Search found 3077 matches

by Eelco de Groot
Sat Jul 20, 2019 9:49 am
Forum: Computer Chess Club: General Topics
Topic: What's up with this endgame?
Replies: 56
Views: 4656

Re: What's up with this endgame?

I can see that the difference is in the following position 8/1k6/5pB1/K2p1pp1/3P1P2/3bP1P1/8/8 w - - 11 67 Here g4 is not good and without the pawns g5 e3 the move g4 is winning. I think you are right Uri, with pawns g5 and e3 still on board Uly would have just drawn that particular position. 8/2k5...
by Eelco de Groot
Sat Jul 20, 2019 8:18 am
Forum: Computer Chess Club: General Topics
Topic: What's up with this endgame?
Replies: 56
Views: 4656

Re: What's up with this endgame?

Could be Uri but does Stockfish see that too? Without tablebases I don't think everything is reliable on my end. Black loses the move g4-g5 (Zwischenzug is that the right word?) though so that maybe changes the Zugzwang situation if he takes gxf4?
by Eelco de Groot
Sat Jul 20, 2019 8:05 am
Forum: Computer Chess Club: General Topics
Topic: What's up with this endgame?
Replies: 56
Views: 4656

Re: What's up with this endgame?

(Between moves 50 and 60) Judging by the 0.95 scores here, at move 53 Kaissa thinks Stockfish blundered away the half point (quickly sees that 53..gxf4 is wrong) and this still draw: 8/K1k5/1p3p2/3p1pp1/3P1P2/PB1bP1P1/8/8 b - - Engine: Kaissa IV NoContempt (512 MB) by T. Romstad, M. Costalba, J. Kii...
by Eelco de Groot
Sat Jul 20, 2019 7:50 am
Forum: Computer Chess Club: General Topics
Topic: What's up with this endgame?
Replies: 56
Views: 4656

Re: What's up with this endgame?

Stockfish end of 2017 can't have been all that bad :roll: What did it miss? At move 50 Kaissa with no tablebases thinks this about drawish: 4B3/K1k5/1p3pp1/3p1p2/3P1P2/P2bP3/6P1/8 b - - Engine: Kaissa IV NoContempt (one thread, version 154B, 512 MB) by T. Romstad, M. Costalba, J. Kiiski, G. Linscott...
by Eelco de Groot
Fri Jul 19, 2019 3:17 pm
Forum: Computer Chess Club: General Topics
Topic: One more issue with king safety/attack for Stockfish
Replies: 27
Views: 2312

Re: One more issue with king safety/attack for Stockfish

If you make very small changes, with one thread the time to solution greatly varies so mainly search luck seems important. With many threads the chance of success is of course higher so SF not finding it quickly with one thread maybe does not matter very much. I could not find something easily repai...
by Eelco de Groot
Tue Jul 16, 2019 2:09 am
Forum: Computer Chess Club: General Topics
Topic: Analyze a position
Replies: 14
Views: 969

Re: Analyze a position

Kaissa thinks that e4 and d5 can transpose, but definitely no 0.00 eval for both. This is with Multi PV started after the single line search, so it can profit from that first search. The PV is now more similar to that of Louis's CFish. No tablebases though that can make a difference and there are so...
by Eelco de Groot
Mon Jul 15, 2019 9:10 pm
Forum: Computer Chess Club: General Topics
Topic: Analyze a position
Replies: 14
Views: 969

Re: Analyze a position

Strange, only -0.20 eval with Stockfish? I do get the same d5 (eventually) but the evals are much lower here? r2qkb1r/1b3ppp/p3pn2/1p6/2pP4/2N1PN2/PPQ2PPP/R1BR2K1 w kq - Engine: Kaissa IV NoContempt (one thread, search 035, 512 MB) by T. Romstad, M. Costalba, J. Kiiski, G. Linscott 19/27 0:01 -0.69 ...
by Eelco de Groot
Sat Jul 13, 2019 5:07 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Severe windows 10 problems. What to do?
Replies: 63
Views: 7001

Re: Severe windows 10 problems. What to do?

Sorry to interrupt the monologue Henk but aren't you making things worse searching files that are important to you with only ancient Dos tools. Nice to learn Dos but ancient, books you need were in De Slegte but De Slegte is also out of business... All the while any fruitless search will increase yo...
by Eelco de Groot
Fri Jul 12, 2019 9:44 pm
Forum: Computer Chess Club: General Topics
Topic: Any engines solve this one?
Replies: 23
Views: 2008

Re: Any engines solve this one?

After forcing Qxg4 white is going to win. But black is not going to play Qxg4 on the previous ply, but instead Qh4. r1b2rk1/pp3ppp/1n2p3/3pP3/2PN1Bq1/b1PB4/P1Q2P1P/1K1R3R w - - acd 36; acs 207; bm Qd2; c3 "Qd2"; ce 218; pm Qd2; pv Qd2 Qh5 Rhg1 g6 Bg5 Nxc4 Qf4 f6 Bxf6 Rf7 h4 Bd7 Nf3 Bf8 Rg5 Bh6 Rxh5...
by Eelco de Groot
Fri Jul 12, 2019 12:30 pm
Forum: Computer Chess Club: General Topics
Topic: Any engines solve this one?
Replies: 23
Views: 2008

Re: Any engines solve this one?

Certainly interesting guys, if that is correct, is it certain that 2. g4 is the main line intended after 1. Nd4 Qh5. Seeing nothing yet with Multi PV overnight. Currently at -0.10 for 2. g4 fifth choice. r1b2rk1/pp3ppp/1n2p3/3pP2q/2PN1B2/b1PB2P1/P1Q2P1P/1K1R3R w - - Engine: Kaissa IV NoContempt (512...