ShashChess

[CornfedForever]

In Shashin's book, the mathematical formulas are clear except for safety for which very rough heuristics are given.
Therefore, applying such theory tout court is definitely not the way to go.
Therefore, we have proceeded in reverse: using Stockfish's evaluation function to classify positions according to Shashin and direct both the research and the classical evaluation itself.
Clearly, this is all but trivial, e.g., figuring out how and where to update Shashin values...

"tout court" ?

[Vinvin]

In Shashin's book, the mathematical formulas are clear except for safety for which very rough heuristics are given.
Therefore, applying such theory tout court is definitely not the way to go.
Therefore, we have proceeded in reverse: using Stockfish's evaluation function to classify positions according to Shashin and direct both the research and the classical evaluation itself.
Clearly, this is all but trivial, e.g., figuring out how and where to update Shashin values...

"tout court" ?

means "in short", "no more".

[peter]

"tout court" ?

means "in short", "no more".

Hi Vincent!
Had the 128 positions revised again.

Code: Select all

1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+; hmvc 0; id "HTC108, 2._Corbit, Dann_Tactical Insanity Nr.1, 1";
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+; hmvc 0; id "TacticalInsanityNr.9_CorbitD_HTC108-5 S, 2";
1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - bm g4; hmvc 0; id "Carlsen, M._Caruana, F._HTC108-7 WM2018, 3";
1r1rb1k1/5ppp/4p3/1p1p3P/1q2P2Q/pN3P2/PPP4P/1K1R2R1 w - - bm Rxg7+; hmvc 0; id "ACT-Suite, Nr.12_Dorsz, OpenChess_HTC108-8, 4";
1r2kb1r/p5p1/1np1p1N1/3pPnB1/1p1P2B1/qP6/2PQ1P1P/1K1R3R b k - bm Nc4; hmvc 0; id "van Foreest, J._L'Ami, E._HTC108-9 Zug 24...Sideline, 5";
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+; hmvc 0; id "Konig?, CCC._Cornforth96?, CSS+Playchess_HTC108-11 Arasan, 6";
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5 Nf6+; hmvc 0; id "PoorFish, CostalbaM_Borderline, Dual_HTC108-12, 7";
1rb1qrk1/2b2pp1/p3pBn1/3pP1Pp/1ppP4/2P1QN2/PP3P1P/R2BR1K1 w - - bm Nh4; hmvc 0; id "LC0, CCC._SF, CSS._HTC108-15 S, 8";
2bk2r1/5q2/1p2pP1Q/pP1pP1P1/P2P4/8/2RK4/8 w - - bm Kc1; hmvc 0; id "AlphaZero, HTC108-21._SF_Game9 2017, 9";
2q2r1k/p1p1b1pp/br1p1n2/2p1N1BP/Q1P1P3/8/PP1N1PP1/2KR3R w - - bm Ng6+; hmvc 0; id "Gashimov, V._Azariov, S._2011 HTC108-23, 10";
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4; hmvc 0; id "CorbitD, CCC+Rybkaf_?_HTC108-25, 11";
