Search found 3511 matches

by Vinvin
Sat Aug 17, 2019 9:29 am
Forum: Computer Chess Club: General Topics
Topic: Stockfish Wins Chess Com Engines Champs9!
Replies: 4
Views: 207

Re: Stockfish Wins Chess Com Engines Champs9!

Stockfish even won a game as Black with the weird KGA opening 1. e4 e5 2. f4 exf4 3. Nf3 h5 4. d4 g5 5. Bc4 Yes Jon....I find these Chess.com games of a very high quality and very interesting....just noticed the fantastic time control of 10 min +3 sec...so there are no excuses and is enough time fo...
by Vinvin
Fri Aug 16, 2019 11:59 pm
Forum: Computer Chess Club: General Topics
Topic: Crystal
Replies: 12
Views: 573

Re: Crystal

I would be glad to someone who would make a Windows (moderm) compile !

Thanks to Joseph for this gift !
Stockfish has become less and less interesting for analyze because it miss so many obvious moves :-(
by Vinvin
Fri Aug 16, 2019 3:00 pm
Forum: Computer Chess Club: General Topics
Topic: Sting SF 16
Replies: 16
Views: 1772

Re: Sting SF 16

Hi !
Here's another one where Sting-SF cannot see the draw :
[D]4K1bn/5p2/5PpB/6P1/3k4/8/8/7q w - - 0 4

Variation from viewtopic.php?p=666297#p666297
by Vinvin
Thu Aug 15, 2019 11:13 pm
Forum: Computer Chess Club: General Topics
Topic: Three Test positions from Larsen, Euwe and Gufeld!
Replies: 12
Views: 1226

Re: Three Test positions from Larsen, Euwe and Gufeld!

Position 3 still interesting : rnb2r2/3pppkp/p5p1/qPpQ4/P1P1n3/4PN2/4KPPP/RN3B1R w - - 0 12 Wasn't that position black to move previously? Sure ! And the best move is Nd6! rnb2r2/3pppkp/p5p1/qPpQ4/P1P1n3/4PN2/4KPPP/RN3B1R b - - bm Nd6; Changing the color to play sometimes happens with Arena when go...
by Vinvin
Thu Aug 15, 2019 8:44 pm
Forum: Computer Chess Club: General Topics
Topic: Three Test positions from Larsen, Euwe and Gufeld!
Replies: 12
Views: 1226

Re: Three Test positions from Larsen, Euwe and Gufeld!

Position 1 is too easy. For position 2, there's a better move but it's hard to find : Nexg6! 3b2n1/1q3p1k/6pp/np2N3/2bBPN2/1pP4P/4QPP1/1B4K1 w - - 0 33 Position 3 still interesting : rnb2r2/3pppkp/p5p1/qPpQ4/P1P1n3/4PN2/4KPPP/RN3B1R w - - 0 12 Stockfish_19081422_x64_modern: Found 511 tablebases ... ...
by Vinvin
Thu Aug 15, 2019 7:58 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position: Sion Castro-Rivera, Cordoba 1991
Replies: 13
Views: 1485

Re: Test Position: Sion Castro-Rivera, Cordoba 1991

Stockfish has regressed a lot on this position ! It finds no more Qh5!! with a big advantage for white :( FEN: r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - 0 1 Stockfish_19081422_x64_modern: ... 41/64 10:13 4 622 907 059 7 537 807 -0,82 1.Nxe7+ Qxe7 2.Bxc6 Bxc6 3.Bxc5 dxc5 4.Nb1 a...
by Vinvin
Thu Aug 15, 2019 7:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Test positions for draw detection
Replies: 33
Views: 5149

Re: Test positions for draw detection

Some old hard positions based on draw threats : ... [Event "Test position"] [Site "-**-"] [Date "2012.07.11"] [Round "?"] [White "White"] [Black "Black"] [Result "1/2-1/2"] [SetUp "1"] [FEN "4knQ1/7r/3p2p1/2bP1pP1/5P1N/6K1/8/8 b - - 1 1"] 59...Rxh4!! 60. Kxh4 Bd4 {getting the draw} 61. Kg3 Ke7 62. ...
by Vinvin
Thu Aug 15, 2019 6:36 pm
Forum: Computer Chess Club: General Topics
Topic: Nh4 is hard to find, but the stats will tell you it is right
Replies: 12
Views: 1387

Re: Nh4 is hard to find, but the stats will tell you it is right

[d]r3k2r/ppqbnppp/2n1p3/1B1pP3/P1pP4/2P2N2/2PB1PPP/R2Q1RK1 w kq - acd 43/61; acs 6451 ; acn 49590987888; ce 18 ; bm Nh4; pv Nh4 O-O Qg4 Ng6 Nxg6 fxg6 Bc1 Rf5 Bxc6 Bxc6 a5 a6 f4 Bb5 Re1 Qd8 h3 Qc7 Bb2 Re8 Reb1 Qf7 Rf1 Qc7 g3 b6 axb6 Qxb6 Rfb1 a5 Kg2 Rf7 Ba3 a4 h4 Qa5 Bd6 Bc6 Ra3 Rb7 Rxb7 Bxb7 Bb4 Qb...
by Vinvin
Thu Aug 15, 2019 4:45 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position: Baburin-Adianto, Liechtenstein 1993
Replies: 12
Views: 794

Re: Test Position: Baburin-Adianto, Liechtenstein 1993

jdart wrote:
Sun Sep 13, 2015 3:30 am
The first one:

[D] q1r1k2r/1b3pp1/p3pn2/P1b5/1pN1P2p/3B1P2/1P2Q1PP/R1B2R1K b k -
That Still a good position in 2019 : Nh5! Threatening the sacrifice Ng3+!
by Vinvin
Thu Aug 15, 2019 2:12 pm
Forum: Computer Chess Club: General Topics
Topic: Big score drop from Stockfish against Houdini
Replies: 2
Views: 566

Re: Big score drop from Stockfish against Houdini

4 years later, the problem still. SF has a big trouble to see 45.Rxe5 is a good move here : [d]5bk1/1q1b4/3r2pp/p1p1p2N/2p5/P1P2PQP/6P1/2B1R1K1 w - - 0 45 Stockfish_19081422_x64_modern: ... 41/92 06:22 3 058 444 601 8 002 775 -0,95 45.f4 e4 46.f5 Bxf5 47.Bxh6 Rd3 48.Be3 Qf7 49.Rc1 Bd6 50.Nf4 Bxh3 51...