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Sveshnikov - Stockfish goes nuts!

@tupohlav1 said in #10:

after Qd3 my stockfish 16.1 immediately recognizes that Black wins - 2.5
What depth?

@tupohlav1 said in #10: > after Qd3 my stockfish 16.1 immediately recognizes that Black wins - 2.5 What depth?

@tupohlav1 said in #10:

after Qd3 my stockfish 16.1 immediately recognizes that Black wins - 2.5
What depth?

41 on cpu Ryzen 9 - One note , a put move by move with running engine. It is true ,when i set up position and then run engine it take it 1 min to find that 21, ... Bxg3 is winning

@tupohlav1 said in #10: >after Qd3 my stockfish 16.1 immediately recognizes that Black wins - 2.5 What depth? 41 on cpu Ryzen 9 - One note , a put move by move with running engine. It is true ,when i set up position and then run engine it take it 1 min to find that 21, ... Bxg3 is winning
<Comment deleted by user>

@Simpo137 said in #11:

What depth?

SF16.1 thinks Qd3 is the best move until depth 31 when it suddenly saw something horrible and the eval nose-dived from +0.2 to -2.2.

Impressive enough because it took SF16.1 a full 37 seconds to see this. And this is 37 seconds on an Epyc 9554 running 120 threads with 120G hash, so well over 1 billion nodes.

Edit: 1.4 billion nodes to be precise.

@Simpo137 said in #11: > What depth? SF16.1 thinks Qd3 is the best move until depth 31 when it suddenly saw something horrible and the eval nose-dived from +0.2 to -2.2. Impressive enough because it took SF16.1 a full 37 seconds to see this. And this is 37 seconds on an Epyc 9554 running 120 threads with 120G hash, so well over 1 billion nodes. Edit: 1.4 billion nodes to be precise.

it actually said Qd3 is great! but ONLY after i showed it it corrected itself! nice game

it actually said Qd3 is great! but ONLY after i showed it it corrected itself! nice game

Very interesting. Only after black's rook B8 Stockfish 16.0 7MB started to find that black has an advantage with "reasonable" speed, something around 30 depth.

Very interesting. Only after black's rook B8 Stockfish 16.0 7MB started to find that black has an advantage with "reasonable" speed, something around 30 depth.

Evaluation with stockfish-20240719 with a consumer 65w cpu 1 thread 16gb:

$ /home/michael/opt/stockfish-20240719/bin/stockfish
setoption name Hash value 16384
position fen "r1q2r1k/3b2pp/3p4/4p3/pN2P2b/2P2pP1/RPBQ1P1P/R5K1 w - - 1 28"
go depth 60

Stockfish dev-20240719-a8401e80 by the Stockfish developers (see AUTHORS file)
info string Available processors: 0-15
info string Using 1 thread
info string NNUE evaluation using nn-e8bac1c07a5a.nnue (133MiB, (22528, 3072, 15, 32, 1))
info string NNUE evaluation using nn-37f18f62d772.nnue (6MiB, (22528, 128, 15, 32, 1))
info depth 1 seldepth 6 multipv 1 score cp 44 nodes 58 nps 29000 hashfull 0 tbhits 0 time 2 pv c2a4 d7a4 a2a4 a8a4 a1a4
info depth 2 seldepth 6 multipv 1 score cp 44 nodes 103 nps 51500 hashfull 0 tbhits 0 time 2 pv c2a4 d7a4 a2a4 a8a4 a1a4
info depth 3 seldepth 6 multipv 1 score cp 44 nodes 146 nps 73000 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4
info depth 4 seldepth 6 multipv 1 score cp 44 nodes 187 nps 93500 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4 a2a4 d7a4
info depth 5 seldepth 6 multipv 1 score cp 44 nodes 228 nps 114000 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4 a2a4 d7a4 a1a4
info depth 6 seldepth 6 multipv 1 score cp 44 nodes 297 nps 148500 hashfull 0 tbhits 0 time 2 pv b4d5
info depth 7 seldepth 8 multipv 1 score cp 48 nodes 362 nps 181000 hashfull 0 tbhits 0 time 2 pv b4d5
info depth 8 seldepth 8 multipv 1 score cp 56 nodes 485 nps 242500 hashfull 0 tbhits 0 time 2 pv b4d5
info depth 9 seldepth 8 multipv 1 score cp 68 nodes 730 nps 365000 hashfull 0 tbhits 0 time 2 pv b4d5
info depth 10 seldepth 17 multipv 1 score cp 25 nodes 10480 nps 952727 hashfull 0 tbhits 0 time 11 pv b4d5 d7e8 c2d3 h4d8 b2b4
info depth 11 seldepth 14 multipv 1 score cp 26 nodes 17826 nps 1114125 hashfull 0 tbhits 0 time 16 pv b4d5 d7b5 c2d3 c8h3 d5e3 b5d3 d2d3 h4g5 d3f1 h3c8 e3d5 a8b8
info depth 12 seldepth 15 multipv 1 score cp 29 nodes 28456 nps 1237217 hashfull 0 tbhits 0 time 23 pv b4d5 d7c6 d2d3 h4g5 d5b6 c8h3 d3f1

since depth 13, after 42 milliseconds, Qd3:

info depth 13 seldepth 15 multipv 1 score cp 32 nodes 51229 nps 1219738 hashfull 0 tbhits 0 time 42 pv d2d3 h4g5 b4d5 d7c6 d5b6 c8h3 d3f1 h3f1 g1f1 a8b8
info depth 14 seldepth 20 multipv 1 score cp 34 nodes 71479 nps 1232396 hashfull 0 tbhits 0 time 58 pv d2d3 h4g5 c2a4 d7e6 b2b3 a8b8 d3d6 e6g8 a4d7 c8c3
info depth 15 seldepth 20 multipv 1 score cp 44 nodes 103993 nps 1238011 hashfull 0 tbhits 0 time 84 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 d3f1 c8g4 b4d5 b6c5 g1h1 g4d7 a4a6 d7g4
info depth 16 seldepth 22 multipv 1 score cp 42 nodes 141891 nps 1233834 hashfull 0 tbhits 0 time 115 pv d2d3 a8b8 d3a6 c8c5 c2a4 d7e6 b4d5 e6d5 e4d5 c5d5 a4c6 d5e6
info depth 17 seldepth 25 multipv 1 score cp 40 nodes 213826 nps 1250444 hashfull 0 tbhits 0 time 171 pv d2d3 h4g5 c2d1 a8b8 d3a6 c8c5 d1a4 d7e6 a2a3 e6c4 a6c6
info depth 18 seldepth 23 multipv 1 score cp 41 nodes 282600 nps 1256000 hashfull 0 tbhits 0 time 225 pv d2d3 h4g5 b4d5 d7c6 d5b6 c8h3 d3f1 h3f1 g1f1 a8b8 b6a4 d6d5 a4c5 g5e7 c2a4 c6a4 c5a4 d5e4 b2b4

since depth 18, after 335 milliseconds, Qd3, eval > 0.5:

info depth 19 seldepth 23 multipv 1 score cp 58 nodes 432505 nps 1291059 hashfull 0 tbhits 0 time 335 pv d2d3 a8b8 d3a6 b8b4 a6c8 f8c8 c3b4 c8c2 g3h4 h7h5 h2h3 d7b5 a1b1
info depth 20 seldepth 33 multipv 1 score cp 66 nodes 705933 nps 1304866 hashfull 0 tbhits 0 time 541 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 a1e1 h7h5 b2b4 c5a7 g1h1 h5h4 h2h3 g4g5 g3g4 g5d2 h1g1 f8f7
info depth 21 seldepth 31 multipv 1 score cp 65 nodes 793510 nps 1307265 hashfull 0 tbhits 0 time 607 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 a1e1 h7h5 b2b4 c5a7 b4b5 a7c5 g1h1 g4g5 b5b6 g5d2
info depth 22 seldepth 37 multipv 1 score cp 72 nodes 1298113 nps 1299412 hashfull 0 tbhits 0 time 999 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 d6d5 d1f1
info depth 23 seldepth 38 multipv 1 score cp 69 nodes 1389696 nps 1293944 hashfull 0 tbhits 0 time 1074 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 d6d5 b4b5 h7h5

since depth 24, after 2.5 seconds, Qd3, highest eval 0.85:

info depth 24 seldepth 41 multipv 1 score cp 85 nodes 3196671 nps 1274589 hashfull 1 tbhits 0 time 2508 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 a8b8 d5b6 b8b6 c2a4 d7a4 a2a4 b6b2 a4a8 c8a8 a1a8 f8a8 d3f3 h7h6 f3f5 a8e8 g1f1
info depth 25 seldepth 38 multipv 1 score cp 59 nodes 4565865 nps 1266185 hashfull 1 tbhits 0 time 3606 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 a2a1 d7h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 e5e4 b4b5 h7h6 b1b2
info depth 26 seldepth 43 multipv 1 score cp 55 nodes 6136214 nps 1247197 hashfull 1 tbhits 0 time 4920 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d5e3 h3h2 f2e1 h2g3 e1d1 g3h2 d1c1 h7h5 d3d6 f8f6 d6d2 h2g1 c1c2 f3f2 d2e2
info depth 27 seldepth 37 multipv 1 score cp 59 nodes 6530737 nps 1245848 hashfull 1 tbhits 0 time 5242 pv d2d3 h4d8 c2a4 d8b6 a4b3 a8a2 b3a2 c8c5 d3d2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 h2h3 h7h5 b4d5 b5b2 d5b6 b2b6 e1d2 b6c6 d2e3 c6c5
info depth 28 seldepth 48 multipv 1 score cp 54 nodes 8352018 nps 1238436 hashfull 2 tbhits 0 time 6744 pv d2d3 h4d8 c2a4 d8b6 a4b3 a8a2 b3a2 c8c5 d3d2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 a1d1 b5d7 e1f1 d7g4 d1d6 b6c5 d6d1 c5b4 c3b4 g4e4 f1e1 e4g4 d1d5 e5e4

since depth 29, after 9.5 seconds, Qd3, eval < 0.5 again, stockfish stops "thinking its winning":