2r2rk1/2q2p1p/p1p1nPpQ/3p4/4p1B1/8/PPP3PP/R4R1K w - - bm Rf5; hmvc 0; id "Gusia_Barlov_Schweiz 1980 HTC108-28, 12";
2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - bm Bf4; hmvc 0; id "Bondarenko, &Kuznezov_Glarean, PoorStockfish_HTC108-29, 13";
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+; hmvc 0; id "Rudolph, W.E._?_Studie 1912 HTC108-30 S, 14";
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5; hmvc 0; id "Gusev, Y._Auerbach, E.25._HTC108-42, 15";
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+; hmvc 0; id "Van Essen, M._2004, #22._HTC108-48 (-9ZNr41) S, 16";
6k1/1qr1p2p/ppN5/3p1N2/6p1/1P1P2Pp/PP2PP1P/2RK4 w - - bm Ncxe7+; hmvc 0; id "Neghina, M._Stronghold, 2003?._HTC108-49 S, 17";
6k1/ppn2p2/8/2P2P1p/1P2K3/2N5/P7/8 w - - bm Nd5; hmvc 0; id "Tunik_Duzhakov_2011 HTC108-52, 18";
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+; hmvc 0; id "Neghina, M._Chase, Derived_HTC108-54, 19";
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4; hmvc 0; id "SolomonKing, ?CCC._2.g4, Hiarcs_HTC108-80 S, 20";
r3r1k1/pp1q1p2/2p2npb/PPPp1bnp/3PpN2/2N1P1PP/1R1B1PBK/3Q1R2 b - - bm Bg4; hmvc 0; id "Nicolic, E._Fischer, R._HTC108-94 S, 21";
r5rk/1bq1bpp1/1p1ppn1p/pP5P/2P1P3/P1N2P2/1B1Q1P2/1K1R1BR1 w - - bm Nd5; hmvc 0; id "Morozevich, A._Vitiugov, N._Reggio 2011 HTC108-100, 22";
3q3N/1p5k/5B2/8/1p2p1Rp/1P5K/p3PP2/8 w - - bm Rg7+; hmvc 0; id "M. Garcia - P. Krug, Studie 2015_Glarean_The Engine Crackers, 23";
k7/7p/2p5/2rp1PP1/pp6/7p/5K1P/4R3 w - - bm g6; hmvc 0; id "Zepler, E.E._Studie, 1928._?, 24";
5N1n/3P1p1p/5P1k/1Pp1P2p/4KP1P/2p5/p4b2/5N2 w - - bm Ne3; am d8=Q; hmvc 0; id "Formela, Michal_Studie, 2019._Polski Zwiazek Szachowy, 25";
r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - bm Rxd7; hmvc 0; id "Stoofvlees_SF_TCEC 2019, 26";
8/1pp2k2/p2p3p/3n1KP1/5P1P/8/1P1B4/8 w - - bm Ke4; am h5; hmvc 0; id "Lasker, Emanuel_Lipke, Paul_Nebenvariante 41.Ke4! MS, 27";
1r1q1r1k/5pp1/3p1b2/pp1BpPB1/1n2P1QP/1PN5/1PPK4/R7 w - - bm Ne2; hmvc 0; id "Los, Andrii_Kubicki, Tadeusz_corr LIPEAD40 (PER), 28";
r1b2rk1/pp3p2/2p3pp/2n5/8/q3RN2/P4PPP/2RQ1BK1 b - - bm Qa4; am Qa5; hmvc 0; id "PurePower_Exxon_Chessbase online, 29";
r2n1r1k/1pp5/3ppn2/P2Pp2p/2P1P1pq/1Q2R2P/R2N1PP1/4N1K1 w - - bm g3; am Ra3; hmvc 0; id "Bauer, Robert_Zhak, Boris Mikhailovich_WC30/final, 30";
2b5/1pr4p/3bp1pk/1p6/1PpN2PP/K1P1n3/P3N1R1/3R4 w - - bm Nxb5 Rgg1; hmvc 0; id "Mihai Neghina_Desperation_White to move and draw S, 31";
3r2k1/p4pP1/1ppr4/5Bp1/P2qPnQP/4R3/5P2/5RK1 w - - bm e5; am hxg5; hmvc 0; id "Tauber, Hans_Sikorsky, Horst_37.e5!, 32";
