Search found 5206 matches

by zullil
Wed Jul 17, 2019 1:07 am
Forum: Computer Chess Club: General Topics
Topic: One more issue with king safety/attack for Stockfish
Replies: 10
Views: 228

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

You are misreading the output, SF is considering Bxe4 with a huge disadvantage - notice how the sign flips when it sees Qg6 ( on your output) . No, he's not misreading. He's referring to Stockfish's search of the position just prior to the one he posted. Point your engine at this: 2kr3r/p5p1/2pq4/n...
by zullil
Wed Jul 17, 2019 12:57 am
Forum: Computer Chess Club: General Topics
Topic: One more issue with king safety/attack for Stockfish
Replies: 10
Views: 228

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

You are misreading the output, SF is considering Bxe4 with a huge disadvantage - notice how the sign flips when it sees Qg6 ( on your output) . No, he's not misreading. He's referring to Stockfish's search of the position just prior to the one he posted. Point your engine at this: 2kr3r/p5p1/2pq4/n...
by zullil
Wed Jul 17, 2019 12:35 am
Forum: Computer Chess Club: General Topics
Topic: One more issue with king safety/attack for Stockfish
Replies: 10
Views: 228

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

From the game Vitiugov - Grischuk (Riga Grand Prix 2019). https://www.chessbomb.com/arena/2019-riga-grand-prix/01-Vitiugov_Nikita-Grischuk_Alexander [Event "Grand Prix Riga"] [Site "Riga LAT"] [Date "2019.07.12"] [EventDate "2019.07.12"] [Round "1.1"] [Result "1/2-1/2"] [White "Nikita Vitiugov"] [B...
by zullil
Wed Jul 17, 2019 12:01 am
Forum: Computer Chess Club: General Topics
Topic: One more issue with king safety/attack for Stockfish
Replies: 10
Views: 228

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

Stockfish-dev with default settings (16 MB hash and single-threaded, deterministic search) needs about 172 million nodes to find Qg6: info depth 35 seldepth 51 multipv 1 score cp -365 lowerbound nodes 171929033 nps 1976877 hashfull 1000 tbhits 0 time 86970 pv d6g6 info depth 34 currmove d6g6 currmov...
by zullil
Tue Jul 16, 2019 8:58 pm
Forum: Computer Chess Club: General Topics
Topic: Generating 6-Piece Syzygy Tablebases?
Replies: 2
Views: 102

Re: Generating 6-Piece Syzygy Tablebases?

On my old laptop I generated the 6-piece syzygy tablesbases. As I remember I downloaded a zip file containing the necessary exe and ran a batch file. I now have a new laptop but can't find the files to download. Can someone send me a link to generating all 6 pieces tablesbases? If possible I don't ...
by zullil
Tue Jul 16, 2019 8:24 pm
Forum: Computer Chess Club: General Topics
Topic: Analyze a position
Replies: 14
Views: 401

Re: Analyze a position

Cfish-dev, with 6-man tables: 0.00 13. d5 Qc7 14. e4 Rd8 15. Be3 exd5 16. exd5 Nxd5 17. Rxd5 Rxd5 18. Qe4+ Qe7 19. Qf4 Rd3 20. Re1 Bxf3 21. gxf3 Qb7 22. Bd4+ Be7 23. Bc5 Rd7 24. Nd5 Rxd5 25. Rxe7+ Qxe7 26. Bxe7 Kxe7 27. Qe4+ Kd6 28. Qf4+ (depth 55, 2:49:29) 0.00 13. d5 Qc7 14. e4 Be7 15. d6 Bxd6 16...
by zullil
Tue Jul 16, 2019 7:17 pm
Forum: Computer Chess Club: General Topics
Topic: Leela outplays SF Dev in a position that SF evaluates as draw
Replies: 16
Views: 751

Re: Leela outplays SF Dev in a position that SF evaluates as draw

Not only that , this SF derivative (with Lc0 scoring) , at the critical moment, readily sacs the pawn to get in the position and it sees the Ne4 Bxe4 dxe4 Rxe4 f5 maneuver almost instantly: r2q1rk1/pp3p2/1bn2n1p/3p1Bpb/8/1NP2NBP/PP3PP1/R2QR1K1 b - - 1 16 dep score nodes time (not shown: tbhits knps...
by zullil
Tue Jul 16, 2019 6:15 pm
Forum: Computer Chess Club: General Topics
Topic: Analyze a position
Replies: 14
Views: 401

Re: Analyze a position

Cfish-dev, with 6-man tables: 0.00 13. d5 Qc7 14. e4 Rd8 15. Be3 exd5 16. exd5 Nxd5 17. Rxd5 Rxd5 18. Qe4+ Qe7 19. Qf4 Rd3 20. Re1 Bxf3 21. gxf3 Qb7 22. Bd4+ Be7 23. Bc5 Rd7 24. Nd5 Rxd5 25. Rxe7+ Qxe7 26. Bxe7 Kxe7 27. Qe4+ Kd6 28. Qf4+ (depth 55, 2:49:29) 0.00 13. d5 Qc7 14. e4 Be7 15. d6 Bxd6 16...
by zullil
Tue Jul 16, 2019 5:18 pm
Forum: Computer Chess Club: General Topics
Topic: Analyze a position
Replies: 14
Views: 401

Re: Analyze a position

Cfish-dev, with 6-man tables: 0.00 13. d5 Qc7 14. e4 Rd8 15. Be3 exd5 16. exd5 Nxd5 17. Rxd5 Rxd5 18. Qe4+ Qe7 19. Qf4 Rd3 20. Re1 Bxf3 21. gxf3 Qb7 22. Bd4+ Be7 23. Bc5 Rd7 24. Nd5 Rxd5 25. Rxe7+ Qxe7 26. Bxe7 Kxe7 27. Qe4+ Kd6 28. Qf4+ (depth 55, 2:49:29) 0.00 13. d5 Qc7 14. e4 Be7 15. d6 Bxd6 16...
by zullil
Tue Jul 16, 2019 1:40 pm
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 115
Views: 3513

Re: buying a new computer

I seemed to have found the error in the first game but have't as yet looked at the second. My claim: Stockfish played the error much earlier than it thinks. Several alternatives suggested by Stockfish would have also lost it the game (say, MultiPV shows 0.00 for 3 alternative moves, but one of them...