For SF10, 10 positions are easy, 1 is middle-hard (#12) and 4 are a bit hard.jdart wrote: ↑Sun Dec 02, 2018 3:54 am Some I have collected recently. Not verified at deep time control. May be considered not hard enough:
3r2k1/6p1/5p1p/2q2P2/2b1pBPP/1pQ1P3/p4R1K/2R5 w - - bm Rg2; c0 "exeComp-Arasan, FICS 2018";
7r/4qpk1/r2p3p/1p1Bp1p1/pPP1PnP1/P3Q2P/5P1K/1R1R4 b - - bm h5; c0 "Arasan-acgs, ICC 2018";
8/4qpk1/P2p4/3Bp1p1/pP2P1p1/P6n/5P1K/1R1R4 w - - bm Rg1; c0 "Arasan-acgs, ICC 2018";
r1r3k1/1q1bbpp1/1p2p2p/2npP3/3B1PN1/p1P1QR2/PP2B1PP/3R2K1 w - - bm Rh3; c0 "BlackDemon-Arasan, FICS 2018";
r2qk2r/pp2n1b1/3p1pp1/2p1p2p/2N1P3/2NPBbP1/PPPQ1P1P/R4RK1 w kq - bm h3; c0 "Arasan-khadem, FICS 2018";
b2r2k1/6b1/2p3Q1/ppN5/1q1P4/5PP1/1P4K1/3R4 b - - bm Rf8; c0 "SlowBox-Arasan, IFCS 2018; am Qxb2+"
4rn1k/pp1r3p/1n1p4/2p2PP1/4p1N1/3qB2Q/Pb1N3R/5R1K w - - bm Qh5; c0 "SugaR XPrO 1.5.3-Fire 7.1, Super Tournament XXXI 2018";
3q3k/6rp/Pb2p3/3pPp1Q/2n3r1/1R1N2P1/5PK1/2B4R w - - bm Bh6; c0 "Xiphos 0.4-Deep Shredder 13, Andreas Strangmueller 2018";
2rqkb1r/1pp1p1pp/1p3p2/1N1P4/5B2/5Q2/PP3PPP/n1R3K1 w k - bm Nxc7+ Qg4; c0 "Fizbo 2-Xiphos 0.4, Andreas Strangmueller 2018";
6k1/1p4Pp/1p6/1P2B3/P3nP2/5RP1/3r3P/2r2BK1 b - - bm h5; c0 "Arasan-Coolnite7, ICC 2018";
r2q1r2/3nbk2/2p1p3/pbP2pp1/3P4/1P1NpPP1/R3P1B1/2BQ1RK1 b - - bm f4; c0 "Komodo MC 2199-Lc0 0.19.0, CCC 3: Rapid Redux, chess.com 2018";
4b3/4kp1p/2pq1p2/p3pQ2/2B1P2P/5RP1/Pr1r1PK1/2R5 b - - bm h5; c0 "Laser 191118-Ethereal 11.13, CCC3 Rapid Redux, chess.com 2018";
1n1q2k1/3r1pp1/5n2/p1b5/2B2P1p/2N1P1Pb/PPN1Q2P/R1B3K1 b - - bm Nc6; c0 "Arasan CCC3-1 - lcZero, FICS 2018";
br1r2k1/5pp1/R6p/2pN4/P1P1q3/2P1p1P1/P3P2P/3RQ1K1 b - - bm Qxc4; c0 "Deep Shredder 13-Komodo 12.2.2, Andreas Strangmueller 2018";
r4nk1/1p1rqp1p/2bNp1pP/3pP3/BR3QP1/P4R2/5P2/6K1 w - - bm Bxc6; c0 "Stockfish 18112008 - Xiphos 0.4.11, CCC 3: Rapid Redux 2018";
#4 r1r3k1/1q1bbpp1/1p2p2p/2npP3/3B1PN1/p1P1QR2/PP2B1PP/3R2K1 w - - bm Rh3; c0 "BlackDemon-Arasan, FICS 2018";
b3 is very close to Rh3 and should be consider as a good move :
Code: Select all
Stockfish_18112915_x64_modern:
...