1q6/4p3/6Q1/2N1n3/p2P2P1/P2PP1k1/4Kp1p/2B5 w - - bm Ne4+; hmvc 0; id "Bondarenko+Gorgiev, Studie1959_BrillanterSchachzug, 17._?, 33";
7k/Bp1R1b1p/1p2pK1n/8/4P1P1/6pB/4p3/8 w - - bm Bb8; hmvc 0; id "ACT3, ??._Festung_S, 34";
5N2/rp6/pB1p1N2/pb2k1K1/3p2p1/1R2pp2/4B1n1/6bn w - - bm Rc3; hmvc 0; id "ACT3, ??._Studie?_?, 35";
Q3b3/1p2q3/1p6/bp5P/1p6/1p6/1P1N1PPp/4NK1k w - - bm Qd8; hmvc 0; id "ACT3, ??._?_?, 36";
7r/p2b4/rp2p2p/kB6/8/2K5/1P6/4R3 w - - bm Re5; hmvc 0; id "ACT3, ??._Festung_?, 37";
8/qpp5/8/k1p1N3/2p5/P7/1PP1B3/K7 w - - bm Nc6+; hmvc 0; id "ACT3, ??._Festung_S, 38";
8/2q1k3/5N2/1p1P3N/p7/2P5/PBK5/8 w - - bm d6+; hmvc 0; id "ACT3, ??._Studie?_?, 39";
5k1r/7p/2p3P1/2p5/1p4PK/p6R/7P/4B3 w - - bm Kg5; hmvc 0; id "ACT3, ??._Studie?_S, 40";
3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - bm Nd4; hmvc 0; id "Neghina, M._GoldenerKäfig, 2009._S, 41";
4knQ1/7r/3p2p1/2bP1pP1/5P1N/6K1/8/8 b - - bm Rxh4; hmvc 0; id "Ree, H._Hort, V._Wijk 1986, 42";
4q1kn/2Bp1p2/1N1PpPp1/1P2P1P1/2N3b1/6p1/1P4Pb/7K w - - bm Na5; hmvc 0; id "Neghina, M._WhieTo, MoveAndWin_2018? S, 43";
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+; hmvc 0; id "Popov, Study_Glarean 2006, 1996?._HTC108-58, 44";
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6; hmvc 0; id "Sikorsky, Horst_Novak, Joze_Sideline, 45";
8/5p2/1p1r2p1/1p1p1R2/1P3KN1/8/7p/3N2kr w - - bm Re5; hmvc 0; id "Krug, P._CCC, Paloma_S, 46";
8/3p4/p2kp1N1/p1r4p/P6P/5RK1/8/8 w - - bm Kf4; hmvc 0; id "TCEC, Sammlung_Nr.8, j329_CCC, 47";
r2qr1k1/1b1n1pbp/pp2p1p1/7P/1B1PP3/R2BQN2/5PP1/1R4K1 w - - bm h6; hmvc 0; id "TCEC, Sammlung_Nr.22, rj329_CCC, 48";
r1bqkb1r/3n1ppp/p3p3/8/Pp1B1n2/3B1N2/1P1NQPPP/R2R2K1 w kq - bm Qe1; hmvc 0; id "Sikorsky, Horst_Vinchev, Simeon_corr GER, Hiarcs, 49";
r5b1/7P/p7/2B4p/rp6/4N1P1/p2R4/1k1K4 w - - bm Rb2+; hmvc 0; id "Zemljanski, Y.I._1move, cut_Tsjechover-90 S, 50";
3rqQ2/3ppppp/7k/R7/8/8/1PPP2K1/8 w - - bm Ra3; hmvc 0; id "Study, ?._?_IQ 100, 51";
7k/1p2B2p/1P2K1p1/3p3P/8/4b1P1/1pP2N2/8 w - - bm Kf7; hmvc 0; id "Study?, ?._?_ACT3, 52";
1K6/RP3pk1/4p3/2rbP1P1/8/8/P7/8 b - - bm Rc2; hmvc 0; id "Study?, ?._?_TTT2 31, 53";
r1q3rk/p1p3b1/3p1nn1/2PPp2p/1P2Ppp1/2NN1P2/6PP/R1BQ1R1K b - - bm gxf3; hmvc 0; id "Semenikov+, D A._Sikorsky, H._corr. USA 2021, 54";
r1bq2rk/ppp5/3p1nnb/P1PPp1pp/1P2Pp2/2N2P2/3BBNPP/R2Q2RK b - - bm Qd7; hmvc 0; id "Petrov, M._Sikorsky, H._CL/2021, 55";
4k2q/p4p1B/1pp3pP/2N2pP1/2P2P1N/8/PP2P3/2K5 w - - bm Nxg6; hmvc 0; id "Study, ?._CCC_ACT5 11, 56";
5kbQ/pp4p1/n3p2p/3p2r1/7N/2PPP2P/PP3PP1/4n2K b - - bm Rxg2; hmvc 0; id "Study, ?._?_ACT5 29, 57";
