Search found 3375 matches

by Vinvin
Tue Dec 11, 2018 6:11 am
Forum: Computer Chess Club: General Topics
Topic: Lc0-Xiphos
Replies: 6
Views: 461

Re: Lc0-Xiphos

I see Lc0 crashed one time.
May be it was in this game.
by Vinvin
Mon Dec 10, 2018 2:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LMR and sacrifices
Replies: 8
Views: 939

Re: LMR and sacrifices

Well, I guess there is no way a queen sacrifice can be compensate by static evaluation even with attack table. Maybe simply not applying LMR on moves that are checks may help to find tricky wins. Yes, in that kind of position, an average human chessplayer (around 1800) can be superior to an engine ...
by Vinvin
Mon Dec 10, 2018 12:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LMR and sacrifices
Replies: 8
Views: 939

Re: LMR and sacrifices

I was wondering what methods people use in distinguishing between between sacrifices that appear to lose material but should not be reduced and bad moves which do lose material and should be reduced. The most absurd position I know. Mate in 8 : [d]rnbq3r/pppp4/3b1pkp/5p2/2BP4/4P3/PPP2PPP/RN1QK2R w ...
by Vinvin
Sun Dec 09, 2018 3:25 pm
Forum: Computer Chess Club: General Topics
Topic: Giuoco Forte : SF8-A0, 0-1
Replies: 2
Views: 259

Giuoco Forte : SF8-A0, 0-1

PGN for the video from Daniel King here : https://www.youtube.com/watch?v=75jerRXK5Yo Some interesting moves : 13...Ne7, 15...f5 [Event "Computer Match"] [Site "London, UK"] [Date "2018.01.18"] [Round "17896041660018278286"] [White "Stockfish 8"] [Black "AlphaZero"] [Result "0-1"] 1. e4 e5 2. Nf3 Nc...
by Vinvin
Fri Dec 07, 2018 9:27 am
Forum: Computer Chess Club: General Topics
Topic: 62 test positions from last couple of months
Replies: 39
Views: 1818

Re: 62 test positions from last couple of months

I do not think the answer is clear yet, but my guess is that Bg5 is actually better than Bg7: 4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - acd 51; acs 900; bm Bg5; c3 "Bg7"; ce 343; id "ERET 084 - Koenigsangriff"; pm Bg5; pv Bg5 Nf8 Qh8+ Kf7 Rxd6 Qc5+ Kg2 fxg5 Rh7+ Nxh7 Qxh7+ Kf8 Qh6+ K...
by Vinvin
Thu Dec 06, 2018 11:42 pm
Forum: Computer Chess Club: General Topics
Topic: 62 test positions from last couple of months
Replies: 39
Views: 1818

Re: 62 test positions from last couple of months

I have some doubts about this one :

4r1k1/1r1np3/1pqp1ppB/p7/2b1P1PQ/2P2P2/P3B2R/3R2K1 w - - bm Bg7; id "ERET 084 - Koenigsangriff";

Is Bg7 clearly better than the second move ?
by Vinvin
Thu Dec 06, 2018 11:38 pm
Forum: Computer Chess Club: General Topics
Topic: Alphazero news
Replies: 226
Views: 11335

Re: Alphazero news

https://www.chess.com/news/view/updated-alphazero-crushes-stockfish-in-new-1-000-game-match Stockfish 8 ??? They really fear real Stockfish ... Unfortunately we weren't able to get our time machine up and running before we finished writing the paper in order to test against engines that hadn't been...
by Vinvin
Thu Dec 06, 2018 10:26 pm
Forum: Computer Chess Club: General Topics
Topic: Alphazero news
Replies: 226
Views: 11335

Re: Alphazero news

Stockfish 8 ???
They really fear real Stockfish ...
by Vinvin
Thu Dec 06, 2018 9:51 am
Forum: Computer Chess Club: General Topics
Topic: 62 test positions from last couple of months
Replies: 39
Views: 1818

Re: 62 test positions from last couple of months

From about 100 positions in this thread, I removed easiest, incorrect and well known ones. It's still 39 positions (still 9 positions from the ERET set) Thanks a lot, Vincent! Is it ready to be stored as suite or still under work? Nr.5 (1.Bxh7+) as single best move has no discriminiation to second ...
by Vinvin
Wed Dec 05, 2018 11:06 pm
Forum: Computer Chess Club: General Topics
Topic: 62 test positions from last couple of months
Replies: 39
Views: 1818

Re: 62 test positions from last couple of months

From about 100 positions in this thread, I removed easiest, incorrect and well known ones. It's still 39 positions (still 9 positions from the ERET set) : 1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - bm Nc6; 1N6/2pp4/3k1P2/p7/1pK1P3/5P1P/3r2N1/8 w - - bm e5+; 1nrrb1k1/1qn1bppp/pp2p3/3pP3/N2P3P/1P1B...