Search found 1560 matches

by Ajedrecista
Sun Apr 18, 2021 6:42 pm
Forum: Computer Chess Club: General Topics
Topic: Great Queen Sac by GM Lasker against George Thomas?
Replies: 9
Views: 447

Re: Great queen sac by GM Ed Lasker against George Thomas.

Hello Larry: [...] Although this game was played 109 years ago, I met and spoke with the winner, Ed Lasker, in the 1970s! Amazing! There are different sequences of moves according to this site (via ChessGames ). I did not know about the game until now, but once Qxh7+ is played, I was right in many c...
by Ajedrecista
Sun Apr 18, 2021 10:34 am
Forum: Computer Chess Club: General Topics
Topic: Meltwater Champions Chess Tour PGN
Replies: 6
Views: 331

Re: Meltwater Champions Chess Tour PGN.

Hello Ferdinand: I would like to know the time pressure of Grischuk in tournaments where he performed well, for example at Linares 2009, then compare with the rest of players of those tournaments. Disgracefully, I did not find any PGNs of Linares 2009 with time stats. Grischuk is well known to put h...
by Ajedrecista
Sat Apr 17, 2021 6:07 pm
Forum: Computer Chess Club: General Topics
Topic: Meltwater Champions Chess Tour PGN
Replies: 6
Views: 331

Re: Meltwater Champions Chess Tour PGN.

Hello Ferdinand: Does anyone can share a pgn with movetime or timeleft after move info of the past Meltwater Champions Chess Tours like Skilling Open, Airthings Masters, Opera Euro Rapid and Magnus Carlsen Invitational. Just the prelim games are enough. I would like to generate time pressure stats, ...
by Ajedrecista
Thu Apr 15, 2021 8:29 pm
Forum: Computer Chess Club: General Topics
Topic: Who composed this problem?
Replies: 2
Views: 185

Re: Who composed this problem?

Hello Gabor: I did not have success in a fast search. However, I found other problem with similar theme (I suppose it since I have not got access to a chess engine right now) where there is only a difference in the square of the black pawn: g4 instead of c4. That problem is the number 324340 of Yet ...
by Ajedrecista
Tue Apr 13, 2021 7:15 pm
Forum: Computer Chess Club: General Topics
Topic: Can any engine find the winning move here ?
Replies: 35
Views: 1384

Re: Can any engine find the winning move here?

Hello: Gusev vs. Auerbach ... once again. Analysed to death, though what a queen sacrifice! [d]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 1 24 [Event "Molniya Sporting Society"] [Site "Chelyabinsk URS"] [Date "1946.??.??"] [EventDate "?"] [Round "5"] [Result "1-0"] [White "Yuri S Gusev"] [Blac...
by Ajedrecista
Tue Apr 13, 2021 7:07 pm
Forum: Computer Chess Club: General Topics
Topic: Perft 7 -> 1.6 trillion moves
Replies: 3
Views: 522

Re: perft(7) -> 1.6 trillion moves.

Hello: [...] 4r1k1/p4pp1/2n2n1B/2b5/N6Q/P2q1N2/1r4PP/R4R1K b - - 1 23 positions(1) = 79 positions(2) = 3,319 positions(3) = 124,423 positions(4) = 2,859,642 positions(5) = 64,788,485 I can compute the value of position(6) but I ran out of spare time. In view of partial results at 16 steps of calcula...
by Ajedrecista
Mon Apr 12, 2021 7:12 pm
Forum: Computer Chess Club: General Topics
Topic: Perft 7 -> 1.6 trillion moves
Replies: 3
Views: 522

Re: perft(7) -> 1.6 trillion moves.

Hello Mike: I have computed perft(8) value while I confirmed perft(7) of the first position with gperft 1.1 perft counter. I have also computed the number of unique positions with JetChess 1.0.0.0 perft counter. Here are the results: 4r1k1/p4pp1/2n2n1B/2b5/N6Q/P2q1N2/1r4PP/R4R1K b - - 1 23 Depth is ...
by Ajedrecista
Sun Apr 11, 2021 10:46 am
Forum: Computer Chess Club: General Topics
Topic: Unusual imbalance
Replies: 12
Views: 767

Re: Unusual imbalance.

Hello: It is true that an exchange sequence of NNqBBr is not usually seen. But I paid attention on black moves from 13th to 15th (Qd8-c7, Qc7-b6 and Qb6-a5), which reminds me the original moves of the queen ( Wikipedia article on the subject ), which bring back memories of Kasparov - Karpov exhibiti...
by Ajedrecista
Sun Apr 11, 2021 10:04 am
Forum: Computer Chess Club: General Topics
Topic: Bartel- Artemiev Eur OCC 2021 21...Nxh4
Replies: 3
Views: 395

Re: Bartel - Artemiev, Eur OCC 2021 21...Nxh4.

Hello Vincent: Game is here : https://www.chessbomb.com/arena/2021-european-online-club-cup-playoff/03-Bartel_Mateusz-Artemiev_Vladislav Not very hard but SF13 needs depth 26 ! :cry: 21...Nxh4!! [d]r3k2r/1p2q3/p2p4/2p1pnB1/6pP/2NP1bP1/PPPQ1P2/R4RK1 b kq - 1 21 Bf3 + g4 are monsters in this position!...
by Ajedrecista
Sun Apr 04, 2021 10:37 am
Forum: Computer Chess Club: General Topics
Topic: Nice endgame of Gogobello 3.0 (NNUE Revolution) vs. Laser 1.7
Replies: 2
Views: 474

Re: Nice endgame of Gogobello 3.0 (NNUE Revolution) vs. Laser 1.7.

Hello: [Event "NN Test86"] [Site "ISR 3"] [Date "2021.04.04"] [Round "4"] [White "Laser-1_7"] [Black "Gogobello 3.0 x64_bmi2_NNUE_Revolution"] [Result "0-1"] [BlackElo "2200"] [ECO "A00"] [Opening "Dunst (Sleipner-Heinrichsen-Van Geet) Opening"] [Time "11:03:56"] [WhiteElo "2200"] [TimeControl "240+...