8/p2p4/r7/1k6/8/pK5Q/P7/b7 w - - bm Qd3+; am Qf5+; hmvc 0; id "ERET 015_Endspiel D&B vs T&L&B_Becker 2015, 58";
8/7p/5P1k/1p5P/5p2/2p1p3/P1P1P1P1/1K3Nb1 w - - bm Ng3; am f7; hmvc 0; id "ERET 032_Zugzwang_Fahrni 1922, 59";
1k6/bPN2pp1/Pp2p3/p1p5/2pn4/3P4/PPR5/1K6 w - - bm Na8 Rf2; hmvc 0; id "ERET 037_Zugzwang_Garcia 2000, 60";
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; am hxg5; hmvc 0; id "ERET 046_Endspiel T&S vs T&S_Grandelius-Raznikov, Albena 2011, 61";
r4r1k/p1p3bp/2pp2p1/4nb2/N1P4q/1P5P/PBNQ1PP1/R4RK1 b - - bm Nf3+ Kg8; hmvc 0; id "ERET 050_Koenigsangriff_Hansen-Barua, Biel 1993, 62";
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; am Kd7; hmvc 0; id "ERET 090_Endspiel L vs L_Salai 2011, 63";
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - bm Nd6+; am Rf3+; hmvc 0; id "ERET 093_Endspiel T&S&B vs T&T&L_Simkhovich 1923, 64";
2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - bm Rf6; hmvc 0; id "ERET 094_Damenopfer_Sirobaba-Chaika, CorrGame 2011, 65";
6bk/5pp1/3N1p1b/8/6pN/5pPp/4pP1P/4K3 w - - bm Ng6+; hmvc 0; id "Fortress, Study?_?_ACT3-51 S, 66";
4rkr1/1b2np2/q4Bp1/6P1/2Q5/pP6/K1P3B1/2R5 w - - bm Bxb7; hmvc 0; id "ACT4, Nr.1_?_ACT4-1, 67";
8/8/p2B1R2/Pp2K3/1Pp3pp/2P3pq/4P1kp/7b w - - bm Bb8; hmvc 0; id "Cyclic, ZZ?._?_ACT5-25 2, 68";
k1b5/1p1p4/p1bP4/PP6/8/6N1/8/K7 w - - bm b6; hmvc 0; id "Blass, U.._CCC_ACT5-27 2, 69";
3n3k/8/6PK/5PP1/1b5p/2pp4/1qP5/Q7 w - - bm g7+; hmvc 0; id "Campioli, M._#14, ?._ACT5-28 2, 70";
5q2/1p6/P5p1/1P1p1pPk/B1p5/2N1pPP1/4P1K1/8 w - - bm f4; hmvc 0; id "Krug, P._?_ACT5-30 2, 71";
5rk1/5p2/5R2/6PK/2b1N3/3N4/pQnp3n/8 w - - bm Rf1; hmvc 0; id "KrugP, Garcia_HHdbVI.0044383.001, a.01968?_ACT5-31 1, 72";
8/8/p1Kp4/k6p/B1P2N1P/1R6/P7/3q4 w - - bm Ra3; hmvc 0; id "Kos, V._?_ACT5-34 2, 73";
Q2q3r/4kp1n/pP2P1pp/3Pp3/K3B3/1PP4P/1P2r3/4B3 w - - bm Qa7+; hmvc 0; id "Sokka, H._HHdbVI.1076075.001, a.53387?_ACT5-36 1, 74";
rb6/k1p1n3/P5Q1/1K3p2/3p4/6B1/6p1/8 w - - bm Qc6; hmvc 0; id "Sehwers, J?._HHdbVI.1643584.002a., 89051?._ACT5-ana, 75";
8/p1p1p1P1/P1P1P3/7p/8/P2p1K1P/pp1p4/krbB4 w - - bm g8=N; hmvc 0; id "Zinar, M._HHdbVI.0210037.002a., 09076?._ACT5-44 2, 76";
8/1p3p2/8/1P1NP3/B4K2/1R6/p1Pp4/2k5 w - - bm Nb4; hmvc 0; id "Nestorescu, V._HHdbVI.0708805.002a., 33432?._ACT5-46 1, 77";
3r4/1K3p1p/3P1p2/3k1P2/3B4/1P6/1P3P1P/8 w - - bm Bc5; hmvc 0; id "Timman, J._HHdbVI.0033988.002a., 01480._ACT5-48 2, 78";
8/1p6/p4N2/q6p/Pp1kp3/1P3P2/3K2P1/2R5 w - - bm f4; hmvc 0; id "Unknown, Author_?_ACT5-51 2, 79";
2r3bq/3N1prk/5Pp1/6P1/3P3B/RP2P1P1/6K1/8 w - - bm Ra4; hmvc 0; id "Ivanov, V._?_ACT5-53 2, 80";
