6 Ng5-e4+ Kf6-g6 b3-b4 a5-a4 b4-b5 c6xb5 Kf4-e5 Qd3-h3 Ne4-d6 Qh3-h5+ Ke5-e6 Qh5-g4+ Ke6-e5 Qg4-e2+ Nd6-e4 Qe2-h5+ Ke5-f4 Qh5-f5+ Kf4-e3 Qf5-d5 Ke3-f4 Qd5-f7+ Kf4-e3 Qf7-b3+ Ke3-f4 Qb3-h3 f2-f3 Qh3-h2+ Kf4-e3 Qh2-g1+ Ke3-f4 Qg1-d1 Ne4-d6 Qd1-e2 Nd6-e4 Qe2-a2 Ne4-d6 Qa2-b3 Nd6-e4 Qb3-d3 Kf4-e5 Qd3xf3 Ne4-d6 Qf3-h5+ Ke5-e6 Qh5-h3+ Ke6-d5 Qh3-h1+ Kd5-e6 Qh1-g2 Ke6-d7 Qg2-a2
66/150+ 21:49 3,976,050k 3,036k -2.73 Bb4-a5+
66/150+ 21:52 3,984,007k 3,036k -2.45 Bb4-a5+
66/150+ 22:37 4,192,792k 3,089k +2.72 Bb4-a5+
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

There are also positions where the best move is only a draw and all other moves are losing.
Some of them are pretty easy, but some chess engines will get the wrong answer. I know this because I have a database table called alternate evals and it contains the positions and evaluations of every attempt to analyze the position along with the move and score.
So I looked in this table for positions that do not have any alternative moves with scores bigger than zero.
That is on the one hand. On the other hand, some of the analysis will have been performed years ago, and today's engines will all find a good move in a fraction of a second on decent hardware.
So, this is how I have derived the positions. And the reason I did not deliver them all at once is that I am analyzing each position with the bleeding edge stockfish at one minute per position with thirty threads and mpv=3. That way I know it takes SF at least one second to find the solution and SF does not find any alternatives. Of course, given a longer time some of them will be refuted, unless all of the positions are driven to + and - checkmate values, we can never know for sure. There are a few like that.
The class of positions which is either a win for SF for a single move and otherwise a draw or worse is much larger, but perhaps less interesting especially because it is not an answer to your question. I am giving only those positions with a win for a single move and a losing score for all other moves.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

Next batch:

Code: Select all

6K1/8/1p6/p3Q2N/3p4/3r4/n5p1/3n1brk w - - acd 113; bm Kf8; ce 32656; c9 "HHdbVI.0324374.002a.14168"; dm 56; pm Kf8; pv Kf8 Rf3+ Ke7 Rf7+ Kd8 Rf8+ Kc7 Rf7+ Kxb6 Rb7+ Kxb7 Ba6+ Kxa6 Nb4+ Kb7 Rf1 Ng3+ Kg1 Qxd4+ Ne3 Qxe3+ Kh2 Ne2 g1=Q Qe5+ Kh1 Nxg1 Kxg1 Qxa5 Rf7+ Kb6 Rf6+ Kc7 Rf7+ Kd6 Rf6+ Kd7 Rf7+ Ke6 Re7+ Kf6 Re4 Qb6+ Kf1 Kf5 Rf4+ Kg5 Re4 Qb7 Re5+ Kf6 Nd3 Qf3+ Ke1 Qxd3 Re2 Qd4 Rf2+ Ke5 Re2+ Kf4 Rf2+ Ke3 Re2+ Kf3 Rc2 Qb4+ Kd1 Ke4 Ke2 Qd4 Rc8 Qe3+ Kd1 Qh3 Rc2 Qf1+ Kd2 Kd4 Rb2 Qf2+ Kc1 Qe1+ Kc2 Kc4 Ra2 Qe4+ Kb2 Kb4 Ra7; 
6K1/n2ppBP1/R1p4k/2b3p1/6p1/5pP1/3N3p/2r5 w - - acd 999; bm Ra4; ce 32754; c7 "No. 290842 (id: P1261124) Popandopulo, Awenir N. source 1: Gazeta Czestochowska, No. 2904, 14/01/1981 stipulation: #7 solution: 1.Kh8? Ld4! 1.Ta4! droht 2.Kh8 Ld4 3.Txd4 nebst 4.g8=S# 1.Ta4! Ld6 2.Te4 La3 3.Tb4 Lxb4 4.Se4 Lc5 5.Sf6+ exf6 6.Kh8 nebst 7.g8=S#"; dm 7; pm Ra4; pv Ra4 Bd6 Re4 Ba3 Rb4 Bxb4 Ne4 h1=Q Kh8 Bc3 Nxc3 Qg1 g8=N#; 
7K/2Np2p1/2nB2B1/r3P3/1Ppkp1R1/7P/2bPPbpP/R1r3q1 w - - acd 58; bm Rxa5; ce 32742; dm 13; pm Rxa5; pv Rxa5 Nxa5 Bf7 Ba4 Bd5 Bc2 Bg8 Ba4 Bh7 g6 Bxg6 Bc2 Bf7 Ba4 Bd5 Bc2 Bg8 Ba4 Bh7 Bc2 Bc5+ Kxe5 Rg5+ Kf6 Rf5+; 
8/1pk2pNP/2p4b/1PPpnp1B/1K2p2R/Q2b1r2/2qNrB2/1R3n2 w - - acd 45; bm Qa5+; ce 32744; dm 12; pm Qa5+; pv Qa5+ Kd7 Qd8+ Kxd8 h8=Q+ Ke7 Qe8+ Kf6 Qxe5+ Kxe5 Bd4+ Kxd4 Nxf3+ Ke3 Nxf5+ Kf2 Rxf1+ Kxf1 Rh1+ Kg2 Rh2+ Kf1 Ng3+; 
8/2N5/1Nbk1n2/7p/6Pb/2K1Qp2/3P3P/6nq w - - acd 999; bm Qe5+; ce 32754; c9 "HHdbVI.1195944.002a.60196"; dm 7; pm Qe5+; pv Qe5+ Kxe5 Nc4+ Ke4 d3+ Kf4 Ne6+ Kxg4 Ne3+ Kh3 Nf4+ Kxh2 Nf1#; 
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - acd 291; bm Nf6+; ce 32478; c0 "Schakend Nederland#2207; 1990; Van Breukelen=G; (+0047.24d6h7) (v); 1-0"; c7 "No. 461284 (id: P1379127) Breukelen, Gijs source 1: Schakend Nederland, No. 2207, 03/1990 stipulation: Gewinn solution: 1.Sf6+! Kg7 2.Sh5+ Kg6 3.Lc2+ Kxh5 4.d8=D Sf7+ 5.Ke6 Sxd8+ 6.Kf5 e2 7.Le4 e1=S 8.Ld5 c2 9.Lc4 c1=S 10.Lb5 Sc7 11.La4 Se2 12.Ld1 Sf3 13.Lxe2 Se6 14.Lxf3#  4....Kh4 5.Df6 Kxg3 6.De5+ Kf2 7.Dh2+ Ke1 8.Dg1+ Ke2 9.Dg4+ Ke1 10.Ke5  2....Kh8 3.d8=D+"; c9 "HHdbVI.0643891.001a.30057"; dm 145; pm Nf6+; pv Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qf4+ Ke2 Qg4+ Ke1 Ke5 c4 Bd1 Kf2 Kd5 Ba3 Qe2+ Kg1 Qxe3+ Kg2 Qxc3 Bf8 Kxc4 Nc5 Qd2+ Kg3 Qe3+ Kg2 Qe2+ Kg3 Qg4+ Kf2 Qf5+ Ke1 Qxf8 Nce4 Qxh6 Kf1 Kd3 Kg1 Bf3 Nxf3; 
8/3P4/n2K2kp/2p3nN/1b6/2p1p1P1/8/3B4 w - - acd 287; bm Bc2+; ce 32482; c9 "HHdbVI.0643895.003a.30057"; dm 143; pm Bc2+; pv Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qf4+ Ke2 Qg4+ Ke1 Ke5 c4 Bd1 Kf2 Kd5 Ba3 Qe2+ Kg1 Qxe3+ Kg2 Qxc3 Bf8 Kxc4 Nc5 Qd2+ Kg3 Qe3+ Kg2 Qe2+ Kg3 Qg4+ Kf2 Qf5+ Ke1 Qxf8 Nce4 Qxh6 Kf1 Kd3 Kg1 Bf3 Nxf3; 
8/3qq3/2kqNq2/QqqNRNn1/1qNRPKPn/2qQBbrP/3qQrP1/4bB2 w - - acd 50; bm Qa8+; ce 32742; dm 13; pm Qa8+; pv Qa8+ Qdb7 Nxe7+ Qdxe7 Na5+ Q5xa5 Rxc5+ Qcxc5 Qda6+ Qab6 Q6xb7+ Qbxb7 Qea6+ Qcb6 Rc4+ Qxc4 Qxb6+ Kd7 Qbxb7+ Qc7+ Qxc7+ Kxe6 Bc4+ Qd5 Bxd5+; 
8/4Kr2/1p6/p3Q2N/3p4/8/n5p1/3n1brk w - - acd 109; bm Kd8; ce 32660; c9 "HHdbVI.0324378.004a.14168"; dm 54; pm Kd8; pv Kd8 Rf8+ Kc7 Rf7+ Kxb6 Rb7+ Kxb7 Ba6+ Kxa6 Nb4+ Kb7 Rf1 Ng3+ Kg1 Qxd4+ Ne3 Qxe3+ Kh2 Ne2 g1=R Qe5+ Kh1 Nxg1 Kxg1 Qxa5 Rf7+ Kb6 Rf6+ Kc7 Rf7+ Kd6 Rf6+ Kd7 Rf7+ Ke6 Re7+ Kf6 Re4 Qb6+ Kf1 Kf5 Rf4+ Kg5 Re4 Qb7 Re5+ Kf6 Nd3 Qf3+ Ke1 Qxd3 Re2 Qc3+ Kd1 Qd4+ Kc1 Kf5 Kc2 Kf4 Kc1 Kf3 Ra2 Qc3+ Rc2 Qe1+ Kb2 Qb4+ Kc1 Ke3 Rb2 Qc3+ Kb1 Kd3 Ka2 Qa5+ Kb1 Qf5 Ka2 Qd5+ Kb1 Kc3 Rc2+ Kb3 Rb2+ Ka3 Kc1 Qh1+ Kc2 Qe4+ Kc1 Qe1+ Kc2; 
8/4p2r/1B2RPb1/2pp1p1p/P2k1K2/1P1Pp1p1/1Pp1P1N1/6br w - - acd 999; bm Bc7; ce 32752; c7 "comment: Die Aufgabe wurde angeregt durch P1239152"; dm 8; pm Bc7; pv Bc7 exf6 Bd8 Rf7 Bxf6+ Rxf6 Ne1 Rh4+ Kg5 Rg4+ Kxf6 c4 Nxc2+ Kc5 b4#; 
8/4p3/7p/4K3/5N2/2p1ppp1/2pbrkp1/2nbrqn1 w - - acd 999; bm Ke6; ce 32754; c7 "No. 284992 (id: P1182987) Nikitin, Wladimir W. source 1: StrateGems, No. M0655, 07-09/2007 stipulation: #7 solution: 1.Ke6 h5 2.Kxe7 h4 3.Kd6 h3 4.Se6 Sd3,Sb3 5.Sg5 Sc5 6.Kxc5 nebst 7.Se4#"; dm 7; pm Ke6; pv Ke6 h5 Kxe7 h4 Kd6 h3 Ne6 Nb3 Ng5 Nc5 Kxc5 h2 Ne4#; 
