Search found 1721 matches

by peter
Fri Mar 22, 2019 11:04 pm
Forum: Computer Chess Club: General Topics
Topic: Revisiting g5 (Tough Tactical Test Position?)
Replies: 37
Views: 2356

Re: Revisiting g5 (Tough Tactical Test Position?)

I have these lines stored from latest thread (there was another one last year already, I think) and some analysis of mine: [Event "CCC"] [Site "?"] [Date "2018.10.10"] [Round "?"] [White "Any, Engine"] [Black "KHC, Andy"] [Result "*"] [Annotator "Martan,Peter"] [SetUp "1"] [FEN "r1bq1r1k/2pn3n/1p1p...
by peter
Thu Mar 21, 2019 7:50 pm
Forum: Computer Chess Club: General Topics
Topic: Revisiting g5 (Tough Tactical Test Position?)
Replies: 37
Views: 2356

Re: Revisiting g5 (Tough Tactical Test Position?)

The positions I analyzed came from the following plans, collected from the original thread: [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 1"] 1... g5 2. hxg5 Nxg5 3. Nx...
by peter
Tue Mar 19, 2019 10:41 pm
Forum: Computer Chess Club: General Topics
Topic: NUCLEUS
Replies: 42
Views: 5245

Re: NUCLEUS

Is there an output log of all the nuclei to see what ProDeo is selecting? This may help choose the best pair of engines for slave1 and slave2 Haven't worked with Nucleus much lately, still pondering about which new GPU to choose. If I already had a new one, I'd try probably mainly Leela and a secon...
by peter
Tue Mar 19, 2019 5:16 pm
Forum: Computer Chess Club: General Topics
Topic: EG Cook
Replies: 21
Views: 1797

Re: EG Cook

If 50-move rule is unchecked for syzygy. Stockfish may not enforce 50-move rule. Enforced or not, it's a counting rule, except as for studies. The best 7men line after 17...Nxd2 (which can be denied for two more moves with 17.Kb1 instead of Kc1, so longest line to mate after 17.Kb1 Qf6 18.Rc3 Nxd2 ...
by peter
Tue Mar 19, 2019 4:15 pm
Forum: Computer Chess Club: General Topics
Topic: EG Cook
Replies: 21
Views: 1797

Re: EG Cook

D. Keith 2nd commendation Kopnin 90 JT. EG July 2011 - page 209 Lomonosov Cook. Usually if Stockfish give evaluation above +1 for certain material imbalances it sometimes forced lomonosov mate, like in this case. r5b1/5N1k/B6P/2b2K1N/R3n3/p6p/3P4/8 w - - 0 1 [Event "?"] [Site "?"] [Date "????.??.??...
by peter
Tue Mar 19, 2019 6:38 am
Forum: Computer Chess Club: General Topics
Topic: Humorous study claimed to be winning for white
Replies: 3
Views: 591

Re: Humorous study claimed to be winning for white

I only have a shallow search for this one. 1r2bb1k/4p3/2pn1p2/pp2p3/1Pr5/N2BPP1n/RBPPNP2/4K1R1 w - - acd 38; acs 581; bm Rh1; c3 "Rh1"; c6 Arves.01179; ce 98; pm Rh1; pv Rh1 Rh4 Ng1 Bf7 Ra1 axb4 Nb1 Be6 Bf1 c5 Bxh3 Bf5 d3 c4 e4 Be6 dxc4 bxc4 c3 b3 Ra7 Nb7 Ba3 Nd6 Bb4 Nc8 Ra6 Nd6 Bg2 Rxh1 Bxh1 Rd8 R...
by peter
Mon Mar 18, 2019 8:27 pm
Forum: Computer Chess Club: General Topics
Topic: Humorous study claimed to be winning for white
Replies: 3
Views: 591

Re: Humorous study claimed to be winning for white

I only have a shallow search for this one. 1r2bb1k/4p3/2pn1p2/pp2p3/1Pr5/N2BPP1n/RBPPNP2/4K1R1 w - - acd 38; acs 581; bm Rh1; c3 "Rh1"; c6 Arves.01179; ce 98; pm Rh1; pv Rh1 Rh4 Ng1 Bf7 Ra1 axb4 Nb1 Be6 Bf1 c5 Bxh3 Bf5 d3 c4 e4 Be6 dxc4 bxc4 c3 b3 Ra7 Nb7 Ba3 Nd6 Bb4 Nc8 Ra6 Nd6 Bg2 Rxh1 Bxh1 Rd8 R...
by peter
Mon Mar 18, 2019 7:33 am
Forum: Computer Chess Club: General Topics
Topic: nice position
Replies: 1
Views: 318

Re: nice position

Hi Michael! r3r1k1/1b1nbp1p/1qn1p3/1p1pPp2/p2P4/P2BNN2/1P1Q1BPP/R4RK1 w - - Bxf5 and Kh1 are good moves, but there is a much better move. SF, on my machine, sometimes finds it in about 30 seconds, other times are much longer. Started with empty hash (32G) 24 threads of 12x3GHz, no Syzygys, default s...
by peter
Sun Mar 17, 2019 12:11 pm
Forum: Computer Chess Club: General Topics
Topic: Hard engine puzzles
Replies: 7
Views: 735

Re: Hard engine puzzles

Puzzle #2 Pål Benno, Hungary | White wins. K6n/1p2b2P/7P/p7/1k6/8/1Pp1B1R1/8 w - - 0 0 Eval reaches +4 in 1 second for SF After some Forward- Backward: K6n/1p2b2P/7P/p7/1k6/8/1Pp1B1R1/8 w - - 0 1 Analysis by CF EXT 120319 x64 POP NUMA: 1.Rg1 a4 2.Rc1 Kb3 3.Bd3 b5 4.Rxc2 Bf6 5.Rc6 Bxb2 6.Bxb5 a3 7.B...
by peter
Sun Mar 17, 2019 8:30 am
Forum: Computer Chess Club: General Topics
Topic: Hard engine puzzles
Replies: 7
Views: 735

Re: Hard engine puzzles

J. Gerhold | 4th commendation | EG 2010 october issue page 283. 6k1/2p2p1p/4pP2/8/1pPB1P1P/7p/1KP1R3/7r w - - 0 1 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "New game"] [Black "?"] [Result "*"] [SetUp "1"] [FEN "6k1/2p2p1p/4pP2/8/1pPB1P1P/7p/1KP1R3/7r w - - 0 1"] [PlyCount "19"] ...