1b6/2P5/8/kP1P4/p7/P4p2/5Kpp/6B1 w - - bm cxb8=B; hmvc 0; id "Bernhardt, G._?_ACT5-58 2, 81";
5b2/4p1p1/p2pP1P1/P3P3/4P1N1/5KP1/4p1pP/4Bbrk w - - bm Kf4; hmvc 0; id "Unknows, Author_?_ACT5-61 2, 82";
6k1/6pp/3K2b1/6P1/4p2P/7P/P7/1B6 w - - bm h5; hmvc 0; id "Naef, W._?_ACT5-63 2, 83";
K6n/1BR1p1N1/1P1kP1br/3pnp1q/p2P4/r1p4p/P7/2b1B3 w - - bm Bg3; hmvc 0; id "#7, ?._?_ACT5-67 2, 84";
8/K3p3/5q2/5b2/1Np5/Bp6/p3Q3/k7 w - - bm Qf1+; hmvc 0; id "#9, ?._?_ACT5-68 2, 85";
6B1/6K1/8/8/7N/8/P1PkN1pp/8 w - - bm Ng1; hmvc 0; id "SilhanJ, ZizkaL_?_ACT5-59 3, 86";
r6k/p2b2pp/q1n1p2n/3pPpB1/2pP4/2P2NQ1/2P1BPP1/1R4K1 w - - bm Bf6; hmvc 0; id "Hiarcs, ?._?_TTT2 2, 87";
2bq1rk1/p1n1b1p1/1r5p/3pPp2/2pP1B1P/2P4N/P1B1QP2/2K3RR w - - bm Rg3; hmvc 0; id "Hiarcs, ?._?_TTT2 6 2, 88";
1B2b2k/7q/4n2p/3Np1PQ/8/1p6/5N1P/1K1B4 w - - bm g6; hmvc 0; id "Derived, from_StavrietskyA, 2017._TTT2 14, 89";
2Br1r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 b - - bm bxc4; hmvc 0; id "Midgame, ?._?._TTT2 23, 90";
rnbq3r/1p2b1k1/2pp1p1p/pP3pp1/2BP3N/P3P3/2P2PPP/RN1Q1RK1 w - - bm Ng6; hmvc 0; id "TTT2.053_?_TTT2, 91";
5qk1/pp4p1/4ppp1/2Q3P1/7P/P1P5/1P4P1/6K1 w - - bm Qxf8+; hmvc 0; id "TTT2.073_?_TTT2, 92";
6Bq/5pkp/4P2p/1nN1KP1P/7P/8/8/8 w - - bm f6+; hmvc 0; id "RoxlauM, GrushkoM_HHdbVI_ACT4 4 1, 93";
8/5bb1/N1r2k2/3p1p1p/p1pPpP2/PpP1P2P/1P5P/6RK w - - bm Nb8; hmvc 0; id "Smyslov, V._?_ACT4-26 1, 94";
8/8/3k2p1/5ppb/3P4/1P6/1P3NP1/4K3 w - - bm g4; hmvc 0; id "Smyslov, V._?_ACT4-41 1, 95";
2n3B1/6p1/2P2p2/1p3P1p/1p1nK2P/3P4/4N2p/7k w - - bm Ke3; hmvc 0; id "JostenG_?_?, 96";
7k/pp1pBp1N/1p3Pp1/b3K1PR/P3P2p/2R4P/2P1N1P1/q7 w - - bm Kd6; hmvc 0; id "Study, ?._?_ACT4-59, 97";
2q1k1b1/7p/4p1r1/Pp1pP2Q/1P1P2PB/2P5/1KP5/8 w - - bm Qxg6+; hmvc 0; id "Wotawa, A._?_ACT4-66 1, 98";
8/5P2/Np1q1k2/8/p1pP3P/2P2P2/P7/1KB5 b - - bm a3; hmvc 0; id "Study, ?._?_ACT4-90 1, 99";
8/1p1k4/1Pp1p3/2P1p2N/4K1p1/p5N1/8/8 w - - bm Kd3; hmvc 0; id "Bethge, F._?_ACT4-91, 100";
2K5/p1p4k/p1p5/2p3p1/6Pb/6p1/p5P1/B7 w - - bm Kd8; hmvc 0; id "Blathy, O._?_ACT4-94 1, 101";
4K3/1B1p4/pn1Npb2/k3p3/P1pn4/P7/7B/3N4 w - - bm Bc6; hmvc 0; id "Cortlever, N._HHdbVI_ACT3-29 1, 102";
n6r/b7/1R4R1/2k5/2pppppp/8/1PPPPPP1/r4NK1 w - - bm b4+; hmvc 0; id "Korolkov, V._?_ACT3-38, 103";
b1K2b1n/p1BNp2r/3pP1Nr/PB1Pppp1/Pk2P2n/8/PP6/8 w - - bm a6; hmvc 0; id "Fortress, ?._?_ACT3-41 1, 104";
2K3b1/8/pPP1p1P1/2p1k2N/2P1pN1P/6PP/n1pQ2p1/1q3r2 w - - bm Kc7; hmvc 0; id "Unknown, Author_?_ACT3-48, 105";
5N1r/5n1n/ppp3R1/5K2/7k/6p1/6PN/8 w - - bm Rg4+; hmvc 0; id "Kraemer, A._?_ACT3-49, 106";