8/5pNK/5B1P/5R2/1p4k1/rp1ppppb/4rb2/n2n1q2 w - - acd 999; bm Rd5; ce 32752; c7 "No. 306253 (id: P1380130) Reinhold, Frank source 1: Die Welt, No. 1625, 1995 source 2: Rochade Europa, 01/1996 stipulation: #8 solution: 1.Tf5-d5! Sa1-c2 2.Td5-c5 Sd1-b2 3.Tc5-e5 Kg4-f4 4.Sg7-h5+ Kf4-g4 5.Te5-g5+ Kg4-h4 6.Tg5-f5+ Kh4-g4 7.Tf5-f4+ Kg4xh5 8.Tf4-h4#"; dm 8; pm Rd5; pv Rd5 Nc2 Rc5 Nb2 Re5 Kf4 Nh5+ Kg4 Rg5+ Kh4 Rf5+ Kg4 Rf4+ Kxh5 Rh4#; 
8/6Bk/5K2/2P2P2/4PPBn/6RP/1ppppppp/8 w - - acd 97; bm Ra3; ce 32734; c7 "comment: Diese Aufgabe diente der (kaputten) achtfachen Damenumwandlung P1343057 als Vorbild."; dm 17; pm Ra3; pv Ra3 b1=Q Ra8 Qa1+ Rxa1 g1=Q Ra8 Qa1+ Rxa1 e1=Q Ra8 Qa1+ Rxa1 f1=Q Ra8 Qa1+ Rxa1 h1=Q Ra8 Qa1+ Rxa1 d1=Q Ra8 Qa1+ Rxa1 c1=B Ra8 Bb2+ e5 Bxe5+ fxe5 Ng2 Rh8+; 
8/6N1/4p3/7p/1N3P1p/p1pK2Pp/P1R3pb/4k1r1 w - - acd 55; bm Nf5; ce 32744; dm 12; pm Nf5; pv Nf5 exf5 Nd5 Rh1 Ne3 g1=N Rc1+ Kf2 Rf1+ Kxg3 Nxf5+ Kg2 Ne3+ Kg3 Ke4 c2 Nxc2 Kg2 Ne3+ Kg3 f5 Nf3 Rxf3+; 
8/7p/4K2p/3N3P/pp1p3P/2PP1Q1P/3Pppp1/4rkr1 w - - acd 999; bm Nf4; ce 32754; c0 "64 Shakhmatnoye Obozrenye#24; 1980; Bondarenko=F; (+1601.68e6f1); 1-0"; c7 "64 Shakhmatnoye Obozrenye#24;1980;W:Bondarenko=F;(+1601.68e6f1);1-0;1980"; c9 "HHdbVI.0848019.001a.41058"; dm 7; pm Nf4; pv Nf4 b3 Kf5 dxc3 Kg4 cxd2 Kg3 d1=N Nd5 b2 Ne3+ Nxe3 Qxf2#; 
8/7p/6pP/6Pp/2N5/5P1P/5KPR/1k1q4 w - - acd 89; bm Rh1; ce 32680; c0 "1.c Razem"; c7 "1.c Razem;1985;W:Chudzik=Z;(+3101.53f2b1);1-0;1985"; c9 "HHdbVI.0729568.001a.34573"; dm 44; pm Rh1; pv Rh1 Qxh1 Nd2+ Kc2 Nf1 Kd3 f4 Ke4 Ng3+ Kxf4 Nxh1 h4 g3+ Kxg5 gxh4+ Kxh4 Kf3 Kg5 Nf2 Kxh6 Kg4 Kg7 Kg5 h6+ Kf4 Kf7 Ke5 Ke7 Ng4 h5 Ne3 h4 Ng4 Kf7 Kf4 Ke7 Kg5 Ke6 Ne3 Kf7 Ng2 Kg7 Nxh4 Kf7 Nxg6 Ke6 Nh4 Kd5 Nf5 Ke5 h4 Ke4 h5 Kf3 Kg6 Kf2 h6 Kf3 h7 Ke2 Nd4+ Ke3 Kf5 Kxd4 h8=Q+ Kd3 Qe5 Kc4 Ke4 Kb4 Qd4+ Kb3; 
8/8/1B6/4N1p1/4p3/4p3/N1pQp1PK/2bb1kr1 w - - acd 999; bm Qe1+; ce 32754; c0 "2/3 Prize tv18 @2 {m}; 1965; Gorgiev T; White wins;"; c7 "2/3.p Vecherni Kiev;1965;W:Gorgiev=T;(+1372.15h2f1) U2;1-0;1965"; c9 "HHdbVI.1107870.001a.55145"; dm 7; pm Qe1+; pv Qe1+ Kxe1 Kxg1 Bd2 Nc1 Bc3 Nc4 g4 Bc7 Be5 Ba5+ Bc3 Bxc3#; 
8/8/1K5p/p7/2N5/1p6/ppp3P1/kb1R2B1 w - - acd 999; bm Rc1; ce 32750; c9 "HHdbVI.0964708.002a.47445"; dm 9; pm Rc1; pv Rc1 bxc1=Q Bd4+ b2 Kc6 h5 Kb7 h4 Bc3 a4 Kc8 h3 gxh3 a3 Na5 Qd1 Nb3#; 
8/8/3KNN2/p3p3/rnp1p3/1pk5/bp1n4/qrb1N3 w - - acd 998; bm Kd7; ce 32640; dm 64; pm Kd7; pv Kd7 Ra3 Ke8 Ra4 Kf8 Ra3 Kf7 Ra4 Ke8 Ra3 Kd7 Ra4 Kc8 Ra3 Kb7 Ra4 Kb6 Ra3 Kb5 e3 Kb6 Ra4 Kb7 Ra3 Kc8 Ra4 Kd7 Ra3 Ke8 Ra4 Kf8 Ra3 Kf7 Ra4 Ke8 Ra3 Kd7 Ra4 Kc8 Ra3 Kb7 Ra4 Kb6 Ra3 Kb5 e2 Kb6 Ra4 Kb7 Ra3 Kc8 Ra4 Kd7 Ra3 Ke8 Ra4 Kf8 Ra3 Kf7 Ra4 Ke8 Ra3 Kd7 Ra4 Kc8 Ra3 Kb7 Ra4 Kb6 Ra3 Kb5 e4 Kb6 Ra4 Kb7 Ra3 Kc8 Ra4 Kd7 Ra3 Ke8 Ra4 Kf8 Ra3 Kf7 Ra4 Ke8 Ra3 Kd7 Ra4 Kc8 Ra3 Kb7 Ra4 Kb6 Ra3 Kb5 e3 Kb6 Ra4 Kb7 Ra3 Kc8 Ra4 Kd7 Ra3 Ke8 Ra4 Kf8 Ra3 Kf7 Ra4 Ke8 Ra3 Kd7 Ra4 Kc8 Ra3 Kb7 Ra4 Kb6 Ra3 Kb5 a4 Kb6 Nd5+ Nxd5+; 
8/8/8/2p1Q3/8/6Kp/1ppp4/krqb2br w - - acd 999; bm Qe8; ce 32750; c7 "No. 267233 (id: P1110499) Guttmann, Erwin Moritz Herbert source 1: Deutsche Schachbl atter, No. 207, 06/1963 stipulation: #9 solution: 1.De8 Lh2+ 2.Kh4 Lg3+ 3.Kg5 Lf4+ 4.Kf6 Le5+ 5.Ke7 Lf6+ 6.Kd6 Le5+ 7.Kxc5 Ld4+ 8.Kxd4 nebst 9.Da4#  7....Ld6+ 8.Kxd6 nebst 9.Da4# 6....Le7+ 7.Kc7 c4 8.Da4,Da8+ La3 9.Dxa3#  7....Ld6+ 8.Kxd6 nebst 9.Da4#  7....Ld8+ 8.Kxd8 nebst 9.Da4#  1.De8 Lf2+ 2.Kf4 Lg3+ 3.Kg5 Lf4+ 4.Kf6 usw. 2....Le3+ 3.Ke5 Lf4+ 4.Kf6 usw. award: Informalturnier 1962/63 5.-6.Preis geteilt"; dm 9; pm Qe8; pv Qe8 Bh2+ Kh4 Bg3+ Kg5 Bf4+ Kf6 Be5+ Ke7 Bf6+ Kd6 Be5+ Kxc5 Bd4+ Kxd4 h2 Qa4#; 
8/8/8/p1K4p/k1ppppqp/rp5B/1P6/6R1 w - - acd 999; bm Bxg4; ce 32750; c9 "HHdbVI.1388370.002a.72001"; dm 9; pm Bxg4; pv Bxg4 hxg4 Rc1 c3 Rd1 d3 Re1 e3 Rf1 f3 Rg1 g3 Rh1 h3 Rxh3 g2 Rh4#; 
8/b6r/q3R3/p3PP2/3NpnP1/2KBP2p/k2Np1Pp/r3Rbn1 w - - acd 70; bm Rxa1+; ce 32742; dm 13; pm Rxa1+; pv Rxa1+ Kxa1 N4b3+ Ka2 Nc1+ Ka3 Nb1+ Ka4 Bc2+ Kb5 Na3+ Kc5 Nb3+ Kd5 Bxe4+ Kxe4 Nd2+ Kxe3 Nc2+ Kf2 Ne4+ Kxg2 Ne1+ Kh1 Ng3+; 
8/p2Kp1p1/rp6/1p6/brpn4/Rnk5/4p1p1/2B1N1N1 w - - acd 147; bm Kc8; ce 32622; c9 "HHdbVI.1663729.098a.89987"; dm 73; pm Kc8; pv Kc8 Ra5 Kb7 g5 Kc8 Ra6 Kd7 Ra5 Ke8 Ra6 Kf7 Ra5 Kg8 Ra6 Kh7 Ra5 Kh8 Ra6 Kg8 Ra5 Kf7 Ra6 Ke8 Ra5 Kd7 Ra6 Kc8 Ra5 Kb7 g4 Kc8 Ra6 Kd7 Ra5 Ke8 Ra6 Kf7 Ra5 Kg8 Ra6 Kh8 Ra5 Kh7 Ra6 Kg6 Ra5 Kh5 g3 Kg6 Ra6 Kh7 Ra5 Kh8 Ra6 Kg8 Ra5 Kf7 Ra6 Ke8 Ra5 Kd7 Ra6 Kc8 Ra5 Kb7 e6 Kc8 Ra6 Kc7 Ra5 Kb7 e5 Kc8 Ra6 Kd7 Ra5; 