info depth 29 seldepth 50 multipv 1 score cp 45 nodes 11732880 nps 1233093 hashfull 3 tbhits 0 time 9515 pv d2d3 h4d8 c2a4 d8b6 a4b3 c8c5 d3d2 a8a2 b3a2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 a1d1 b5d7 b4d5 b6a7 e1f1 d7g4 d1e1 h7h5 g1h1 h5h4 f1g1 f8c8 d5e7 c8c7 e7f5 h4g3 g1g3 g4g3 h2g3 a7f2
info depth 30 seldepth 51 multipv 1 score cp 40 nodes 15279107 nps 1242708 hashfull 5 tbhits 0 time 12295 pv d2d3 h4d8 c2a4 d8b6 a4b3 c8c5 d3d2 a8a2 b3a2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4e2 a1b1 h7h5 b4d5 b6a7 h2h4 e2c2 b1a1 f8f7 b2b4 c2b2
info depth 31 seldepth 50 multipv 1 score cp 45 nodes 19541413 nps 1255632 hashfull 6 tbhits 0 time 15563 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 f3f2 a2a1 h2g3 e3d2 g3f3 d5e3 f3e4 f1a6 e4h4 a1f1 d6d5 a6d6 f8e8 d2e2 d5d4 f1f2 h4h5 e2e1 h5h1 e3f1 h1e4 e1d2 e4b1
info depth 32 seldepth 57 multipv 1 score cp 36 nodes 25044771 nps 1256258 hashfull 10 tbhits 0 time 19936 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1a6 h7h5 a6d3 e4b7 b2b4 d6d5 a1h1 b7f7 h1f1 f8d8
info depth 33 seldepth 51 multipv 1 score cp 36 nodes 28718983 nps 1263316 hashfull 11 tbhits 0 time 22733 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6f2 g1f2 d7c6 a1h1 c8h3 d3f1 h3e6 f1e1 a8d8 c3c4 c6d5 e4d5 e6h3 e1f1 h3h6 f1d1 h6b6 f2f1 e5e4 c2e4 d8e8 e4f3 e8e3 a2a3 f8f3 d1f3 e3f3 a3f3 h7h5 f1g2 b6b2 f3f2 b2d4 h2h4 g7g5 h4g5 d4c4 h1d1 c4g4 d1d2 h5h4
info depth 34 seldepth 56 multipv 1 score cp 47 nodes 31493716 nps 1271599 hashfull 11 tbhits 0 time 24767 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 a8b8 d5b6 b8b6 c2a4 d7a4 a2a4 b6b2 a4a8 c8a8 a1a8 f8a8 d3f3 h8g8 f3d3 a8f8 d3d5 g8h8 d5c5 h8g8 g3g4 b2d2 g1f1 h7h6 f1e1 d2b2
info depth 35 seldepth 51 multipv 1 score cp 43 nodes 43296916 nps 1267993 hashfull 15 tbhits 0 time 34146 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 b4b5 c8h3 d3f1 h3f1 g1f1 c6b5 f1e1 a8b8 d5c7 b5c6 c2a4 c6e4 c7e6 f8f6 a4b3 b8b3 a2a7 h7h6 a7e7 b3b2 e7e8 h8h7 e6f8 h7g8 f8d7 g8f7 d7f6 b2e2 e1f1 e4d3 f1g1 g7f6 e8d8 e5e4 d8d6
info depth 36 seldepth 54 multipv 1 score cp 24 nodes 66469210 nps 1257243 hashfull 23 tbhits 0 time 52869 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 e5e4 d3a3 b4a3 a2a3 h8g7 a4c6 a8a3 a1a3
info depth 37 seldepth 59 multipv 1 score cp 18 nodes 92388796 nps 1257366 hashfull 34 tbhits 0 time 73478 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 d3f1 d7g4 b4d5 b6c5 b2b4 g4e4 c3c4 c5d4 h2h3 e4g6 g1h2 e5e4 b4b5 h7h5 h3h4 e4e3 f2e3 d4e5 d5f4 g6e4 b5b6 f8b8 f1d3 e4d3 f4d3 b8b6 a2c2 h8h7 c4c5 b6c6 c2c4 f3f2 c4c1 f2f1q c1f1 e5f6
info depth 38 seldepth 59 multipv 1 score cp 21 nodes 96522113 nps 1258059 hashfull 36 tbhits 0 time 76723 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h7h5 d2e2 h5h4 f2f5 e4f5 e3f5 h4h3 e2d3 b8f8 f5d6
info depth 39 seldepth 53 multipv 1 score cp 21 nodes 97835175 nps 1258896 hashfull 36 tbhits 0 time 77715 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h7h5 d2e2 d6d5 f2f5 e4f5 e3f5 b8c8 a2c2 h8h7 e2d3 c8f8 f5e3 d5d4
info depth 40 seldepth 56 multipv 1 score cp 19 nodes 103715895 nps 1256796 hashfull 39 tbhits 0 time 82524 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h8g8 d2e2 d6d5 f2f5 e4f5 e3f5 g8f7 a2a6 b8d8 e2d2 e5e4
info depth 41 seldepth 61 multipv 1 score cp 18 nodes 129927783 nps 1252738 hashfull 46 tbhits 0 time 103715 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 a1b1 b4d4 d3b3 d4g4 a4b5 a8a2 b3a2 g4d4 a2b2 d4b2 b1b2 b6d8 h2h4 f8f6 b2c2 f6b6 b5c6 b6b3 g1h2 b3d3 c6a4 g7f6 c2c8
info depth 42 seldepth 59 multipv 1 score cp 17 nodes 146135420 nps 1256300 hashfull 52 tbhits 0 time 116322 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 d3f1 d7g4 b4d5 b6c5 b2b4 g4e4 c3c4 c5d4 h2h3 e4g6 g1h2 e5e4 b4b5 h7h5 h3h4 e4e3 f2e3 d4e5 d5f4 g6e4 a2f2 e5f4 e3f4 f8c8 f1d1 c8c4 b5b6 c4d4 d1b3 d4b4 b3f7 b4b5 f4f5 e4f5 f7f5 b5f5 b6b7 f5b5
info depth 43 seldepth 58 multipv 1 score cp 17 nodes 161544984 nps 1257198 hashfull 55 tbhits 0 time 128496 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h8g8 f2g3 h7h5 g3h3 b8f8 d2e2 e4c6 a2c2 g7g6 h3e6 g8g7 c2d2 c6c3 e6d6 f8f4 d6b8
info depth 44 seldepth 68 multipv 1 score cp 13 nodes 267420506 nps 1250657 hashfull 90 tbhits 0 time 213824 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 a1b1 b4d4 d3b3 d4g4 a4b5 a8a2 b3a2 g4d4 a2b2 d4b2 b1b2 b6d8 b2c2 g7f6 c2c5 f6e6 h2h4 e6d6 c5c4 f8f6 g1h2 f6e6 g3g4 d6e7 h2g3
info depth 45 seldepth 66 multipv 1 score cp 13 nodes 306556367 nps 1252160 hashfull 102 tbhits 0 time 244822 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 h2h4 e5e4 d3a3 b4d4 a1b1 b6c5 a3b2 f8d8 b2d4 c5d4 b1d1 d4b6 d1d6 e4e3 f2e3 b6e3 g1f1 d8b8 d6d1 e3b6 d1d3 b6d8 d3f3 b8b6 a4b3 a8a2 b3a2 h7h5 a2d5