8/6Qp/p5pP/P2n4/8/5p2/p2K1P2/1k2Bb2 w - - bm Qa1+; hmvc 0; id "Sivkov, N._#10, ?._ACT3-88, 107";
5B2/1p1nNp2/8/1P2R3/3p3q/8/p1K1P1Q1/k3b3 w - - bm Ng6; hmvc 0; id "Timman=J_Glarean, Nightmare_?, 108";
1r3rk1/6p1/p1pb1qPp/3p4/4nPR1/2N4Q/PPP4P/2K1BR2 b - - bm Rb7 Rxb2; hmvc 0; id "Boudy Bueno, J.L.._Szabo, L._Varna 1979  Txb2!? Eret 17, 109";
r1bqk1nr/pp1pnppp/1bp5/1B6/3PP3/5N2/PP3PPP/RNBQ1RK1 w kq - bm d5 Bd3; hmvc 0; id "Lc0-dev_Stockfish_ECO MegaMatch II! (1|1), 110";
2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - bm Bxf7; hmvc 0; id "Carlsen, M._L'Ami, E._Corus B VLH16 35, 111";
nq6/pPpB4/2K5/1P2BN2/3Pk2p/5p2/8/6bN w - - bm b6; am Bc8; hmvc 0; id "Bazlo, Yuri_10moves, less_2019 HHdbVI 1, 112";
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3 Nf6+; hmvc 0; id "Opening, Hiarcs_!, ?!._?, 113";
r4rk1/ppp1bppp/2p5/4P3/8/1q2B3/PPPR1PPP/3R2K1 w - - bm cxb3 axb3; hmvc 0; id "TCEC, rj329_?_CCC, 114";
r1b5/1pk2pr1/1Rp1p1q1/p1PpPp1p/P2P1Q1P/4P1P1/4B1K1/3R4 w - - bm e4; hmvc 0; id "TCEC, rj329_?_CCC Nr.5, 115";
3r1r2/pb2nkp1/1pnb1p1p/2pNpP2/q1P1P1PP/3P1N2/P3BR2/3RQ1BK w - - bm g5 Qf1; hmvc 0; id "Gleichmann, Matthias_Praznik, Niko_corr CT21/final, 116";
8/3p4/p3b3/P4p1p/4pP1P/2pP2Np/Q2P2kp/2N1K3 w - - bm Qb1; hmvc 0; id "Yarmonov, I._Glarean_2020, 117";
2r1r3/1p2qppk/1Ppp1nnp/p3p3/P1PPP3/2NBPR1P/6PK/3Q1R2 w - - bm Ne2 Rxf6; hmvc 0; id "Eman_SugaR_Glarean, 118";
7k/p1pp2pp/1p1p4/8/2P2B1R/q1PP4/8/3R2K1 w - - bm Rf1; am Bd2; hmvc 0; id "Hobacle's, VersionOf_Walter Eigenmann's, Study_?, 119";
r1n5/k3pp2/2Rr4/1p6/1p6/p4pp1/QP4Pn/4RBK1 w - - bm Rec1; am Rc2; hmvc 0; id "Krug, P.._Glarean, EngineCrackers2_2018, 120";
r1bqr1k1/pp1nb1p1/2n3P1/3pPp1p/1p1P3P/P4N2/3N1P2/RBBQK2R w KQ - bm Ng5; am Nb3; hmvc 0; id "Gniazdowski, Marian_Rau, Johann_corr CL/2019/C8 Glarean, 121";
1r6/1n1R1b2/8/1p1p3k/pPpPp1p1/2P1P3/P2K1PP1/8 w - - bm Rxb7; am Rxf7; hmvc 0; id "Illescas, Miguel_Glarean, EngineCrackers_?, 122";
2k5/1p3pp1/p1p1p1p1/2P1P1P1/PP1P1P1P/K7/8/8 w - - bm f5; hmvc 0; id "Heinz, J._Glarean_Study 1981, 123";
7k/pp1pBp1N/1p3Pp1/b3K1PR/P3P2p/R1n4P/2P1N1P1/3q4 w - - bm Rxc3; am Nf8+; hmvc 0; id "Josten, G.._Glarean, EngineCrackers_Studie 2001, 124";
rb2n3/p3B3/1P5p/2P4K/5k2/1r4p1/3R2R1/8 w - - bm Rxg3 Rxg3; hmvc 0; id "Timman, J.._HHdbVI_?, 125";
8/1p4p1/1Np2pP1/1p6/6P1/P2kP1PK/P2P4/2b5 w - - bm Na8; hmvc 0; id "Gelly, M.._HHdbVI_Glarean, 126";
6K1/5p2/6p1/1N2qk1p/p6R/7P/Pp2N3/2B5 w - - bm Ned4+; hmvc 0; id "Krug, P._HHdbVI, Glarean_?, 127";
7k/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/4K3/2N5 w - - bm Kd2; am Na2; hmvc 0; id "Ganguly, S._RuszA, correction_HHdbVI, 128";

