Search found 4005 matches

by Vinvin
Wed Sep 16, 2020 6:23 pm
Forum: Computer Chess Club: General Topics
Topic: Alpha Zero's 21. Bg5! revisited
Replies: 83
Views: 14662

Re: Alpha Zero's 21. Bg5! revisited

mmt wrote:
Wed Sep 16, 2020 1:45 pm
Do we actually know that 21. Bg5 is better?
I remember I spent some time, some years ago on this position and Bg5 was consistently 1 pawn above b4.
Try to run with 2 best moves or see the score after playing both moves.
by Vinvin
Wed Sep 16, 2020 9:18 am
Forum: Computer Chess Club: General Topics
Topic: Chess variants made with help from alpha zero article
Replies: 37
Views: 4365

Re: Chess variants made with help from alpha zero article

Do you know the opening advantage for Shogi, Xiangqi, checkers, backgammon, etc. (in terms of win percentage of each side)? Shogi's opening advantage is minimal. The Japanese Shogi federation even had a year where second player (white) won more than the first player. https://www.chess.com/news/view...
by Vinvin
Tue Sep 15, 2020 8:08 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish dev on fire in NCM!
Replies: 6
Views: 1305

Re: Stockfish dev on fire in NCM!

Jouni wrote:
Tue Sep 15, 2020 5:23 pm
https://nextchessmove.com/dev-builds

+22 ELO suddenly! Latest patch was a new net, which gave +3 ELO in framework :o . So what's happening?
Incredible improvement !!! :twisted: :twisted: :twisted:
by Vinvin
Mon Sep 14, 2020 10:45 pm
Forum: Computer Chess Club: General Topics
Topic: Are there chess programs to evaluate chess rating
Replies: 4
Views: 751

Re: Are there chess programs to evaluate chess rating

Several years ago used ChessGameReport.exe and I was happy with it. http://talkchess.com/forum3/viewtopic.php?t=51865 http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=236452#pid236452 It produces a report like this : CHESS GAME REPORT Game scored at a 2000 Elo skill level. ----------- WHIT...
by Vinvin
Thu Sep 10, 2020 2:58 am
Forum: Computer Chess Club: General Topics
Topic: 1.g4 opening is losing?
Replies: 451
Views: 61321

Re: 1.g4 opening is losing?

Right. Is there a handy example of a 7-man position that is a theoretical draw for the side to move, but for which only one or two non-obvious moves hold the draw? I'm interested in finding such positions too, e.g. the simplest possible endgame positions that are too hard for computers alone or eve...
by Vinvin
Tue Sep 08, 2020 8:58 pm
Forum: Computer Chess Club: General Topics
Topic: AVX-512 and NNUE
Replies: 11
Views: 1722

Re: AVX-512 and NNUE

Has anyone benchmarked Stockfish NNUE's performance on an AVX-512 system with an AVX-512 build? How does it compare to a Zen2 AVX2 build? Some fun facts about Intel and reduced Turbo Boost frequency : https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Downclocking Downclocking Since AVX instr...
by Vinvin
Tue Sep 08, 2020 11:25 am
Forum: Computer Chess Club: General Topics
Topic: Chess solved?
Replies: 265
Views: 32788

Re: Chess solved?

... can anyone tell me what his "type C" strategy was, please? "type C" is "goal oriented" : https://books.google.be/books?id=ZQV4zvVlCWMC&pg=PA42&lpg=PA42&dq=tree+shannon+type+c+goal+oriented&source=bl&ots=rysUCXimGa&sig=ACfU3U26TQBY6k4w56qnoSVGLdknLqTi7A&hl=fr&sa=X&ved=2ahUKEwjwwsfHuNnrAhVP3qQKHa...
by Vinvin
Tue Sep 08, 2020 10:16 am
Forum: Computer Chess Club: General Topics
Topic: Chess solved?
Replies: 265
Views: 32788

Re: Chess solved?

If this can help, here's the thesis who proves the "connect 4" game is solved :
http://www.informatik.uni-trier.de/~fer ... ewinnt.pdf
by Vinvin
Mon Sep 07, 2020 10:11 pm
Forum: Computer Chess Club: General Topics
Topic: Tough Tactical Test, the 35 hardest positions
Replies: 30
Views: 4162

Re: Tough Tactical Test, the 35 hardest positions

Analysis of C:\Users\dannc\Downloads\tttsub.epd Analyzing engine: Bluefish-FD-XI 9/6/2020 9:23:18 PM Level: 600 Seconds Source : List of EPD/PGN files C:\Users\dannc\Downloads\tttsub.epd Colours : White moves=True, Black moves=True Direction : forward Games (PGN) : From 1 to 999999 Moves : All move...
by Vinvin
Sun Sep 06, 2020 8:47 pm
Forum: Computer Chess Club: General Topics
Topic: Tough Tactical Test, the 35 hardest positions
Replies: 30
Views: 4162

Re: Tough Tactical Test, the 35 hardest positions

r1b1r1k1/p3nppp/2p1p3/q3P1B1/2P5/P1pB4/5PPP/1R1Q1RK1 w - - bm Bxh7+; id "TTT1.004"; 2b2rk1/N1p3b1/p2p1n2/2PPp1q1/2B1Pn1p/PrN2P2/5RPB/R1Q4K b - - bm N6h5; id "TTT1.005"; r2b4/1r5k/2p1p1p1/1pPpPpPp/pQ1P1P1P/1bP3KB/8/1N6 b - - bm a3; id "TTT1.009"; 1qrr1b2/6p1/ppkn1P2/3pP3/1PP5/2BP1pP1/BQ3P2/1RRN1n1K ...