since depth 46, after 310 seconds, Qd1:

info depth 46 seldepth 67 multipv 1 score cp 2 nodes 384981882 nps 1240640 hashfull 131 tbhits 0 time 310309 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c6 e6b3 a4b3 c8h3 d1f1 h3f1 g1f1 b8b3 a2a3 b3a3 a1a3 h8g8 h2h4 g5f6 f1e1 g7g5 h4h5 g5g4 e1d2 g8g7 d2d3 g7h6 d3c4 h6h5 c4d5 h5g5 d5d6 h7h5 a3a1 f8h8 c3c4 h5h4 c4c5 h4h3 a1h1 h8e8
info depth 47 seldepth 65 multipv 1 score cp 1 nodes 478462197 nps 1219179 hashfull 172 tbhits 0 time 392446 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 h7h6 c2e3 d1d2 h2g1 h8h7 c6c5 d8f6 c5c2 d2d3 c2b2 e5e4 b2b1 f6d4 b4b5
info depth 48 seldepth 68 multipv 1 score cp 2 nodes 521729451 nps 1213869 hashfull 190 tbhits 0 time 429807 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d7 g7g6 h2h4 d8d7 a4d7 g5d2 c3c7 b7e4 b4b5 d2a5 c7c4 e4d3 c4a4 d3b5 a4a5 b5d7 a5e5 h7h5 c2e3 b8b1 g1h2 b1b2 g3g4 b2f2 h2g3 f2d2 g4h5 g6h5 e5c5 h8g7 g3f3
info depth 49 seldepth 68 multipv 1 score cp 0 nodes 569347875 nps 1210343 hashfull 208 tbhits 0 time 470402 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 d1d2 c2e3 g7g6 h2g1 h8g7 c6e6 d2e2 b4b5 e2e1 g1h2 e1e2 h2g1
info depth 50 seldepth 68 multipv 1 score cp 0 nodes 585929157 nps 1208851 hashfull 214 tbhits 0 time 484699 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 d1d2 c2e3 g7g6 h2g1 h8g7 c6e6 d2e2 b4b5 e2e1 g1h2 e1e2 h2g1
info depth 51 seldepth 73 multipv 1 score cp 1 nodes 632396654 nps 1206778 hashfull 231 tbhits 0 time 524037 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 h2h4 g5d2 c3d3 d5e4 d3d8 b8d8 a1d1 d8d3 c2e1 d3d4 a4c2 d2e1 d1d4 e5d4 c2e4 e1b4 e4f3 d4d3 f3e4 d3d2 e4c2 g7g6 g1h2 b4d6 h2g2 h7h6 g2f3 d6b4 f3e2 g6g5 h4h5 h8g7 c2d1 b4a5 f2f4
info depth 52 seldepth 66 multipv 1 score cp 0 nodes 668675531 nps 1204725 hashfull 245 tbhits 0 time 555044 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6
info depth 53 seldepth 33 multipv 1 score cp 0 nodes 689979623 nps 1203661 hashfull 253 tbhits 0 time 573234 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8
info depth 54 seldepth 56 multipv 1 score cp 0 nodes 754189535 nps 1199033 hashfull 279 tbhits 0 time 628998 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8
info depth 55 seldepth 34 multipv 1 score cp 0 nodes 794295002 nps 1198416 hashfull 298 tbhits 0 time 662787 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8
info depth 56 seldepth 34 multipv 1 score cp 0 nodes 833664937 nps 1197766 hashfull 313 tbhits 0 time 696016 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6
info depth 57 seldepth 34 multipv 1 score cp 0 nodes 862562156 nps 1198497 hashfull 325 tbhits 0 time 719703 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6
info depth 58 seldepth 33 multipv 1 score cp 0 nodes 899853774 nps 1197850 hashfull 338 tbhits 0 time 751224 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8
info depth 59 seldepth 33 multipv 1 score cp 0 nodes 951311387 nps 1198680 hashfull 360 tbhits 0 time 793632 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8
info depth 60 seldepth 33 multipv 1 score cp 0 nodes 986061246 nps 1199191 hashfull 377 tbhits 0 time 822272 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8

To stockfishs rescue: at least it finds an alternative after some time and depth :) As an example, Obsidian dev-13.11, still offering Qd3 at depth 48 after 549 seconds:

info depth 48 multipv 1 score cp 13 nodes 1117097543 nps 2033667 hashfull 393 tbhits 0 time 549302 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 a1b1 b4c5 c2d1 c5d4 d3d4 b6d4 d1a4 f8d8 b1b7 h8g7 a4b3 g7f6 a2a8 d8a8 h2h4 f6e7 b3d5 a8a6 b7b3 a6a1 g1h2 a1f1 d7d8b e7d8 b3f3 f1f2 f3f2 d4f2 h4h5

