I have started a big clean up of this 223 positions.
I removed positions for some reasons and some other positions still pending (for some days) :
7 not good test positions, because
second move is close to the key move : numbers 47, 58, 63, 132, 135, 141 and 158 in the initial list
Code: Select all
2r3k1/1r3p2/1qb1pPpR/3pP1N1/p1pP4/PpP5/1Pn1BB1P/3R3K w - - bm Rg1;
3q4/4k3/1p1b1p1r/p2Q4/3B1p1p/7P/1P4P1/3R3K w - - bm b4; id "arasan19.120"; c0 "Stockfish 021113-Naum 4.6, nTCEC - Stage 4 - Season 2 2013";
3r2rk/5pp1/p2p1q1p/n1pPpP2/PpP1Q2P/1P3RR1/2B2PP1/6K1 w - - bm Rg5;
8/P5k1/P5p1/5pKp/4bP1P/6P1/5B2/8 w - - bm g4;
8/p4pk1/r1p1p1p1/P1PpRnPp/1P3P2/2P5/4RK2/8 w - - bm Rxf5;
k7/4r1p1/2p5/5P2/2P2N1P/8/K6P/8 b - - bm Re4;
r1b1r2k/pp1n1pp1/1qpb3p/8/3PB2B/5N2/PPQ2PPP/R3R1K1 w - - bm Bg6; c1 "diff=9";
3 key moves that
can be found by pure luck : numbers 95, 131 and 149 in the initial list
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6b1/5p2/1p3Bp1/1P3pP1/5P2/pp1B2K1/pr4P1/k7 w - - bm Kh2; c1 "diff=10";
8/8/8/2pK3p/8/5N2/1P4pq/5Rbk w - - bm Rb1; c1 "diff=8";
q7/b1p5/kp1p4/p2PN3/PPP5/1K6/8/5B2 w - - bm c5+; c1 "diff=7";
16 key moves
too easy to find : numbers 61, 62, 80, 81, 84, 90, 93, 102, 136, 157, 192, 195, 198, 203, 208 and 217 in the initial list
(I hold some other easy positions because in the past, some engines has trouble with them)
Code: Select all
3r2k1/p2prp1p/1p1Rn1pP/4P3/4q3/5RP1/P2Q1PK1/3B4 w - - bm Bb3; id "AlphaZero - Stockfish8";
3r2kq/p2prp1p/1p4pP/2nR4/1Q6/1B3RP1/P4PK1/8 w - - bm Rxc5 Qh4;
4r2r/pppkq1pp/2n1pn2/4p1B1/4N2Q/8/PPP3PP/4RRK1 w - - bm Nxf6+;
4rrk1/p1q1bpp1/b1n1p2p/1pppP1N1/n4B1P/3P2P1/PPP1QPBN/R3R1K1 w - - 0 1 bm Qh5;
5k2/8/5pK1/5PbP/2Bn4/8/8/8 b - - bm Bh4;
5rk1/1ppb1pb1/rq3np1/1NpPp2p/p1P1P1PP/P2BNPQ1/1P6/1K1R2R1 w - - bm Nf5;
5rr1/1p1bk3/p3pp2/8/3PP1pp/1PN1P3/1P3RPP/5RK1 w - - bm e5; c0 "MD vs JL, Chess Thinkers Forum 2015";
6q1/PpB5/k7/P6K/6n1/1P4p1/5p2/1B3N1N w - - bm a8=Q+ a8=R+;
8/p5pq/8/p2N3p/k2P3P/8/KP3PB1/8 w - - bm Be4;
r1b1r1k1/p2q1ppp/np2n3/3p1NBQ/8/6PB/P4P1P/1R2R1K1 w - - bm Bf6; c1 "diff=7";
r3r1k1/1bppq2p/1p1n1bp1/3P1p2/p4N1P/P1PB1P2/1P1Q1BP1/1K1R3R w - - bm g4;
r3rbk1/ppq2ppp/2b1pB2/8/6Q1/1P1B3P/P1P2PP1/R2R2K1 w - - bm Bxh7+; c1 "diff=7";
r4r1k/6qp/3R1bb1/pNp2p2/PnB1pP2/4B2P/1P3Q1K/6R1 w - - bm Rxf6;
r4rk1/ppp3pp/3b4/7q/1PPp2b1/P2P1Nn1/3NPRB1/R1B1Q1K1 b - - bm Rae8;
r6k/N1Rb2bp/p2p1nr1/3Pp2q/1P2Pp1P/5N2/P3QBP1/4R1K1 b - - bm Bh3; id "arasan19.158"; c0 "Persson-Gerhardt, Simon Webb mem email 2007";
rn3rk1/pn1p1ppq/bpp4p/7P/4N3/6P1/PP3PB1/R1BQR1K1 w - - bm Qg4; id "AlphaZero - Stockfish8";
2 positions that produce some
chaotic (buggy ?) behavior in Stockfish_19082608, best move is lost or other moves still the best for a long time (numbers 160 and 167 in the initial list) :
Code: Select all
r1b2rk1/1pq2ppp/p1p1p3/2n1P3/2N2P2/3B4/PPP3PP/R2Q1RK1 w - - bm Bxh7;
r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - bm g4;
8 positions
I still consider unclear, I have to spend some hours to debug them : numbers 36, 78, 83, 113, 139, 146, 179, 214 in the initial list
I ask help to forumers with big machine: please run this 8 positions, 3 best moves, around 200 billions nodes search (around 3 hours at 20 millions nodes/sec) and post the log here.
Code: Select all
2k5/2p5/1q1p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 w - - am Nxb6+?; c1 "diff=10";
4r1k1/2pbnrq1/1p1b1p2/2pPp1pp/p1P1P2P/P2QNNB1/1P3PP1/3RR2K b - - bm Nc8 g4; id "Stockfish8 - AlphaZero";
5bk1/1b1rq2p/2p1p1p1/1pP1P3/1Pp1B2Q/2B3P1/5PK1/7R w - - bm Qg4; id "AlphaZero - Stockfish8";
8/1p2b3/6k1/5p2/p2NbP1p/P1B1P1p1/1P5P/6K1 w - - bm h3; c0 "fortress From Smirin-HIARCS"; c1 "diff=10";
b3r3/q2B2k1/3Q2p1/1p5p/3pP3/5P2/1p4PP/5RK1 b - - bm d3+; c1 "diff=6";
q1r5/k3ppp1/2R5/PP1KP2r/2p4Q/2p1p3/5pP1/3R4 w - - id ?; bm Qd4+;
r2br1k1/1b3q1p/pp1p1ppB/3Nn3/n1PNP2R/4Q3/1P2B1PP/5R1K w - - bm Nf5;
rn2r1q1/p5k1/2p2bp1/1p4p1/2P5/4B1PQ/5PK1/3R3R w - - bm Bd4;
The remaining 187 positions still very good.
I hope to post the final version of the "hard-talkchess-2020" set next week