Search found 3689 matches

by MikeB
Fri Jul 03, 2020 10:13 pm
Forum: Computer Chess Club: General Topics
Topic: Faster Forced Mate
Replies: 120
Views: 17584

Re: Forced Mate #39 ChestUCI.epd position 6269

[d]8/5p1p/B2p1P2/p2P2NP/2rP3N/n5p1/3K1pP1/5kbn w - - 0 1 White to play, Mate in 39 /source ChestUCI.epd position 6269 Triangulation square: h4 [Event "Computer chess game"] [Site "?"] [Date "2017.07.07"] [Round "?"] [White "?"] [Black "McBrain_2017"] [Result "1-0"] [TimeControl "0+2"] [SetUp "1"] [...
by MikeB
Fri Jul 03, 2020 9:32 pm
Forum: Computer Chess Club: General Topics
Topic: ShashChess
Replies: 119
Views: 30625

Re: ShashChess

It's a pleasure to annonce the new ShashChess 12 release with a lot of novelties: ... Hi ! I tested ShashChess 12 on the Hard-Talkchess-2020 set and I saw a strange thing : the search is NOT consistent with 1 thread when I restart the engine on the same position. I tested with this position : 1nb3r...
by MikeB
Fri Jul 03, 2020 9:30 pm
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 25
Views: 990

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

Pro Value is using multipv=8 and... Thanks for clarifying, didn't know MultiPV to be involved too in presearch. So if you chose "Tactical" in addition, is then the number of internal primaries of the Tactical- mode (if set higher then 3) presearched with less pruning or yet 8 only still? I have cod...
by MikeB
Fri Jul 03, 2020 9:16 pm
Forum: Computer Chess Club: General Topics
Topic: Other fun mates
Replies: 77
Views: 6949

Re: Other fun mates

White has given a lot for this attack, and this will succeed ! mate in #9 [d] r2q1rk1/ppp1bp2/3pbnp1/7p/4N3/1P1P1N2/PB1Q4/2K4R w - - 0 1 Indeed p f r2q1rk1/ppp1bp2/3pbnp1/7p/4N3/1P1P1N2/PB1Q4/2K4R w - - 0 1 g m 9 info depth 1 seldepth 2 multipv 1 score cp -666 wdl 0 1 999 sp 0 nodes 72 nps 72000 tb...
by MikeB
Fri Jul 03, 2020 8:23 pm
Forum: Computer Chess Club: General Topics
Topic: WDL
Replies: 19
Views: 690

Re: WDL

All good comments - as an FYI, this is the current implementation by dev-Stockfish on this position. This is a known draw position: 8/1p2KP2/1p4q1/1Pp5/2P5/N1Pp1k2/3P4/1N6 b - - 76 40 # stockfish Stockfish 010720 64 POPCNT by T. Romstad, M. Costalba, J. Kiiski, G. Linscott position fen 8/1p2KP2/1p4q...
by MikeB
Fri Jul 03, 2020 2:40 am
Forum: Computer Chess Club: General Topics
Topic: Test position: Lc0 vs Stockfish, TCEC 18, game 65
Replies: 25
Views: 990

Re: Test position: Lc0 vs Stockfish, TCEC 18, game 65

Hi Louis! That's very fast! I haven't studied the code, but I'm guessing that much less LMR is being applied. Now that I'm curious, let me try Komodo with LMR totally disabled... Schwabli (my chess- PC) is busy right now, so I'm curious for your results. As for Michael Byrne's r- versions, there is...
by MikeB
Fri Jul 03, 2020 2:24 am
Forum: Computer Chess Club: General Topics
Topic: BIOS question
Replies: 4
Views: 249

Re: BIOS question

I have a question that I will work into a chess hardware question. My computer downloaded a BIOS update on its own. I let it when it asked. I have never updated my BIOS before. I am wondering what it does for the computer and will it help chess engines in anyway. I read that it helps your hardware ...
by MikeB
Thu Jul 02, 2020 6:41 am
Forum: Computer Chess Club: General Topics
Topic: WDL
Replies: 19
Views: 690

WDL

As many of know, NN engines have been reporting WDL data with Scoring Percentage for some time. A while back, I took their formula to convert to a centipawn and applied it the centipawn evaluation to come up with LC0 like output for the Honey family of engines. Today, the developers of SF committed ...
by MikeB
Wed Jul 01, 2020 12:50 am
Forum: Computer Chess Club: General Topics
Topic: Distance to mate
Replies: 29
Views: 1525

Re: Distance to mate

Great MikeB! Here I come to mate in the same way with my modest engine. Analysis by Spitter 2.1: 1. Qa8+ Ke6 2. Qe8+ Kf6 3. h7 Qf1+ 4. Nd3 Qxd3+ 5. Kc6 Qe4+ 6. Qxe4 fxe4 7. h8=Q+ Kf5 8. Qg7 d5 9. Kxd5 b5 10. Kd6 b4 11. Ke7 a5 12. Kf7 a4 13. Qg6+ Ke5 14. Qe6# +- (#14) Depth: 17/32 00:00:32 Excellent!
by MikeB
Wed Jul 01, 2020 12:40 am
Forum: Computer Chess Club: General Topics
Topic: Other fun mates
Replies: 77
Views: 6949

Re: Other fun mates

Black will clear the board here ! [d] 5rk1/6pp/p1q1p3/1pPnP3/4Q1P1/7P/PP1B2K1/3R4 b - - 0 28 Indeed Honey XI-r3 by M. Byrne and scores of others... p f 5rk1/6pp/p1q1p3/1pPnP3/4Q1P1/7P/PP1B2K1/3R4 b - - 0 28 g m 8 info depth 1 seldepth 1 multipv 1 score cp 794 wdl 1000 0 0 nodes 109 nps 109000 tbhit...