Code: Select all

6K1/8/1p6/p3Q2N/3p4/3r4/n5p1/3n1brk w - - bm Kf8; 
6K1/n2ppBP1/R1p4k/2b3p1/6p1/5pP1/3N3p/2r5 w - - bm Ra4; 
7K/2Np2p1/2nB2B1/r3P3/1Ppkp1R1/7P/2bPPbpP/R1r3q1 w - - bm Rxa5; 
8/1pk2pNP/2p4b/1PPpnp1B/1K2p2R/Q2b1r2/2qNrB2/1R3n2 w - - bm Qa5+; 
8/2N5/1Nbk1n2/7p/6Pb/2K1Qp2/3P3P/6nq w - - bm Qe5+; 
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+; 
8/3P4/n2K2kp/2p3nN/1b6/2p1p1P1/8/3B4 w - - bm Bc2+; 
8/3qq3/2kqNq2/QqqNRNn1/1qNRPKPn/2qQBbrP/3qQrP1/4bB2 w - - bm Qa8+; 
8/4Kr2/1p6/p3Q2N/3p4/8/n5p1/3n1brk w - - bm Kd8; 
8/4p2r/1B2RPb1/2pp1p1p/P2k1K2/1P1Pp1p1/1Pp1P1N1/6br w - - bm Bc7; 
8/4p3/7p/4K3/5N2/2p1ppp1/2pbrkp1/2nbrqn1 w - - bm Ke6; 
8/5pNK/5B1P/5R2/1p4k1/rp1ppppb/4rb2/n2n1q2 w - - bm Rd5; 
8/6Bk/5K2/2P2P2/4PPBn/6RP/1ppppppp/8 w - - bm Ra3; 
8/6N1/4p3/7p/1N3P1p/p1pK2Pp/P1R3pb/4k1r1 w - - bm Nf5; 
8/7p/4K2p/3N3P/pp1p3P/2PP1Q1P/3Pppp1/4rkr1 w - - bm Nf4; 
8/7p/6pP/6Pp/2N5/5P1P/5KPR/1k1q4 w - - bm Rh1; 
8/8/1B6/4N1p1/4p3/4p3/N1pQp1PK/2bb1kr1 w - - bm Qe1+; 
8/8/1K5p/p7/2N5/1p6/ppp3P1/kb1R2B1 w - - bm Rc1; 
8/8/3KNN2/p3p3/rnp1p3/1pk5/bp1n4/qrb1N3 w - - bm Kd7; 
8/8/8/2p1Q3/8/6Kp/1ppp4/krqb2br w - - bm Qe8; 
8/8/8/p1K4p/k1ppppqp/rp5B/1P6/6R1 w - - bm Bxg4; 
8/b6r/q3R3/p3PP2/3NpnP1/2KBP2p/k2Np1Pp/r3Rbn1 w - - bm Rxa1+; 
8/p2Kp1p1/rp6/1p6/brpn4/Rnk5/4p1p1/2B1N1N1 w - - bm Kc8; 
I hope to finish up tomorrow morning, when my batch of 1024 analysis trials will be complete. It would have finished long ago, but my machine did a reboot, probably due to automatic updates.

Even if these positions are not interesting to you, I have become intensely interested in them. After all, consider your initial and reasonable question as to whether any such positions even exist. And it is a very reasonable question. Today's chess engines are highly tuned to examine favorable board features and today's static evaluation is like the evaluation of a human GM. And considering that one move is fantastic and all the other moves are terrible yet the engine has to do a lot of searching to find them puts these positions into a special class for me.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
chesskobra
Posts: 326
Joined: Thu Jul 21, 2022 12:30 am
Full name: Chesskobra

Re: test positions when all the moves losing except a winning move

Post by chesskobra »

Dann Corbit wrote: Sun Jan 19, 2025 7:10 am
In other words should we drive the best move clear to winning checkmate and all the other moves clear to losing by checkmate or are approximations good enough?
I think approximations are also very interesting, especially for humans interested in puzzles. So I am keeping copies of the sets that you have posted. Thank you. Are some of the positions easier for humans (to at least guess the best move) than for engines?
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

Last set:

Code: Select all

8/pKb2prr/3k1P2/2p2B1p/4Pp2/2PN4/p7/4B1n1 w - - acd 999; bm Nb2; ce 32754; c7 "No. 299810 (id: P1329868) Makaronez, Leonid source 1: Schweizerische Schachzeitung, No. 13839, 06/1994 stipulation: #7 solution: 1.Sb2! Ke5 2.Lh4 f3 3.Sd3+ Kd6 4.Lf2 Lb6 5.Ld4 cxd4 6.c4 ...7.e5# award: 2.Lob"; dm 7; pm Nb2; pv Nb2 Ke5 Bh4 f3 Nd3+ Kd6 Bf2 Bb6 Bd4 cxd4 c4 h4 e5#; 
8/r6b/3R3q/2PP3p/1PnpN3/p2PBK2/pP1pN2k/1nbR3r w - - acd 69; bm Rxh1+; ce 32742; dm 13; pm Rxh1+; pv Rxh1+ Kxh1 N4g3+ Kh2 Nf1+ Kh3 Ng1+ Kh4 Bf2+ Kg5 Nh3+ Kf5 Ng3+ Ke5 Bxd4+ Kxd4 Ne2+ Kxd3 Nf2+ Kc2 Nd4+ Kxb2 Nd1+ Ka1 Nb3+; 
b1B4K/1r1N2R1/kB4pp/3p1p2/P2pp3/1P3P1n/3P3q/b3n1r1 w - - acd 999; bm b4; ce 32752; c7 "No. 292894 (id: P1271902) Schmitt, Olivier source 1: idee & form, No. 3026, 01/2012 stipulation: #8 solution: 1.b4! De2 2.Lc5 Dh2 3.f4 Dxf4 4.Lb6 Df1 5.d3 Dxd3 6.Lc5 Dg3 7.Txg6+ Dxg6 8.Sb8#"; dm 8; pm b4; pv b4 Qe2 Bc5 Qh2 f4 Qxf4 Bb6 Qf1 d3 Qxd3 Bc5 Qg3 Rxg6+ Qd6 Nb8#; 
B1n5/5p1n/N1p2P1P/bN4p1/RP2P1K1/Q2pr3/RBP2k2/5b2 b - - acd 65; bm Bh3+; ce 32742; dm 13; pm Bh3+; pv Bh3+ Kh5 Bg2 Kg4 Rxe4+ Kf5 Rf4+ Ke5 Bc7+ Naxc7 Re4+ Kf5 Ne7+ fxe7 Re3 Kg4 Bh3+ Kh5 Bf5 Qxd3 Rh3+ Qxh3 Bg6+ Kg4 f5+; 
b1r1r2k/b1qn1p1p/5PpB/3pn3/pp1N4/R1P4Q/4NRPP/1B4K1 w - - acd 29; bm Bg7+; ce 32740; c9 "score 288, hits 12, misses 2"; dm 14; pm Bg7+; pv Bg7+ Kg8 Qxh7+ Kxh7 Rf4 Nf3+ Rxf3 Nxf6 Bxf6 Qd7 Rf4 Bxd4+ cxd4 Rc1+ Nxc1 Re1+ Kf2 Qf5 Rxf5 gxf5 Bxf5+ Kg8 Rh3 Rf1+ Kxf1 a3 Rh8+; 
B7/8/1p2p1N1/1n2Pp2/1P3Pp1/6p1/2ppPp1P/R1nkbK2 w - - acd 999; bm Nh4; ce 32750; c7 "No. 266728 (id: P1096492) Palatz, Franz; Leon-Martin, Gabriel source 1: Die Schwalbe, No. XX, 12/1933 stipulation: #9 solution: 1.hxg3? Sa3 2.Sh4 Sb1!! 3.Sg2 Sb3  1.Sh4! gxh2 2.Lh1 Sa3 3.Sg2 Sc4 4.b5 g3 5.e3 Sa3 6.e4 Sc4 7.exf5 exf5 8.e6 S beliebig 9.Se3#  2....Sc3,c7 3.Sg2 Sd5 4.b5 g3 5.e3 Sxf4 6.Sxf4 g2+ 7.Sxg2 f4 8.e4 f3 9.Se3# wei ser Seeberger.In Quelle ausf uhrlichst durch Palatz kommentiert. dedication: A.C.White gewidmet"; dm 9; pm Nh4; pv Nh4 gxh2 Bh1 Na3 Ng2 Nc4 b5 g3 e3 Na5 e4 Nc4 exf5 exf5 e6 Ne3+ Nxe3#; 
b7/r1RNB2K/1p2p3/q2pNkpp/1p3p1P/3P1R2/3Pp3/r7 w - - acd 93; bm Nf7; ce 32740; c7 "No. 298008 (id: P1317812) Karbowiak, Uwe; Kr atschmer, Ralf source 1: Die Schwalbe, No. 16391, 08/2015 stipulation: #14 solution: 1.Tc8? Txd7 2.Tf8+ Kxe5 3.d4+ Kxd4 4.T8xf4+ gxf4! 1.hxg5?  1.Sf7! droht 2.Sh6# 1....Kg4 2.Sde5+ Kf5 3.Sg6 droht 4.Sh6#, 3....Kg4 4.Sfe5+ Kf5 5.hxg5 Tf1 6.Sf7 Kg4 7.Sge5+ Kf5 8.Sd7 Kg4 9.Sfe5+ Kf5 10.Tc8 Txd7 11.Tf8+ Kxe5 12.d4+ Kxd4 13.T8xf4+ Ke5 14.d4#"; dm 14; pm Nf7; pv Nf7 Kg4 Nde5+ Kf5 Ng6 Kg4 Nfe5+ Kf5 hxg5 Rf1 Nf7 Kg4 Nge5+ Kf5 Nd7 Kg4 Nfe5+ Kf5 Rc8 Rxd7 Rf8+ Kxe5 d4+ Kxd4 R8xf4+ Ke5 d4+; 
Bk1n3q/p7/P1P5/1p6/1P2p3/4P3/1n6/K4Q2 w - - acd 49; bm Qf4+; ce 32720; c0 "3.p Hinds JT Suomen Shakki"; c7 "3.p Hinds JT Suomen Shakki;1948;W:Lazard=F;(+4016.43a1b8);1-0;1948"; c9 "HHdbVI.1317245.001a.67561"; dm 24; pm Qf4+; pv Qf4+ Kxa8 Qh4 Qg8 c7 Nb7 Qd8+ Qxd8 axb7+ Kxb7 cxd8=Q Nc4 Qd5+ Kc7 Qxb5 Nb6 Qe5+ Kc6 Qxe4+ Kd7 Qb7+ Kd6 Qxa7 Nd7 b5 Nc5 Qa3 Kd5 Qc3 Ne6 Qc6+ Ke5 b6 Nd8 Qc7+ Ke4 Qxd8 Kf3 b7 Ke2 Qd5 Kf2 b8=Q Kxe3 Qg3+ Ke2 Qdd3+; 
BKn1q3/BRPk1P1R/3p3N/1p2n1p1/2p2r2/3b2p1/N2bp2P/4r3 w - - acd 65; bm f8=N+; ce 32742; dm 13; pm f8=N+; pv f8=N+ Kc6 Rb6+ Kc5 Rc6+ Kd5 Rc5+ Kd4 Rd5+ Ke4 Rd4+ Ke3 Re4+ Kf3 Re3+ Kf2 Rf3+ Kg2 Rf2+ Kh3 Bg2+ Kxh2 Ng4+ Kg1 Rh1+; 
bn2B3/rn2Bp1p/p6p/k2N1p2/8/2bp1p2/5P1p/3K3N w - - acd 95; bm Kc1; ce 32702; c9 "HHdbVI.1634090.017a.88375"; dm 33; pm Kc1; pv Kc1 Be1 Bf6 Bb4 Kd1 f4 Kc1 Be1 Be7 Bc3 Kd1 f5 Kc1 Be1 Bf6 Bb4 Kd1 h5 Kc1 Be1 Be7 Bc3 Kd1 h4 Kc1 Be1 Bf6 Bb4 Kd1 h3 Kc1 Be1 Be7 Bc3 Kd1 h6 Kc1 Be1 Bf6 Bb4 Kd1 h5 Kc1 Ba3+ Kd2 Bb4+ Kd1 h4 Kc1 Be1 Be7 Bc3 Kd1 d2 Kc2 Nd7 Bxd7 d1=Q+ Kxd1 Be1 Kxe1 Nc5 Bd8+ Rc7 Bxc7+; 
bn2B3/rn2Bp1p/p7/k2N1p2/7p/3p1p2/1K3P1p/4b2N w - - acd 92; bm Kc1; ce 32716; c9 "HHdbVI.1634134.039a.88375"; dm 26; pm Kc1; pv Kc1 Bc3 Kd1 f6 Kc1 Be1 Bxf6 Bb4 Kd1 h6 Kc1 Be1 Be7 Bc3 Kd1 f4 Kc1 Be1 Bf6 Bb4 Kd1 h5 Kc1 Ba3+ Kd2 Bb4+ Kd1 h3 Kc1 Ba3+ Kd2 Bb4+ Kd1 h4 Kc1 Be1 Be7 Bc3 Kd1 d2 Kc2 d1=Q+ Kxd1 Nc6 Bxc6 Be1 Kxe1 Nc5 Bd8+ Rc7 Bxc7+; 