Evaluation with stockfish-20240719 with a consumer 65w cpu 1 thread 16gb: $ /home/michael/opt/stockfish-20240719/bin/stockfish setoption name Hash value 16384 position fen "r1q2r1k/3b2pp/3p4/4p3/pN2P2b/2P2pP1/RPBQ1P1P/R5K1 w - - 1 28" go depth 60 Stockfish dev-20240719-a8401e80 by the Stockfish developers (see AUTHORS file) info string Available processors: 0-15 info string Using 1 thread info string NNUE evaluation using nn-e8bac1c07a5a.nnue (133MiB, (22528, 3072, 15, 32, 1)) info string NNUE evaluation using nn-37f18f62d772.nnue (6MiB, (22528, 128, 15, 32, 1)) info depth 1 seldepth 6 multipv 1 score cp 44 nodes 58 nps 29000 hashfull 0 tbhits 0 time 2 pv c2a4 d7a4 a2a4 a8a4 a1a4 info depth 2 seldepth 6 multipv 1 score cp 44 nodes 103 nps 51500 hashfull 0 tbhits 0 time 2 pv c2a4 d7a4 a2a4 a8a4 a1a4 info depth 3 seldepth 6 multipv 1 score cp 44 nodes 146 nps 73000 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4 info depth 4 seldepth 6 multipv 1 score cp 44 nodes 187 nps 93500 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4 a2a4 d7a4 info depth 5 seldepth 6 multipv 1 score cp 44 nodes 228 nps 114000 hashfull 0 tbhits 0 time 2 pv c2a4 a8a4 a2a4 d7a4 a1a4 info depth 6 seldepth 6 multipv 1 score cp 44 nodes 297 nps 148500 hashfull 0 tbhits 0 time 2 pv b4d5 info depth 7 seldepth 8 multipv 1 score cp 48 nodes 362 nps 181000 hashfull 0 tbhits 0 time 2 pv b4d5 info depth 8 seldepth 8 multipv 1 score cp 56 nodes 485 nps 242500 hashfull 0 tbhits 0 time 2 pv b4d5 info depth 9 seldepth 8 multipv 1 score cp 68 nodes 730 nps 365000 hashfull 0 tbhits 0 time 2 pv b4d5 info depth 10 seldepth 17 multipv 1 score cp 25 nodes 10480 nps 952727 hashfull 0 tbhits 0 time 11 pv b4d5 d7e8 c2d3 h4d8 b2b4 info depth 11 seldepth 14 multipv 1 score cp 26 nodes 17826 nps 1114125 hashfull 0 tbhits 0 time 16 pv b4d5 d7b5 c2d3 c8h3 d5e3 b5d3 d2d3 h4g5 d3f1 h3c8 e3d5 a8b8 info depth 12 seldepth 15 multipv 1 score cp 29 nodes 28456 nps 1237217 hashfull 0 tbhits 0 time 23 pv b4d5 d7c6 d2d3 h4g5 d5b6 c8h3 d3f1 since depth 13, after 42 milliseconds, Qd3: info depth 13 seldepth 15 multipv 1 score cp 32 nodes 51229 nps 1219738 hashfull 0 tbhits 0 time 42 pv d2d3 h4g5 b4d5 d7c6 d5b6 c8h3 d3f1 h3f1 g1f1 a8b8 info depth 14 seldepth 20 multipv 1 score cp 34 nodes 71479 nps 1232396 hashfull 0 tbhits 0 time 58 pv d2d3 h4g5 c2a4 d7e6 b2b3 a8b8 d3d6 e6g8 a4d7 c8c3 info depth 15 seldepth 20 multipv 1 score cp 44 nodes 103993 nps 1238011 hashfull 0 tbhits 0 time 84 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 d3f1 c8g4 b4d5 b6c5 g1h1 g4d7 a4a6 d7g4 info depth 16 seldepth 22 multipv 1 score cp 42 nodes 141891 nps 1233834 hashfull 0 tbhits 0 time 115 pv d2d3 a8b8 d3a6 c8c5 c2a4 d7e6 b4d5 e6d5 e4d5 c5d5 a4c6 d5e6 info depth 17 seldepth 25 multipv 1 score cp 40 nodes 213826 nps 1250444 hashfull 0 tbhits 0 time 171 pv d2d3 h4g5 c2d1 a8b8 d3a6 c8c5 d1a4 d7e6 a2a3 e6c4 a6c6 info depth 18 seldepth 23 multipv 1 score cp 41 nodes 282600 nps 1256000 hashfull 0 tbhits 0 time 225 pv d2d3 h4g5 b4d5 d7c6 d5b6 c8h3 d3f1 h3f1 g1f1 a8b8 b6a4 d6d5 a4c5 g5e7 c2a4 c6a4 c5a4 d5e4 b2b4 since depth 18, after 335 milliseconds, Qd3, eval > 0.5: info depth 19 seldepth 23 multipv 1 score cp 58 nodes 432505 nps 1291059 hashfull 0 tbhits 0 time 335 pv d2d3 a8b8 d3a6 b8b4 a6c8 f8c8 c3b4 c8c2 g3h4 h7h5 h2h3 d7b5 a1b1 info depth 20 seldepth 33 multipv 1 score cp 66 nodes 705933 nps 1304866 hashfull 0 tbhits 0 time 541 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 a1e1 h7h5 b2b4 c5a7 g1h1 h5h4 h2h3 g4g5 g3g4 g5d2 h1g1 f8f7 info depth 21 seldepth 31 multipv 1 score cp 65 nodes 793510 nps 1307265 hashfull 0 tbhits 0 time 607 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 a1e1 h7h5 b2b4 c5a7 b4b5 a7c5 g1h1 g4g5 b5b6 g5d2 info depth 