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How well does the new Stockfish 12 work on Pentiums and i486? Reply from here : http://talkchess.com/forum3/viewtopic.php?p=863999#p863999 Some approximations here : http://www.talkchess.com/forum3/viewtopic.php?f=6&t=72485 http://www.talkchess.com/forum3/viewtopic.php?f=2&t=63857 A version close t...

Smells like a draw to me. Searching: 6k1/6p1/5p1p/5r1P/3p4/8/3rPP1R/4RK2 w - - 0 1 infinite: 0 time: 0 increment: 0 moves to go: 0 ... snip...snip... 87 -1.54 1:58:34 763165M Rc1 d3 exd3 Rxd3 Rc8+ Kh7 Rc4 Rd1+ Kg2 Rd2 Kf1 Rb5 Re4 Rc5 Rh3 Ra5 Rh2 Rdd5 Reh4 Rd1+ Ke2 Rc1 Kf3 Rc7 Re4 Rc3+ Ke2 Rc2+ Kf3 ...

The problem with very long searches (1.5 Trillon nodes) is that unless you have a very large TT (i.e. at least equal to the nodes searched in bytes) they become unreliable simply because during a part of the sub-search the TT will be effectively completely over-written. Things found in one iteratio...

From this latest position updated Stockfish_20092822_x64_avx2 with nn-baeb9ef2d183.nnue goes to -1.99 at depth 73 and stays at -1.99 to at least depth 95 (1.5 trillion nodes) so it looks drawish: 95/133 -1.99 1.dxc5 Nxc5 2.Qd4 Qf5 3.Kf1 Rfb8 4.Be3 Rb4 5.Qd2 Ne4 6.Nxe4 Rxe4 7.Qd3 a5 8.Bd2 Bc7 9.Rc1 ...

Remember Elo is statistics, and SPRT is statistics, LOS is statistics. "And statistics is a game of probability, and it cannot be known for certain whether statistical conclusions are correct. Whenever there is uncertainty, there is the possibility of making an error. Considering this nature of sta...

So I'd take the dtm from the output after 2.hxg5 and leave it for good, Yet could'nt resist :-) 8/2p5/2b2Bpp/2P5/pK2P1kP/1p6/1P6/8 b - - 0 1 Analysis by Cfish 030820 64 POPCNT NUMA: 1...g5 2.hxg5 hxg5 3.e5 Kf4 4.Bd8 g4 5.Bxc7 g3 6.Bd6 g2 7.e6+ Ke3 8.Bh2 Kf2 9.Be5 g1Q 10.Bd4+ Kg2 11.Bxg1 Kxg1 12.Kc3...

This is the breakthrough I've been predicting for years! It finally happened, and I'm just glad chess looks very healthy after it (draw rates have gone down! Some lines are proving to be playable again!) Until everyone uses these? Everyone is already using these, when Eman Enigma 1.00 (closed sourc...

SF-NNUE has found a few improvements: [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "1-0"] [FEN "6br/5p2/2pN4/2p2Kpk/2P2R2/6Pp/2P4P/8 w - - 0 1"] 1.Rh4+ (104:M21) 1...gxh4 2.g4+ Kh6 3.Kf6 Kh7 4.Ne8 Kh6 5.Ng7 Kh7 6.Nh5 Kh6 7.Nf4 Kh7 8.Nxh3 Kh6 9.Nf4 Kh7 10.h3 ...

Trained on Reinforcement Learn and fine tuned using CCRL games: https://www.dropbox.com/s/71qy3j8gtgch2ss/qh-fine-0803-5.zip?dl=0 How does this net fair against some of Sergio's more recent nets? I tested it vs. SF 200717, like all S.Vieri nets. Look here: https://www.sp-cc.de/files/ergebnisse_nnue...

It seems to me that the size of the net that is optimal is likely a function of the power of the computer. A one core Pentium would need a tiny net, and a 128 core dual Epyc would be able to use a much larger net. I don't have any proof, just another thought experiment It seems to me that if you ar...