k1K5/1N1p1p2/1Ppp4/6N1/5p1p/8/1b3pp1/3n2rq w - - acd 999; bm Ne6; ce 32754; dm 7; pm Ne6; pv Ne6 fxe6 Na5 f1=Q b7+ Ka7 b8=Q+ Ka6 Nb3 Qb5 Qa8+ Kb6 Qb7#; 
k1r5/prp4p/Pp6/2P5/3N2p1/6KB/8/8 w - - acd 96; bm c6; ce 32722; c0 "Jerusalem Post; 1953; Segenreich=S; (+0611.25g3a8); 1-0"; c7 "Jerusalem Post;1953;W:Segenreich=S;(+0611.25g3a8);1-0;1953"; c9 "HHdbVI.1262089.001a.64154"; dm 23; pm c6; pv c6 Kb8 cxb7 c6 bxc8R+ Kxc8 Nxc6 b5 Nxa7+ Kb8 Nxb5 gxh3 Kxh3 Ka8 Kg4 h6 Kh5 Kb8 Kxh6 Ka8 Kh5 Kb8 Kg5 Kc8 Kf4 Kb8 Ke5 Kc8 Kd5 Kb8 Kc6 Kc8 a7 Kd8 Kd6 Ke8 Ke6 Kf8 a8Q+ Kg7 Qg2+ Kh6 Kf6 Kh5 Qh3+; 
K3b3/pNNp4/2kP1p2/P1B1p3/5P1b/3p1p2/3P1pp1/1n1r1rq1 w - - acd 998; bm f5; ce 32738; dm 15; pm f5; pv f5 Rc1 Bb4 Rc5 Bxc5 Rc1 Bb4 Rc5 Bxc5 f1Q Bb4 Qc5 Bxc5 g1Q Bb4 Qc5 Bxc5 Qg1 Bb4 Qc5 Bxc5 Bf2 Bb4 Bc5 Bxc5 f2 Bb4 f1Q Nd8+; 
K6k/2bpNR2/8/5P2/1p3p2/2nn2p1/3p2p1/R7 w - - acd 999; bm Ra6; ce 32754; c7 "comment: (MZ403)  urspr unglich sBc7 statt sLc7 ."; dm 7; pm Ra6; pv Ra6 d6 Kb7 Nc5+ Kc6 Nxa6 f6 Nb8+ Kb7 g1=Q Ng6+ Kg8 Rg7#; 
K6k/pp1n1R2/1r2p1Rp/b1p1p3/5p2/3p4/1B6/5b2 w - - acd 46; bm Rfg7; ce 32742; dm 13; pm Rfg7; pv Rfg7 h5 Rg8+ Kh7 R6g7+ Kh6 Rg1 Kh7 R8g7+ Kh8 R7g5 Be2 Rg8+ Kh7 R1g7+ Kh6 Rg6+ Kh7 R8g7+ Kh8 Rxd7 Bc3 Bxc3 d2 Bxe5+; 
K7/1p2pN2/1B2B3/3P3n/1R1pkpP1/P7/PpbPPb2/1q3r2 w - - acd 81; bm Bc7; ce 32744; c7 "No. 300219 (id: P1334004) Marandjuk, Michajlo N.; Orlow, Jewgen S. source 1: SuperProblem (Website), No. C015, 24/06/2014 stipulation: #12 solution: 1.Lc7! droht 2.Sg5# 1....Lh4 2.Le5 droht 3.Txd4# 2....Lf2 3.Lb8 Lh4 4.La7 b6 5.Lxb6 Lf2 6.Lc7 Lh4 7.Le5 Lf2 8.Lb8 Lh4 9.La7 Lf2 10.Lf5+ Kxd5 11.Tb5+ Kc6 12.Tc5# award: 1.-3.Preis (#7-N)"; dm 12; pm Bc7; pv Bc7 Bh4 Be5 Bf2 Bb8 Bh4 Ba7 b6 Bxb6 Bf2 Bc7 Bh4 Be5 Bf2 Bb8 Bh4 Ba7 Bf6 Bf5+ Kxd5 Rb5+ Kc6 Rc5+; 
K7/5BN1/2p5/3RBP2/2pPk2P/pPPbpp2/2p1pq1p/2b4n w - - acd 999; bm Ne8; ce 32748; c7 "No. 304619 (id: P1368150) Pankratjew, Alexandr N.; M uller, Dieter source 1: Uralski Problemist, 2001 stipulation: #10 solution: 1.Se8! droht 2.Sd6# 1....Kxf5 2.Sg7+ Ke4 3.Lg6+ Kxd5 4.Lf7+ Ke4 5.Le8 droht 6.Lxc6# 5....Kd5 6.Kb7 cxb3 7.Lf7+ Ke4 8.Lg6+ Kd5 9.Lxd3 ...10.c4# award: 4.Preis Beljakin-80-JT"; dm 10; pm Ne8; pv Ne8 Kxf5 Ng7+ Ke4 Bg6+ Kxd5 Bf7+ Ke4 Be8 Kd5 Kb7 cxb3 Bf7+ Ke4 Bg6+ Kd5 Bxd3 e1=Q c4#; 
K7/p5p1/rpNb2p1/1p2p3/kPp5/qr4N1/3Q2p1/n2B2Rb w - - acd 67; bm Ne4; ce 32718; c0 "Vielzugige Schachaufgaben#30; 1890; Blathy=O; (+4775.18a8a4) (c); 1-0"; c7 "Vielzugige Schachaufgaben#30;1890;W:Blathy=O;(+4775.18a8a4) (c);1-0;1890"; c9 "HHdbVI.1659689.001a.89969"; dm 25; pm Ne4; pv Ne4 Bxb4 Qc3 g5 Kb7 Ra5 Nxb4 Qxb4 Qxa1+ Qa3 Qxe5 Qa2 Nc3+ Kb4 Nxa2+ Rxa2 Bxb3 cxb3 Qd4+ Ka3 Kxa7 b2 Qc3+ Ka4 Kxb6 Ra1 Qc2+ Ka3 Kxb5 b1=Q+ Rxb1 Rxb1+ Qxb1 g1=Q Qxg1 Kb3 Qe3+ Kc2 Kc4 Bd5+ Kxd5 Kd1 Kc4 Kc2 Qe2+ Kb1 Kc3 g4 Qb2+; 
Kn6/prp1N2p/8/rq1pP1n1/1p1PkP1P/P1P1P3/3PB2b/4N3 w - - acd 102; bm Bg4; ce 32746; c7 "No. 305257 (id: P1373916) Kutzborski, Dieter source 1: harmonie-aktiv, No. 2234, 07/2015 source 2: Schach, No. 19106, 12/2019 stipulation: #11 solution: 1.Lg4! Dd7 2.Sf5 droht 3.d3# 2....Db5 3.Sh6 Dd7 4.e6 Dxe6 5.Sf5 Da6 6.Se7 De6,Df6 7.Ld1 b3 8.Le2 Da6 9.c4 dxc4 10.hxg5 ...11.Lf3# 9....Dxc4 10.Lg4 ...11.Lf5# award: 1.Preis"; dm 11; pm Bg4; pv Bg4 Qd7 Nf5 Qb5 Nh6 Qd7 e6 Qxe6 Nf5 Qa6 Ne7 Qf6 Bd1 b3 Be2 Qa6 c4 Qxc4 Bg4 Nc6 Bf5+; 
N1b3Kb/3pp1Bp/p2N4/kp1PrP1P/r1nP2rq/P3pp2/QN3P2/5B2 w - - acd 998; bm Qb3; ce 32744; dm 12; pm Qb3; pv Qb3 Rxd4 Qc3+ b4 Ndxc4+ Rxc4 Nxc4+ Qxc4 axb4+ Rxb4 Bxc4 Rxd5 Kxh8 e5 fxe6 Rd3 Bxd3 Ka4 Qa1+ Kb3 Qb2+ Ka4 Qa2+; 
N1K1k1br/3p1n1r/2p2pN1/3p1N2/2P2q1P/8/P2P4/8 w - - acd 999; bm Nc7+; ce 32748; c9 "HHdbVI.0366546.013a.16177"; dm 10; pm Nc7+; pv Nc7+ Qxc7+ Kxc7 dxc4 a4 c3 dxc3 d6 Kc8 d5 a5 c5 a6 d4 a7 d3 a8=Q Nd6+ Nxd6#; 
N1K2b2/1p1Q4/kB6/Pp4p1/3P1q2/n1p4n/N4pbp/r7 w - - acd 999; bm Qd6; ce 32748; c9 "HHdbVI.0195402.005a.08424"; dm 10; pm Qd6; pv Qd6 Qf5+ Kd8 Be7+ Qxe7 Qd5+ Qd7 Qg8+ Qe8 Qxe8+ Kxe8 Re1+ Kd8 Re8+ Kxe8 Bc6+ Kd8 h1=Q Nc7#; 
N1K5/1B4n1/2Pp4/k1NP2r1/Pp3n2/1Ppp4/Q2B4/rq6 w - - acd 999; bm Nb6; ce 32754; c7 "No. 298921 (id: P1325040) Pankratjew, Alexandr N.; M uller, Dieter source 1: S achsische Zeitung, No. 2400, 03/02/1996 stipulation: #7 solution: 1.Sb6! droht 2.Sc4# 1....Kxb6 2.Sd7+ Ka5 3.Sb6 Kxb6 4.Le3+ Ka5 5.Lb6+ Kxb6 6.Df2+ Ka5 7.Da7#"; dm 7; pm Nb6; pv Nb6 Kxb6 Nd7+ Ka5 Nb6 Kxb6 Be3+ Ka5 Bb6+ Kxb6 Qf2+ Ka5 Qa7#; 