30/49 01:45 860 204 174 8 143 405 +3,67 1.Rh3 Ba4 2.b3 Bxb3 3.axb3 a2 4.Ra1 Kf8 5.Bd1 Ra3 6.Qe2 Nxb3 7.Bxb3 Rxb3 8.Rxa2 Bc5 9.Ne3 Qc6 10.Qc2 Bxd4 11.Qxb3 Bxc3 12.Rc2 b5 13.Nf5 b4 14.Rhxc3 bxc3 15.Nd6 Ra8 16.Rxc3 Qa6 17.Rc1 Kg8 18.Qe3 Qa7 19.Qxa7
30/46 01:45 860 204 174 8 143 405 +3,68 1.b3 Rc6 2.Rh3 Bf8 3.Qg3 Kh8 4.f5 Ne4 5.Qf4 exf5 6.e6 f6 7.exd7 Qxd7 8.Nxh6 gxh6 9.Bb5 Rac8 10.Rf1 Qe6 11.Bxc6 Rxc6 12.Re3 Kh7 13.Qxf5+ Qxf5 14.Rxf5 Bc5 15.Rxd5 Bxd4 16.Rxd4 f5 17.c4 b5 18.g4 Rg6 19.Rd7+ Kh8 20.Rd8+ Kg7 21.cxb5 Rxg4+ 22.Kf1 Rf4+ 23.Ke1 Rf2
#9 2rqkb1r/1pp1p1pp/1p3p2/1N1P4/5B2/5Q2/PP3PPP/n1R3K1 w k - bm Nxc7+ Qg4; c0 "Fizbo 2-Xiphos 0.4, Andreas Strangmueller 2018";
This position was posted last week here.
#12 4b3/4kp1p/2pq1p2/p3pQ2/2B1P2P/5RP1/Pr1r1PK1/2R5 b - - bm h5; c0 "Laser 191118-Ethereal 11.13, CCC3 Rapid Redux, chess.com 2018";
around 15 sec on 6*4GHz
#14 br1r2k1/5pp1/R6p/2pN4/P1P1q3/2P1p1P1/P3P2P/3RQ1K1 b - - bm Qxc4; c0 "Deep Shredder 13-Komodo 12.2.2, Andreas Strangmueller 2018";
Nice (and hard) position.
#15 r4nk1/1p1rqp1p/2bNp1pP/3pP3/BR3QP1/P4R2/5P2/6K1 w - - bm Bxc6; c0 "Stockfish 18112008 - Xiphos 0.4.11, CCC 3: Rapid Redux 2018";
Nice position. Bxc6 is superior but Bb5 and Be2 seems winning also.
Code: Select all
1) Rf2-g2 Rf2-g2 * 0 Sec Rf2-g2 * 16 Sec Rf2-g2 * 0 Sec
2) .. h6-h5 h6-h5 * 0 Sec h6-h5 * 0 Sec h6-h5 * 0 Sec
3) Rd1-g1 Rd1-g1 * 0 Sec Rd1-g1 * 0 Sec Rd1-g1 * 0 Sec
4) Rf3-h3 b2-b4 b2-b3 Rf3-h3 * 20 Sec
5) h2-h3 h2-h3 * 0 Sec h2-h3 * 0 Sec h2-h3 * 0 Sec
6) .. Rd8-f8 Rd8-f8 * 0 Sec Rd8-f8 * 0 Sec Rd8-f8 * 0 Sec
7) Qh3-h5 Qh3-h5 * 0 Sec Qh3-h5 * 0 Sec Qh3-h5 * 1 Sec
8) Bc1-h6 Bc1-h6 * 0 Sec Bc1-h6 * 0 Sec Bc1-h6 * 0 Sec
9) Nb5xc7, Qf3-g4 Nb5-a7 Qf3-e4 Nb5xc7 * 4 Sec
10) .. h7-h5 h7-h5 * 0 Sec h7-h5 * 3 Sec h7-h5 * 5 Sec
11) .. f5-f4 f5-f4 * 0 Sec f5-f4 * 1 Sec f5-f4 * 0 Sec
12) .. h7-h5 h7-h5 * 15 Sec h7-h5 * 13 Sec h7-h5 * 12 Sec
13) .. Nb8-c6 Nb8-c6 * 0 Sec h4xg3 Nb8-c6 * 0 Sec
14) .. Qe4xc4 Ba8xd5 Ba8xd5 Ba8xd5
15) Ba4xc6 Ba4-c2 Ba4-b5 Ba4-b5