With 30 threads of a 16x3.5GHz CPU and a 3070ti GPU, 15"/position, mainly at MultiPV=4 (engines without the corresponding mark "MV4" in name in list ran single primary, e.g. LC0 and Ceres not profiting from MultiPV, Koivisto not being able to use it, some others just to show how much gain there is for them with more primaries, Sting so far being the only one solving more single- than multi- primary, Eman's FAD=Full Analysis Depth, HypnoS is Marco Zerbinati's private engine),
I get this one EloStatTS- (Frank Schubert) ranking and rating- list with ShashChess' latest and one but latest version being left in list just for direct comparison:

Code: Select all

    Program                                    Elo   +/-  Matches  Score   Av.Op.   S.Pos.   MST1    MST2   RIndex

  1 CorChess3300522-Tactical-MV4             : 3575    7   2406    61.7 %   3492    85/128    3.3s    7.2s   0.60
  2 BlueMarlin15.3-avx2-MV4                  : 3573    7   2340    61.3 %   3493    82/128    3.1s    7.4s   0.60
  3 ShashChess24-GoldDigger-MV4              : 3564    7   2312    60.1 %   3493    80/128    3.6s    7.9s   0.58
  4 Crystallite1.1a-bmi2-ContMax-MV4         : 3558    7   2361    59.1 %   3495    79/128    3.7s    8.0s   0.53
  5 ShashChess23.1.1-GoldDigger-MV4          : 3558    7   2249    59.2 %   3493    80/128    3.7s    7.9s   0.55
  6 HypnoSFmpv110822-MV4                     : 3558    7   2286    59.1 %   3494    77/128    3.2s    7.9s   0.52
  7 TheHuntsman1bmi2-MV4                     : 3546    8   2290    57.2 %   3496    72/128    3.3s    8.4s   0.48
  8 Swordfish15.3a-bmi2-MV4                  : 3544    7   2252    57.0 %   3495    76/128    4.2s    8.6s   0.50
  9 EMAN8.2064-bitAVX2-MV4                   : 3541    7   2253    56.6 %   3495    74/128    4.2s    8.8s   0.47
 10 EMAN8.2064-bitAVX2-FAD15                 : 3534    7   2299    55.6 %   3495    81/128    6.1s    9.4s   0.39
 11 TheHuntsman1bmi2-MateSearch              : 3533    9   2152    55.2 %   3497    62/128    2.2s    8.8s   0.48
 12 Stockfish310722-MV4                      : 3528    8   2144    54.5 %   3496    68/128    4.2s    9.3s   0.44
 13 Sting28                                  : 3493    9   2020    48.5 %   3503    52/128    3.9s   10.5s   0.33
 14 Ceres0.97RC3-784038                      : 3489    9   1970    47.7 %   3505    49/128    3.3s   10.5s   0.34
 15 Stockfish310722                          : 3482    8   1990    47.2 %   3501    55/128    5.6s   10.9s   0.29
 16 Sting28-MV4                              : 3474    9   1911    45.5 %   3505    45/128    3.3s   10.9s   0.30
 17 Lc0v0.30.0-dev-784038                    : 3471    9   1915    45.0 %   3506    44/128    3.7s   11.1s   0.30
 18 Dragon3.1byKomodoChess-MV4               : 3467    9   1886    44.6 %   3505    47/128    4.7s   11.2s   0.29
 19 Dragon3.1byKomodoChess                   : 3441    9   1795    40.5 %   3508    39/128    5.0s   12.0s   0.25
 20 SlowChessBlitz2.9avx2-MV4                : 3441    9   1792    40.7 %   3506    43/128    6.1s   12.0s   0.23
 21 Dragon3.1byKomodoChess-MCTS-MV30         : 3435    9   1801    39.5 %   3509    37/128    4.0s   11.8s   0.14
 22 Ethereal13.75(NNUE)-AnalysisMode-MV4     : 3426    9   1745    38.4 %   3509    34/128    4.3s   12.2s   0.22
 23 Berserk20220725-MV4                      : 3423    9   1735    37.9 %   3508    35/128    4.8s   12.2s   0.19
 24 RubiChess20220813(bmi2)-MV4              : 3413   10   1732    36.4 %   3510    29/128    3.4s   12.4s   0.19
 25 Koivisto8.13                             : 3382   10   1657    32.2 %   3512    22/128    3.4s   13.0s   0.13
 26 Revenge3.0b-MV4                          : 3368    9   1739    30.5 %   3511    30/128   12.4s   14.4s   0.03



MST1  : Mean solution time (solved positions only)
MST2  : Mean solution time (solved and unsolved positions)
RIndex: Score according to solution time ranking for each position

[Jouni]

My test with 110 HTC positions: ShashChess24 (GoldDigger) solved 78 time 41m25. Comparison ShashChess 21 (Tal) solved 91 time 35m35s .

[amchess]

https://github.com/amchess/ShashChess/wiki/Matches
https://github.com/amchess/ShashChess/wiki/Battery
https://github.com/amchess/ShashChess/w ... te-results

[peter]

https://github.com/amchess/ShashChess/wiki/Matches
https://github.com/amchess/ShashChess/wiki/Battery
https://github.com/amchess/ShashChess/w ... te-results

Hi Andrea!
See you're working with EloStatTS too, that helps a lot, doesn't it?
Thanks for sharing the results and the test postions, just to tell, just now the link at the Battery- site
(260)
https://github.com/amchess/ShashChess/b ... tEpdCA.epd
doesn't work, (404 page not found) guess it's about the same collection you gave in Hard Talkchess- Thread and it's probably under revise?

Best wishes for that and best regards

[amchess]

yes it helps
Sorry for the link. Now corrected:
https://github.com/amchess/ShashChess/b ... ns2022.epd

[peter]

yes it helps
the link on the site works:
https://github.com/amchess/ShashChess/b ... tEpdCA.epd

Thanks for prompt answer.
Not at my laptop with Windows 10 and Chrome, next one link gives error 404 too.