n1n1b3/P1P3p1/P1P1K1p1/3NP3/7p/4p1pP/4P1P1/4kBR1 b - - acd 60; bm Kd2; ce 32742; dm 13; pm Kd2; pv Kd2 Rh1 Kc1 Rg1 Kb2 Rh1 Kb3 Rg1 Ka3 Rh1 Kb2 Rg1 Kc1 Rh1 Kd2 Rg1 Ke1 Rh1 Kf2 Rh2 Kg1 Rh1+ Kxh1 Nc3 Nxc7+; 
nb1B4/qrnPp3/rkp1Pp2/p1p1pp2/2P1Np2/P7/1PN1K1P1/8 w - - acd 998; bm a4; ce 32744; dm 12; pm a4; pv a4 fxe4 Ne1 f3+ gxf3 f5 Kf1 e3 Ng2 e2+ Kxe2 f4 Nh4 e4 Nf5 e3 Kd3 e2 Nxe7 e1N+ Kc3 Nc2 Nc8+; 
nB5K/2PN3P/3PNP1P/1Rp1PR2/1pP5/p3rPpb/kppp2pb/q1n2B1r w - - acd 101; bm Bd3; ce 32668; c7 "No. 57208 (id: P1008770) Heinonen, Unto source 1: Die Schwalbe, No. 10657, 02/2000 stipulation: s#50 Doppell angstz uger solution: 1.Ld3 Td1 2.Lf1 Tb3 3.Ld3 Th1 4.Lf1 Txf3 5.Ld3 Td1 6.Lf1 Tb3 7.Tf2 Lxe6 8.Tf5 Tf3 9.Ld3 Th1 10.Lf1 Tb3 11.Tf2 Lh3 12.Tf5 Tf3 13.Ld3 Td1 14.Lf1 Tb3 15.Tf2 Lxd7 16.Tf5 Tf3 17.Ld3 Th1 18.Lf1 Tb3 19.Tf2 Lh3 20.Tf5 Tf3 21.Ld3 Td1 22.Lf1 Tb3 23.Tf2 Lc8 24.Tf5 Lxf5 25.Ld3 Lc8 26.Lg6 Lh3 27.Lxc2 Lc8 28.Lg6 Lh3 29.Lb1+ Kxb1 30.Tb7 Lc8 31.Txb4 Lh3 32.Tb7 Lc8 33.Txb3 Lh3 34.Txg3 Lc8 35.Txa3 Lh3 36.Txh3 Da7 37.Ta3 Lxe5 38.Th3 Da1 39.Ta3 Lh2 40.Th3 Da7 41.Ta3 Lxd6 42.Th3 Da1 43.Ta3 Lh2 44.Th3 Lxc7 45.Ta3 Lh2 46.Lxh2 Th1 47.Lb8 Txh6 48.Lh2 Txh2 49.Th3 Da7 50.Ta3 Dxh7#"; dm 50; pm Bd3; pv Bd3 Rd1 Bf1 Rb3 Bd3 Rh1 Bf1 Rxf3 Bd3 Rd1 Bf1 Rb3 Rf2 Bxe6 Rf5 Rf3 Bd3 Rh1 Bf1 Rb3 Rf2 Bh3 Rf5 Rf3 Bd3  Rd1 Bf1 Rb3 Rf2 Bxd7 Rf5 Rf3 Bd3 Rh1 Bf1 Rb3 Rf2 Bh3 Rf5 Rf3 Bd3 Rd1 Bf1 Rb3 Rf2 Bc8 Rf5 Bxf5 Bd3  Bc8 Bg6 Bh3 Bxc2 Bc8 Bg6 Bh3 Bb1+ Kxb1 Rb7 Bc8 Rxb4 Bh3 Rb7 Bc8 Rxb3 Bh3 Rxg3 Bc8 Rxa3 Bh3 Rxh3  Qa7 Ra3 Bxe5 Rh3 Qa1 Ra3 Bh2 Rh3 Qa7 Ra3 Bxd6 Rh3 Qa1 Ra3 Bh2 Rh3 Bxc7 Ra3 Bh2 Bxh2 Rh1 Bb8  Rxh6 Bh2 Rxh2 Rh3 Qa7 Ra3 Qxh7#; 
r1b5/1pKp4/pP1P4/P6p/3pn2p/1P1k1p2/1P3p2/3B1N1N w - - acd 117; bm Kd8; ce 32652; c9 "HHdbVI.1661907.064a.89980"; dm 58; pm Kd8; pv Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8 Kd8 Ra8 Kc7 h3 Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8; 
r1b5/1pKp4/pP1P4/P6p/3pn3/1P1k1p1p/1P3p2/3B1N1N w - - acd 95; bm Kd8; ce 32674; c9 "HHdbVI.1661929.075a.89980"; dm 47; pm Kd8; pv Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8 Kd8 Ra8 Kc7 h4 Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8; 
r1b5/1pKp4/pP1P4/P7/3pn2p/1P1k1p2/1P3p1p/3B1N1N w - - acd 51; bm Kd8; ce 32718; c9 "HHdbVI.1661973.097a.89980"; dm 25; pm Kd8; pv Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8 Kd8 Ra8 Kc7 h3 Kd8 Rb8 Ke7 Ra8 Kf8 Rb8 Kg7 Ra8 Kh6 Rb8 Kg6 Ra8 Kg7 Rb8 Kf8 Ra8 Ke7 Rb8; 
r1brn2q/2pP3n/2P5/1P1k2pP/2R2pP1/p1B1pK2/B1p5/8 w - - acd 53; bm Bb4; ce 32742; dm 13; pm Bb4; pv Bb4 Qb2 Rc5+ Kd6 Rd5+ Ke6 Rd6+ Ke7 Re6+ Kf7 Re7+ Kf8 Rf7+ Kg8 Rf8+ Kg7 Rg8+ Kf6 Rg6+ Ke5 Re6+ Kd4 Re4+ Kd3 Bc4+; 
r3n3/bR1p4/1p1Np3/1pk1K3/2pp4/8/2N5/8 w - - acd 27; bm Rc7+; ce 32742; c0 "Schweizerische Schachzeitung#0767; 1948; Kraemer=A; (+0435.06e5c5); 1-0"; c7 "Schweizerische Schachzeitung#0767;1948;W:Kraemer=A;(+0435.06e5c5);1-0;1948"; c9 "HHdbVI.1321844.001a.67854"; dm 13; pm Rc7+; pv Rc7+ Nxc7 Ne4+ Kc6 Nb4+ Kb7 Nd6+ Kb8 Kxd4 e5+ Ke4 c3 Kd3 e4+ Kc2 e3 Kd3 e2 Kxe2 c2 Kd2 c1Q+ Kxc1 Na6 Nxa6+; 
r6r/6pk/p7/4p3/4Npnq/8/1RBR1Qn1/3b1K2 w - - acd 57; bm Ng5+; ce 32730; c0 "La Strategie#0917"; c7 "La Strategie#0917;1922;W:Daniel=A;(+4847.04f1h7);1-0;1922"; c9 "HHdbVI.1571274.001a.84188"; dm 19; pm Ng5+; pv Ng5+ Kh6 Qb6+ Nf6 Nf7+ Kh5 Bxd1+ f3 Rxg2 Qc4+ Kg1 Ng4 Rh2+ Nxh2 Rxh2+ Kg4 Qg6+ Kf4 Qg5+ Ke4 Bxf3+ Kxf3 Rf2+ Ke4 Qxe5+ Kd3 Qe2+ Kd4 Rf4+ Kc5 Rxc4+ Kb5 Nd6+ Kb6 Qb2+ Ka7 Rc7+; 
r7/pk5p/1p5R/nN3Qp1/2P2bP1/5P2/PPKNrq2/8 w - - acd 999; bm Rxh7+; ce 32752; c0 "Essai sur le Jeu des Echecs#057; 1737; Stamma=P; (+4735.54c2b7) (v) U2; 1-0"; c7 "No. 298799 (id: P1324400) Stamma, Philipp source 1: The noble Game of Chess, No. 57, 1745 source 2: Stamma's Hundert Endspiele, No. 57, 1856 stipulation: #7 solution: 1.Txh7+ Ka6 2.Dc8+ Sb7 3.Dxb7+ Ka5 4.b4+ Kxb4 5.a3+ Ka5 6.Dxa7+ Txa7 7.Txa7#"; c9 "HHdbVI.1704387.001a.92615"; dm 8; pm Rxh7+; pv Rxh7+ Re7 Rxe7+ Ka6 Qc8+ Nb7 Qxb7+ Ka5 b4+ Kxb4 a3+ Ka5 Qxa7+ Rxa7 Rxa7#; 