22 seldepth 37 multipv 1 score cp 72 nodes 1298113 nps 1299412 hashfull 0 tbhits 0 time 999 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 d6d5 d1f1 info depth 23 seldepth 38 multipv 1 score cp 69 nodes 1389696 nps 1293944 hashfull 0 tbhits 0 time 1074 pv d2d3 h4d8 c2a4 d7a4 a2a4 a8a4 a1a4 d8b6 a4a1 c8h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 d6d5 b4b5 h7h5 since depth 24, after 2.5 seconds, Qd3, highest eval 0.85: info depth 24 seldepth 41 multipv 1 score cp 85 nodes 3196671 nps 1274589 hashfull 1 tbhits 0 time 2508 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 a8b8 d5b6 b8b6 c2a4 d7a4 a2a4 b6b2 a4a8 c8a8 a1a8 f8a8 d3f3 h7h6 f3f5 a8e8 g1f1 info depth 25 seldepth 38 multipv 1 score cp 59 nodes 4565865 nps 1266185 hashfull 1 tbhits 0 time 3606 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 a2a1 d7h3 d3f1 h3g4 b4d5 b6c5 b2b4 g4e4 f1d1 c5d4 c3d4 e4d5 d4e5 d5e5 a1b1 e5e4 b4b5 h7h6 b1b2 info depth 26 seldepth 43 multipv 1 score cp 55 nodes 6136214 nps 1247197 hashfull 1 tbhits 0 time 4920 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d5e3 h3h2 f2e1 h2g3 e1d1 g3h2 d1c1 h7h5 d3d6 f8f6 d6d2 h2g1 c1c2 f3f2 d2e2 info depth 27 seldepth 37 multipv 1 score cp 59 nodes 6530737 nps 1245848 hashfull 1 tbhits 0 time 5242 pv d2d3 h4d8 c2a4 d8b6 a4b3 a8a2 b3a2 c8c5 d3d2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 h2h3 h7h5 b4d5 b5b2 d5b6 b2b6 e1d2 b6c6 d2e3 c6c5 info depth 28 seldepth 48 multipv 1 score cp 54 nodes 8352018 nps 1238436 hashfull 2 tbhits 0 time 6744 pv d2d3 h4d8 c2a4 d8b6 a4b3 a8a2 b3a2 c8c5 d3d2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 a1d1 b5d7 e1f1 d7g4 d1d6 b6c5 d6d1 c5b4 c3b4 g4e4 f1e1 e4g4 d1d5 e5e4 since depth 29, after 9.5 seconds, Qd3, eval < 0.5 again, stockfish stops "thinking its winning": info depth 29 seldepth 50 multipv 1 score cp 45 nodes 11732880 nps 1233093 hashfull 3 tbhits 0 time 9515 pv d2d3 h4d8 c2a4 d8b6 a4b3 c8c5 d3d2 a8a2 b3a2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4b5 a1d1 b5d7 b4d5 b6a7 e1f1 d7g4 d1e1 h7h5 g1h1 h5h4 f1g1 f8c8 d5e7 c8c7 e7f5 h4g3 g1g3 g4g3 h2g3 a7f2 info depth 30 seldepth 51 multipv 1 score cp 40 nodes 15279107 nps 1242708 hashfull 5 tbhits 0 time 12295 pv d2d3 h4d8 c2a4 d8b6 a4b3 c8c5 d3d2 a8a2 b3a2 d7b5 a2d5 b5e2 d2e1 c5b5 b4c6 e2c4 d5c4 b5c4 c6b4 c4e2 a1b1 h7h5 b4d5 b6a7 h2h4 e2c2 b1a1 f8f7 b2b4 c2b2 info depth 31 seldepth 50 multipv 1 score cp 45 nodes 19541413 nps 1255632 hashfull 6 tbhits 0 time 15563 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 f3f2 a2a1 h2g3 e3d2 g3f3 d5e3 f3e4 f1a6 e4h4 a1f1 d6d5 a6d6 f8e8 d2e2 d5d4 f1f2 h4h5 e2e1 h5h1 e3f1 h1e4 e1d2 e4b1 info depth 32 seldepth 57 multipv 1 score cp 36 nodes 25044771 nps 1256258 hashfull 10 tbhits 0 time 19936 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1a6 h7h5 a6d3 e4b7 b2b4 d6d5 a1h1 b7f7 h1f1 f8d8 info depth 33 seldepth 51 multipv 1 score cp 36 nodes 28718983 nps 1263316 hashfull 11 tbhits 0 time 22733 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6f2 g1f2 d7c6 a1h1 c8h3 d3f1 h3e6 f1e1 a8d8 c3c4 c6d5 e4d5 e6h3 e1f1 h3h6 f1d1 h6b6 f2f1 e5e4 c2e4 d8e8 e4f3 e8e3 a2a3 f8f3 d1f3 e3f3 a3f3 h7h5 f1g2 b6b2 f3f2 b2d4 h2h4 g7g5 h4g5 d4c4 h1d1 c4g4 d1d2 h5h4 info depth 34 seldepth 56 multipv 1 score cp 47 nodes 31493716 nps 1271599 hashfull 11 tbhits 0 time 24767 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 a8b8 d5b6 b8b6 c2a4 d7a4 a2a4 b6b2 a4a8 c8a8 a1a8 f8a8 d3f3 h8g8 f3d3 a8f8 d3d5 g8h8 d5c5 h8g8 g3g4 b2d2 g1f1 h7h6 f1e1 d2b2 info depth 35 seldepth 51 multipv 1 score cp 43 nodes 43296916 nps 1267993 hashfull 15 tbhits 0 time 34146 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 b4b5 c8h3 d3f1 h3f1 g1f1 c6b5 f1e1 a8b8 d5c7 b5c6 c2a4 c6e4 c7e6 f8f6 a4b3 b8b3 a2a7 h7h6 