Search found 317 matches

by mmt
Fri Dec 04, 2020 6:54 pm
Forum: Computer Chess Club: General Topics
Topic: An idea for a different type of tournament
Replies: 45
Views: 10073

Re: An idea for a different type of tournament

4k3/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1 BD v12-R2.08 32 #15 10.2G 1:16.02 e3 g6 Qf3 c6 Qf4 d6 Bc4 Kd7 Qxf7 d5 Be2 Kd6 Bg4 a5 Qe6+ Kc7 Qxe7+ Kb8 Qd8+ Ka7 Bc8 a4 Qc7 Ka6 Qxb7+ Ka5 b4+ axb3 axb3# 31 #15 9.29G 1:08.61 e3 g6 Qf3 c6 Qf4 d6 Bc4 Kd7 Qxf7 d5 Be2 Kd6 Bg4 a5 Qe6+ Kc7 Qxe7+ Kb8 Qd8+ ...
by mmt
Thu Dec 03, 2020 7:23 pm
Forum: Computer Chess Club: General Topics
Topic: Endgame position
Replies: 2
Views: 165

Re: Endgame position

SF dev with many 7-piece EGTBs doesn't see a way for black to save it: 58/109 107,025,285k -4.41 1. ... Qc4+ 2.Kd7 Qb5+ 3.Ke6 Qa6+ 4.Nd6 Qxa2+ 5.d5 Qxb2 6.Nc4 Qb8 7.Rf4 Qc8+ 8.Kd6 g5 9.Rd4 Kf8 10.Bb4 Kg7 11.Ba5 Kf8 12.Bc7 g4 13.Kc6 g3 14.d6 g2 15.d7 Qa8+ 16.Kd6 g1Q 17.d8Q+ Qxd8+ 18.Bxd8 Qg6 19.Ke6 Q...
by mmt
Thu Dec 03, 2020 2:48 pm
Forum: Computer Chess Club: General Topics
Topic: Complicated position found
Replies: 9
Views: 1203

Re: Complicated position found

Latest SF dev thinks it's a draw: 78/94 6:13:39 580,591,250k 25,897k 0.00 1.Qg3 Bb5 2.Qf3 Nd3+ 3.Kd1 e4 4.Qe3 Bc6 5.Kc2 Nf5 6.Qe2 Nb4+ 7.Kd1 Nd3 8.f3 Bc5 9.fxe4 0-0-0 10.Rf1 Ne3+ 11.dxe3 Nf4+ 12.Nd2 Nxe2 13.Kxe2 Bd6 14.Rxf7 Bxh2 15.c4 Be5 16.Nf3 Bf6 17.e5 Be8 18.Rxc7+ Kxc7 19.exf6 gxf6 20.Bd2 Rd7 21...
by mmt
Thu Dec 03, 2020 2:09 am
Forum: Computer Chess Club: General Topics
Topic: why did they destroy stockfish in finding mates
Replies: 20
Views: 1083

Re: why did they destroy stockfish in finding mates

I think this is actually a very, very good idea. Ankan's move generator is absurdly fast. So couple this move generator to and and/or depth-first proof search. I have a feeling it might be scary good at mate solving. Scary Good :shock: Right, but while basic CUDA programming is not too hard, it tak...
by mmt
Wed Dec 02, 2020 5:18 pm
Forum: Computer Chess Club: General Topics
Topic: Candid question about nets (NNUE and others)
Replies: 7
Views: 355

Re: Candid question about nets (NNUE and others)

Yes, they would be better, assuming you spent the same amount of time training each of them as the general net. Irreversible openings make the tree smaller after all and each opening should still have more than enough data to generalize. But would they be better than the general net if you trained t...
by mmt
Thu Nov 19, 2020 10:10 pm
Forum: Computer Chess Club: General Topics
Topic: CPU Vector Unit, the new jam for NNs...
Replies: 8
Views: 909

Re: CPU Vector Unit, the new jam for NNs...

Currently Intel's AVX-512 clocks significantly down under load, so there is no speed gain by broader bit-width compared to AVX2, may change in future. Also there is an trend to multiple Vector Units per CPU core underway. Intel's upcoming Ice Lake processors are supposed to do this: https://www.ser...
by mmt
Sat Nov 14, 2020 7:00 am
Forum: Computer Chess Club: General Topics
Topic: How close can we come to proving that white draws?
Replies: 61
Views: 3377

Re: How close can we come to proving that white draws?

If we can prove this, I think it would be an important result in chess. The most important theoretical result up to that point in time. Somebody can get a paper published (cite my post! :D ) and it would be in the Wikipedia main chess article and it's much much much easier than proving that black dr...
by mmt
Sat Nov 14, 2020 6:48 am
Forum: Computer Chess Club: General Topics
Topic: How close can we come to proving that white draws?
Replies: 61
Views: 3377

Re: How close can we come to proving that white draws?

Madeleine Birchfield wrote:
Sat Nov 14, 2020 6:45 am
If black blunders at any time then your constructed opening book should allow white to win, if you are proving that black cannot win.
My book just needs to let white draw, not necessarily win.
by mmt
Sat Nov 14, 2020 6:47 am
Forum: Computer Chess Club: General Topics
Topic: How close can we come to proving that white draws?
Replies: 61
Views: 3377

Re: How close can we come to proving that white draws?

One line is not enough. What you are looking at is an entire game tree, or an entire opening book. Because if you only have one line, then black could deviate from your line at any time and you would no longer be in your line. You still need to prove that every move that you make can force the game...
by mmt
Sat Nov 14, 2020 6:41 am
Forum: Computer Chess Club: General Topics
Topic: How close can we come to proving that white draws?
Replies: 61
Views: 3377

Re: How close can we come to proving that white draws?

Proving that white can draw or win is different from proving that white could force a draw. Which one are you referring to in this topic? Maybe it's simpler from the other direction: I want to prove that black does not win. I want to prove that white at least draws. Which means that I can do this b...