Code: Select all

8/pKb2prr/3k1P2/2p2B1p/4Pp2/2PN4/p7/4B1n1 w - - bm Nb2; 
8/r6b/3R3q/2PP3p/1PnpN3/p2PBK2/pP1pN2k/1nbR3r w - - bm Rxh1+; 
b1B4K/1r1N2R1/kB4pp/3p1p2/P2pp3/1P3P1n/3P3q/b3n1r1 w - - bm b4; 
B1n5/5p1n/N1p2P1P/bN4p1/RP2P1K1/Q2pr3/RBP2k2/5b2 b - - bm Bh3+; 
b1r1r2k/b1qn1p1p/5PpB/3pn3/pp1N4/R1P4Q/4NRPP/1B4K1 w - - bm Bg7+; 
B7/8/1p2p1N1/1n2Pp2/1P3Pp1/6p1/2ppPp1P/R1nkbK2 w - - bm Nh4; 
b7/r1RNB2K/1p2p3/q2pNkpp/1p3p1P/3P1R2/3Pp3/r7 w - - bm Nf7; 
Bk1n3q/p7/P1P5/1p6/1P2p3/4P3/1n6/K4Q2 w - - bm Qf4+; 
BKn1q3/BRPk1P1R/3p3N/1p2n1p1/2p2r2/3b2p1/N2bp2P/4r3 w - - bm f8=N+; 
bn2B3/rn2Bp1p/p6p/k2N1p2/8/2bp1p2/5P1p/3K3N w - - bm Kc1; 
bn2B3/rn2Bp1p/p7/k2N1p2/7p/3p1p2/1K3P1p/4b2N w - - bm Kc1; 
k1K5/1N1p1p2/1Ppp4/6N1/5p1p/8/1b3pp1/3n2rq w - - bm Ne6; 
k1r5/prp4p/Pp6/2P5/3N2p1/6KB/8/8 w - - bm c6; 
K3b3/pNNp4/2kP1p2/P1B1p3/5P1b/3p1p2/3P1pp1/1n1r1rq1 w - - bm f5; 
K6k/2bpNR2/8/5P2/1p3p2/2nn2p1/3p2p1/R7 w - - bm Ra6; 
K6k/pp1n1R2/1r2p1Rp/b1p1p3/5p2/3p4/1B6/5b2 w - - bm Rfg7; 
K7/1p2pN2/1B2B3/3P3n/1R1pkpP1/P7/PpbPPb2/1q3r2 w - - bm Bc7; 
K7/5BN1/2p5/3RBP2/2pPk2P/pPPbpp2/2p1pq1p/2b4n w - - bm Ne8; 
K7/p5p1/rpNb2p1/1p2p3/kPp5/qr4N1/3Q2p1/n2B2Rb w - - bm Ne4; 
Kn6/prp1N2p/8/rq1pP1n1/1p1PkP1P/P1P1P3/3PB2b/4N3 w - - bm Bg4; 
N1b3Kb/3pp1Bp/p2N4/kp1PrP1P/r1nP2rq/P3pp2/QN3P2/5B2 w - - bm Qb3; 
N1K1k1br/3p1n1r/2p2pN1/3p1N2/2P2q1P/8/P2P4/8 w - - bm Nc7+; 
N1K2b2/1p1Q4/kB6/Pp4p1/3P1q2/n1p4n/N4pbp/r7 w - - bm Qd6; 
N1K5/1B4n1/2Pp4/k1NP2r1/Pp3n2/1Ppp4/Q2B4/rq6 w - - bm Nb6; 
n1n1b3/P1P3p1/P1P1K1p1/3NP3/7p/4p1pP/4P1P1/4kBR1 b - - bm Kd2; 
nb1B4/qrnPp3/rkp1Pp2/p1p1pp2/2P1Np2/P7/1PN1K1P1/8 w - - bm a4; 
nB5K/2PN3P/3PNP1P/1Rp1PR2/1pP5/p3rPpb/kppp2pb/q1n2B1r w - - bm Bd3; 
r1b5/1pKp4/pP1P4/P6p/3pn2p/1P1k1p2/1P3p2/3B1N1N w - - bm Kd8; 
r1b5/1pKp4/pP1P4/P6p/3pn3/1P1k1p1p/1P3p2/3B1N1N w - - bm Kd8; 
r1b5/1pKp4/pP1P4/P7/3pn2p/1P1k1p2/1P3p1p/3B1N1N w - - bm Kd8; 
r1brn2q/2pP3n/2P5/1P1k2pP/2R2pP1/p1B1pK2/B1p5/8 w - - bm Bb4; 
r3n3/bR1p4/1p1Np3/1pk1K3/2pp4/8/2N5/8 w - - bm Rc7+; 
r6r/6pk/p7/4p3/4Npnq/8/1RBR1Qn1/3b1K2 w - - bm Ng5+; 
r7/pk5p/1p5R/nN3Qp1/2P2bP1/5P2/PPKNrq2/8 w - - bm Rxh7+; 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

chesskobra wrote: Mon Jan 20, 2025 2:26 pm I think approximations are also very interesting, especially for humans interested in puzzles. So I am keeping copies of the sets that you have posted. Thank you. Are some of the positions easier for humans (to at least guess the best move) than for engines?
Some of the problems are not nearly so difficult as the others. There are problems that SF will not solve in three minutes with 30 cores.
I used special mate solvers to solve some of them, and some took a very long time. A few required back and forth analysis using the author supplied pv along with my generated, step-wise pvs.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

Here is a link with the full set:


There are some corrections (three positions got overwritten in the main table with inferior information).
There are also additional annotations in the seul-bon-ana.epd file that should help trace some of the positions if people want to know the background.

I guess that a thorough pounding of this test set will probably weed out some positions, but I guess there will still be at least 100 out of 120 correct in the end.

Annotations like HHdbVI.1634134.039a.88375 in field c9 refer to (for instance) the database HHdbVI as converted to EPD, at line #1634134, with move 039a (39th move for white) and game #88375.
So if you have HHdbVI you can probably find those referenced positions that have HHdbVI notes.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
Dann Corbit
Posts: 12721
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: test positions when all the moves losing except a winning move

Post by Dann Corbit »

For this position [d]2N5/p4P2/p4RqP/P2krb2/5RNK/2PPB1P1/3P1pP1/4nQ2 b - - I have this pv:
Nf3+ gxf3 Qh5+ Kxh5 Bg6+ Kxg6 Rg5+ Kh7 Rg7+ Kh8 Rh7+ Kg8 Rh8+ Kg7 Rh7+ Kf8 Rh8+ Ke7 Re8+ Kd7 Rd8+ Kc7 Rd7+ Kb8 Rb7+ Ka8 Rb8+ Kxa7 Rb7+ Kxa6 Ra7+ Kb5 Rxa5+ Kb4 Rb5+ Ka3 Rb3+ Ka2 Rb2+ Ka1 Ra2+ Kb1 Rb2+ Kc1 Rb1+ Kc2 Rb2+ Kd1 Rb1+ Ke2 Re1+ Kxf2 Re2+ Kg1 Rg2+
with a score of 32676, but maybe there was a bug, because I only have one mate solution, and usually I have a lot of them (I try different engines on mate problems to see how well they fare at solving).
I will re-examine this one later.
Right now, the electric company is watching me and I am supposed to curtail my electricity usage between 8AM and 10AM.
I am one of the biggest electricity using households in Federal Way, and I get constant requests to know if I want training to reduce my electric power usage.
Good thing I am not running my industrial servers right now. Several of them have 4 power supplies in the server with over 1000 watts per power supply. I imagine my electric meter would be emitting smoke, and whining in agony as it furiously spins.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.