a7e7 b3b2 e7e8 h8h7 e6f8 h7g8 f8d7 g8f7 d7f6 b2e2 e1f1 e4d3 f1g1 g7f6 e8d8 e5e4 d8d6 info depth 36 seldepth 54 multipv 1 score cp 24 nodes 66469210 nps 1257243 hashfull 23 tbhits 0 time 52869 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 e5e4 d3a3 b4a3 a2a3 h8g7 a4c6 a8a3 a1a3 info depth 37 seldepth 59 multipv 1 score cp 18 nodes 92388796 nps 1257366 hashfull 34 tbhits 0 time 73478 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 d3f1 d7g4 b4d5 b6c5 b2b4 g4e4 c3c4 c5d4 h2h3 e4g6 g1h2 e5e4 b4b5 h7h5 h3h4 e4e3 f2e3 d4e5 d5f4 g6e4 b5b6 f8b8 f1d3 e4d3 f4d3 b8b6 a2c2 h8h7 c4c5 b6c6 c2c4 f3f2 c4c1 f2f1q c1f1 e5f6 info depth 38 seldepth 59 multipv 1 score cp 21 nodes 96522113 nps 1258059 hashfull 36 tbhits 0 time 76723 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h7h5 d2e2 h5h4 f2f5 e4f5 e3f5 h4h3 e2d3 b8f8 f5d6 info depth 39 seldepth 53 multipv 1 score cp 21 nodes 97835175 nps 1258896 hashfull 36 tbhits 0 time 77715 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h7h5 d2e2 d6d5 f2f5 e4f5 e3f5 b8c8 a2c2 h8h7 e2d3 c8f8 f5e3 d5d4 info depth 40 seldepth 56 multipv 1 score cp 19 nodes 103715895 nps 1256796 hashfull 39 tbhits 0 time 82524 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h8g8 d2e2 d6d5 f2f5 e4f5 e3f5 g8f7 a2a6 b8d8 e2d2 e5e4 info depth 41 seldepth 61 multipv 1 score cp 18 nodes 129927783 nps 1252738 hashfull 46 tbhits 0 time 103715 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 a1b1 b4d4 d3b3 d4g4 a4b5 a8a2 b3a2 g4d4 a2b2 d4b2 b1b2 b6d8 h2h4 f8f6 b2c2 f6b6 b5c6 b6b3 g1h2 b3d3 c6a4 g7f6 c2c8 info depth 42 seldepth 59 multipv 1 score cp 17 nodes 146135420 nps 1256300 hashfull 52 tbhits 0 time 116322 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 d3f1 d7g4 b4d5 b6c5 b2b4 g4e4 c3c4 c5d4 h2h3 e4g6 g1h2 e5e4 b4b5 h7h5 h3h4 e4e3 f2e3 d4e5 d5f4 g6e4 a2f2 e5f4 e3f4 f8c8 f1d1 c8c4 b5b6 c4d4 d1b3 d4b4 b3f7 b4b5 f4f5 e4f5 f7f5 b5f5 b6b7 f5b5 info depth 43 seldepth 58 multipv 1 score cp 17 nodes 161544984 nps 1257198 hashfull 55 tbhits 0 time 128496 pv d2d3 h4d8 c2a4 d8b6 a4d7 a8a2 a1a2 c8d7 b4d5 b6f2 g1f2 d7h3 d3f1 h3h2 f2e3 h2g3 a2a1 f3f2 e3d2 g3f3 d5e3 f3e4 f1e2 f8b8 b2b4 b8b4 a1a2 b4b8 e2f2 h8g8 f2g3 h7h5 g3h3 b8f8 d2e2 e4c6 a2c2 g7g6 h3e6 g8g7 c2d2 c6c3 e6d6 f8f4 d6b8 info depth 44 seldepth 68 multipv 1 score cp 13 nodes 267420506 nps 1250657 hashfull 90 tbhits 0 time 213824 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 a1b1 b4d4 d3b3 d4g4 a4b5 a8a2 b3a2 g4d4 a2b2 d4b2 b1b2 b6d8 b2c2 g7f6 c2c5 f6e6 h2h4 e6d6 c5c4 f8f6 g1h2 f6e6 g3g4 d6e7 h2g3 info depth 45 seldepth 66 multipv 1 score cp 13 nodes 306556367 nps 1252160 hashfull 102 tbhits 0 time 244822 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 c2a4 h8g7 h2h4 e5e4 d3a3 b4d4 a1b1 b6c5 a3b2 f8d8 b2d4 c5d4 b1d1 d4b6 d1d6 e4e3 f2e3 b6e3 g1f1 d8b8 d6d1 e3b6 d1d3 b6d8 d3f3 b8b6 a4b3 a8a2 b3a2 h7h5 a2d5 since depth 46, after 310 seconds, Qd1: info depth 46 seldepth 67 multipv 1 score cp 2 nodes 384981882 nps 1240640 hashfull 131 tbhits 0 time 310309 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c6 e6b3 a4b3 c8h3 d1f1 h3f1 g1f1 b8b3 a2a3 b3a3 a1a3 h8g8 h2h4 g5f6 f1e1 g7g5 h4h5 g5g4 e1d2 g8g7 d2d3 g7h6 d3c4 h6h5 c4d5 h5g5 d5d6 h7h5 a3a1 f8h8 c3c4 h5h4 c4c5 h4h3 a1h1 h8e8 info depth 47 seldepth 65 multipv 1 score cp 1 nodes 478462197 nps 1219179 hashfull 172 tbhits 0 time 392446 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 h7h6 c2e3 d1d2 h2g1 h8h7 c6c5 d8f6 c5c2 d2d3 c2b2 e5e4 b2b1 f6d4 b4b5 info depth 48 seldepth 68 multipv 1 score cp 2 nodes 521729451 nps 1213869 hashfull 190 tbhits 0 time 429807 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d7 g7g6 h2h4 d8d7 a4d7 g5d2 c3c7 b7e4 b4b5 d2a5 c7c4 e4d3 c4a4 d3b5 a4a5 b5d7 a5e5 h7h5 c2e3 b8b1 g1h2 b1b2 g3g4 b2f2 h2g3 