The 'amchess/ShashChess' repository doesn't contain the 'tests/HardPositions/inputEpdCA.epd' path in 'master'.

Will give it a try again tomorrow with another one browser and PC.

Edit: 260- link from battery- site at a second one try right now did work already.
Thanks again, regards

[Eduard]

Hello Andrea, I'm not happy with the Shashchess evals. Cannot trust such evals. At around +1 (shashchess) it's not clear enough if White can win this. But if Stockfish says +4, then it should be a clear win. There are many positions that Shashchess loses, because it shows less than +1 even though the position is lost. This is just an example from today:

Solista - floppy 1-0 0.0, Blitz 5' + 2'', Rated 2022
[fen]1r5r/2p3k1/p4p1p/5Pp1/3pP2P/P2P1P2/6KR/7R b - - 0 1[/fen]


Analysis by Shashchess 24-avx2:

36...Rb3 37.hxg5 fxg5 38.Rc1 Rc3 39.Rhh1 Rb8 40.Kg3 h5 41.Rcd1 Rh8 42.f4 g4 43.e5 Kf7 44.Kh4 Rf8 45.a4 a5 46.Rh2 Ke7 47.Kxh5 Rh8+ 48.Kg6 Rxh2 49.f6+ Ke6 50.f5+ Kxe5 51.Re1+ Kf4 52.f7 Rh8 53.Re8 g3 54.Rxh8 g2 55.Rh4+ Kf3 56.f8Q g1Q+ 57.Kh5 Ke2 58.Qe7+ Kd1 59.f6 Rc6 60.Qe5 Rd6 61.Rf4 Kc2 62.Qf5 Kc3 63.Rf2 Qd1+ 64.Kh6 Qxa4 65.Qc5+ Kxd3 66.Qc1 Ke4
+/- (1.10 --) Depth: 39/64 00:01:58 938MN, tb=677259
White is better

Analysis by Stockfish 270922:

36...g4 37.fxg4 c5 38.Rc1 Rhc8 39.Kf3 Rb3 40.Rd1 c4 41.Kf4 c3 42.g5 Rg8 43.Re1 Rb6 44.Rf2 Rb5 45.e5 hxg5+ 46.hxg5 fxe5+ 47.Rxe5 Rc8 48.Rc2 Rb1 49.Rd5 Kf8 50.g6 Rb2 51.Rc1 Rf2+ 52.Kg3 Rd2 53.f6 Rxd3+ 54.Kg4 Rd2 55.Rh1 Rg2+ 56.Kf5 Rf2+ 57.Ke5
+- (3.99 --) Depth: 36/56 00:02:11 1137MN, tb=962937
White is winning


PGN:

[Event "Blitz 5' + 2'', Rated"]
[Site "Infinity Chess"]
[Date "2022.10.01"]
[Round "?"]
[White "Solista"]
[Black "floppy"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2537"]
[BlackElo "2479"]
[PlyCount "115"]
[EventDate "2022.??.??"]
[EventType "blitz"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. O-O Nd7 7. Nbd2 O-O 8. Nc4 Re8 9. Bd2 b6 10. a3 f6 11. Nh4 Nf8 12. b4 Be7 13. Nf5 Ne6 14. Nxe7+ Qxe7 15. Ne3 c5 16. f3 Bd7 17. Rf2 Qd6 18. h3 h6 19. Kh1 Kh7 20. h4 Rad8 21. Qg1 Nd4 22. g4 Rh8 23. Qg3 g5 24. Rh2 Kg7 25. bxc5 bxc5 26. Qf2 Be6 27. Bc3 Qd7 28. Kg2 Qa4 29. Qd2 c4 30. Bxd4 exd4 31. Nf5+ Bxf5 32. gxf5 Rb8 33. dxc4 Qxc4 34. Rah1 a6 35. Qd3 Qxd3 36. cxd3 Rb2+ 37. Kg3 Rxh2 38. Rxh2 c5 39. Rb2 Rc8 40. Rb7+ Kf8 41. Rb6 Ke7 42. Re6+ Kf7 43. Rxa6 c4 44. dxc4 Rxc4 45. a4 d3 46. Rd6 Rxa4 47. Rxd3 Ra1 48. Rd7+ Kg8 49. Kg4 gxh4 50. Kxh4 Rh1+ 51. Kg4 h5+ 52. Kg3 Rg1+ 53. Kh2 Rb1 54. Rd2 Kf8 55. Kg3 Rg1+ 56. Rg2 h4+ 57. Kh3 Rh1+ 58. Rh2 1-0

[amchess]

New releases
https://github.com/amchess/ShashChess/releases/tag/25
https://github.com/amchess/BrainLearn/releases/tag/19