Search found 4078 matches

by Vinvin
Sun Jan 17, 2021 6:31 pm
Forum: Computer Chess Club: General Topics
Topic: Hard Puzzles found on Gameknot
Replies: 52
Views: 8221

Re: Hard Puzzles found on Gameknot

I ran Crystal 2.0 with MultiPv=3 and at depth 38... 5K2/2p3p1/Q2r2P1/3P4/1P5B/7p/pp4pr/kn4Rb w - - 0 1 Crystal 2.0: --------------------------------------------------------------------------- 38 1:09:45 30,272,645k 7,232k +M15 1.Qd3 c5 2.Ke7 Rb6 3.d6 c4 4.Qe2 c3 5.Bf6 Rxb4 6.d7 Rb7 7.Qc2 Ra7 8.Qxc3...
by Vinvin
Sun Jan 17, 2021 6:12 pm
Forum: Computer Chess Club: General Topics
Topic: Hard-Talkchess-2020 set, final release
Replies: 158
Views: 34807

Re: Hard-Talkchess-2020 set, final release

The double rook sacrifice of Lc0 to checkmate SF12 was missed. Maybe that is pretty tough for NNUE engines too. http://talkchess.com/forum3/viewtopic.php?f=2&t=73637&p=839617#p839617 That's the shortest defeat of SF12 in a long time control I think. Nice position ! I added the test of Bluefish ther...
by Vinvin
Sun Jan 17, 2021 5:10 pm
Forum: Computer Chess Club: General Topics
Topic: Test position bm Bxh2+
Replies: 26
Views: 3063

Re: 2nd test position (Black to play) bm Nfd5!!

I don't like to open another thread and bombard the front page with test positions. So I will just append this one here, more difficult I guess since this one requires double R sac for a mating attack on Kg1 using the light squares. Black to play and win 1k1r2r1/pppbqN2/1n1b1n1p/4p3/1P5P/PB1PP3/1BQ...
by Vinvin
Sun Jan 17, 2021 2:49 pm
Forum: Computer Chess Club: General Topics
Topic: Questionable positions in the Hard-Talkchess-2020 set
Replies: 8
Views: 1499

Re: Questionable positions in the Hard-Talkchess-2020 set

... 26) Ne2-f4 -> Nc5 is also winning may be both moves are a transposition ? I still have to check deeper. FEN: 1rb2r1k/3p1pp1/p3p2p/1p2P3/4q3/1N2B1R1/PPP1N1P1/2KR1B2 w - - 0 1 Crystal3.1-sse4-popcnt: ... 25/43 00:27 139 566 456 5 093 294 +1,75 1.Nf4 Qxe5 2.Bd3 Bb7 3.Rh1 Qd6 4.Nh5 Rbc8 5.Nc5 Rg8 6...
by Vinvin
Sun Jan 17, 2021 2:43 am
Forum: Computer Chess Club: General Topics
Topic: Questionable positions in the Hard-Talkchess-2020 set
Replies: 8
Views: 1499

Re: Questionable positions in the Hard-Talkchess-2020 set

Some more glitches: 22) g2-g4 -> e6 seems also very strong : FEN: 1rb1nrk1/1p1qp2p/p1np1p1Q/3NPp2/2P5/3B1N1P/P2B2P1/R6K w - - 0 1 Crystal3.1-sse4-popcnt: ... 34/79 05:48 1 676 649 796 4 813 394 +3,00 1.g4 dxe5 2.gxf5 Rf7 3.Qh5 Rg7 4.Bh6 Kh8 5.Bxg7+ Nxg7 6.Qh6 Qe8 7.Nh4 Qf7 8.Ng6+ Kg8 9.Ngxe7+ Nxe7 1...
by Vinvin
Sat Jan 16, 2021 11:42 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal 3.1
Replies: 12
Views: 1144

Re: Crystal 3.1

New record in solving the Hard-Talkchess-2020 set : http://talkchess.com/forum3/viewtopic.php?p=879604#p879604 SugaR.AI.ICCF.1.00 : 166 solved ShashChess15.1 : 166 solved Bluefish-12-W : 162 solved Stockfish_20121407 : 153 solved Eman 6.61 : 153 solved SugaR.AI.1.00 : 149 solved Crystal-291220 : 169...
by Vinvin
Sat Jan 16, 2021 10:28 pm
Forum: Computer Chess Club: General Topics
Topic: Hard-Talkchess-2020 set, final release
Replies: 158
Views: 34807

Re: Hard-Talkchess-2020 set, final release

Results for 6 new engines (NN file used : nn-62ef826d1a6d.nnue) : SugaR.AI.ICCF.1.00 : 166 solved ShashChess15.1 : 166 solved Bluefish-12-W : 162 solved Stockfish_20121407 : 153 solved Eman 6.61 : 153 solved SugaR.AI.1.00 : 149 solved Some engines that will be tested in the following days : Crystal...
by Vinvin
Fri Jan 15, 2021 3:24 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal 3.1
Replies: 12
Views: 1144

Re: Crystal 3.1

Release highlights: Not too long after 3.0 was released there was an important false mate fix upstream, which has now been merged. ... I built it in various formats for Windows and put on my CDN. Hope it works well for you. https://chess.nyc3.cdn.digitaloceanspaces.com/crystal-3.1.tar.bz2 Thanks jh...
by Vinvin
Thu Jan 14, 2021 6:42 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Tournament with Honey, Corchess, Bluefish-XI and Crystal
Replies: 19
Views: 4267

Re: Tournament with Honey, Corchess, Bluefish-XI and Crystal

Result: --------------------------------------------------------------------------------------- # name games wins% draws% losses% score los% elo+/- 1. CF EXT 281220 x64 SSE41 N 1000 12.5 85.2 2.3 551.0 100.0 35.6 2. Bluefish v12-R1 1000 8.3 87.7 4.0 521.5 100.0 14.9 3. ShashChess 15.1 1000 8.2 87.3...
by Vinvin
Thu Jan 14, 2021 2:35 am
Forum: Computer Chess Club: General Topics
Topic: positions when humans are stronger than engines
Replies: 17
Views: 717

Re: positions when humans are stronger than engines

1rb3k1/rp1p1ppp/pPpP4/P1P5/8/8/8/K5BB w - - 0 1 Hopefully the following position is good enough. sting also blunder by bxa7 C-Fish after play Kb2 after 3h41m on an i7-6 cores (10 Mnodes/sec) see the long log under. With 3 best lines, It drops bxa7 after 5 seconds. FEN: 1rb3k1/rp1p1ppp/pPpP4/P1P5/8/...