f2d2 g4h5 g6h5 e5c5 h8g7 g3f3 info depth 49 seldepth 68 multipv 1 score cp 0 nodes 569347875 nps 1210343 hashfull 208 tbhits 0 time 470402 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 d1d2 c2e3 g7g6 h2g1 h8g7 c6e6 d2e2 b4b5 e2e1 g1h2 e1e2 h2g1 info depth 50 seldepth 68 multipv 1 score cp 0 nodes 585929157 nps 1208851 hashfull 214 tbhits 0 time 484699 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 a1d1 d5b7 d1d8 b8d8 h2h4 d8d1 g1h2 g5d8 a4c6 b7c6 c3c6 d1d2 c2e3 g7g6 h2g1 h8g7 c6e6 d2e2 b4b5 e2e1 g1h2 e1e2 h2g1 info depth 51 seldepth 73 multipv 1 score cp 1 nodes 632396654 nps 1206778 hashfull 231 tbhits 0 time 524037 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 b4c2 c8c3 a2a3 e6g8 b3b4 c3c4 d1d3 d6d5 e4d5 c4d5 d3d5 g8d5 a3c3 f8d8 h2h4 g5d2 c3d3 d5e4 d3d8 b8d8 a1d1 d8d3 c2e1 d3d4 a4c2 d2e1 d1d4 e5d4 c2e4 e1b4 e4f3 d4d3 f3e4 d3d2 e4c2 g7g6 g1h2 b4d6 h2g2 h7h6 g2f3 d6b4 f3e2 g6g5 h4h5 h8g7 c2d1 b4a5 f2f4 info depth 52 seldepth 66 multipv 1 score cp 0 nodes 668675531 nps 1204725 hashfull 245 tbhits 0 time 555044 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6 info depth 53 seldepth 33 multipv 1 score cp 0 nodes 689979623 nps 1203661 hashfull 253 tbhits 0 time 573234 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 info depth 54 seldepth 56 multipv 1 score cp 0 nodes 754189535 nps 1199033 hashfull 279 tbhits 0 time 628998 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 info depth 55 seldepth 34 multipv 1 score cp 0 nodes 794295002 nps 1198416 hashfull 298 tbhits 0 time 662787 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 info depth 56 seldepth 34 multipv 1 score cp 0 nodes 833664937 nps 1197766 hashfull 313 tbhits 0 time 696016 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6 info depth 57 seldepth 34 multipv 1 score cp 0 nodes 862562156 nps 1198497 hashfull 325 tbhits 0 time 719703 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4c2 a8a3 e5g6 h8h7 g6f8 h7h8 f8g6 info depth 58 seldepth 33 multipv 1 score cp 0 nodes 899853774 nps 1197850 hashfull 338 tbhits 0 time 751224 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8 info depth 59 seldepth 33 multipv 1 score cp 0 nodes 951311387 nps 1198680 hashfull 360 tbhits 0 time 793632 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8 info depth 60 seldepth 33 multipv 1 score cp 0 nodes 986061246 nps 1199191 hashfull 377 tbhits 0 time 822272 pv d2d1 a8b8 c2a4 d7e6 b2b3 h4g5 d1d3 h7h6 a2a3 d6d5 e4d5 e6g8 d5d6 e5e4 d6d7 e4d3 d7c8q f8c8 b4d3 c8c3 b3b4 c3a3 a1a3 b8a8 d3e5 g5f6 a4b3 a8a3 e5g6 h8h7 g6f8 h7h8 To stockfishs rescue: at least it finds an alternative after some time and depth :) As an example, Obsidian dev-13.11, still offering Qd3 at depth 48 after 549 seconds: info depth 48 multipv 1 score cp 13 nodes 1117097543 nps 2033667 hashfull 393 tbhits 0 time 549302 pv d2d3 h4d8 d3d6 d8c7 d6d3 c7b6 b4d5 b6a7 b2b4 d7c6 d3f1 c6d5 e4d5 c8c3 d5d6 a7b6 d6d7 c3b4 f1d3 g7g6 a1b1 b4c5 c2d1 c5d4 d3d4 b6d4 d1a4 f8d8 b1b7 h8g7 a4b3 g7f6 a2a8 d8a8 h2h4 f6e7 b3d5 a8a6 b7b3 a6a1 g1h2 a1f1 d7d8b e7d8 b3f3 f1f2 f3f2 d4f2 h4h5

I analyzed the game using Stockfish 16.1 on Lichess, and it showed a mate in 13 moves after the queen moves to e7. I don't think the issue lies with the engine but rather with the depth of the analysis. Lichess's automatic analysis goes up to depth 37, which allows us to see several moves ahead.

I analyzed the game using Stockfish 16.1 on Lichess, and it showed a mate in 13 moves after the queen moves to e7. I don't think the issue lies with the engine but rather with the depth of the analysis. Lichess's automatic analysis goes up to depth 37, which allows us to see several moves ahead.

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Wwwhhhhhaaaaaattttttttttt!