Search found 1780 matches

by peter
Tue Oct 08, 2019 11:27 pm
Forum: Computer Chess Club: General Topics
Topic: is this a fortress?
Replies: 17
Views: 3501

Re: is this a fortress?

11 Cores each with pondering on, 8192M hash , game 5 min with 5 sec inc. Lc0 scoring - 70% is under two pawns, 100% is two queens advantage. nice queen sac at the end to secure the win [Event "Mac Pro x5690 3.46 Ghz "] [Site "Mac-Pro.local"] [Date "2019.10.07"] [Round "-"] [White "Honey 100719"] [B...
by peter
Sun Sep 22, 2019 8:48 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position
Replies: 6
Views: 845

Re: Test Position

Lc0 (network T40B.1-106) with 100M nodes: Nodes: 100M, N/s: 32.9k, Time: 50m 36s (limit met) 61.2% Qb4 a3 Qxc3+ bxc3 dxe3 Bd3 exf2+ Kxf2 Nbd7 Re1 Ne5 Kg1 Be6 Nd4 Nfd7 Nxe6 fxe6 Be2 Nc5 g3 Nxe4 Bg4 Nc5 Rf1 Bf6 h4 h5 Bh3 Kf7 Qe2 Rac8 a4 b6 Kh1 Rc7 a5 bxa5 Rxa5 Rfc8 Kg2 Rb8 Rb5 Ra8 Ra5 Rb8 Rb5 Rh8 Rfb...
by peter
Sun Sep 22, 2019 8:23 pm
Forum: Computer Chess Club: General Topics
Topic: Test Position
Replies: 6
Views: 845

Re: Test Position

here's another opinion ... 5 m with 3 sec inc with 12 real cores. [Event "Mac Pro x5690 3.46 Ghz "] [Site "Mac-Pro.local"] [Date "2019.09.22"] [Round "-"] [White "Honey X5j"] [Black "Honey X5j"] [Result "1-0"] [TimeControl "300+3"] [Annotator "9. +50.95 8... +51.44"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4...
by peter
Sun Sep 08, 2019 6:02 am
Forum: Computer Chess Club: General Topics
Topic: BrainLearn
Replies: 16
Views: 2839

Re: BrainLearn

Yet as for difficult tactical positions time to solution doesn't get as much better, as one is used to see with old-fashioned learning files like the ones, e.g. SF-PA had. Especially for Zugzwang- studies it's still some kind of luck, if and how much hash- entries are stored usefully or not, depend...
by peter
Sun Sep 08, 2019 5:18 am
Forum: Computer Chess Club: General Topics
Topic: BrainLearn
Replies: 16
Views: 2839

Re: BrainLearn

amchess wrote:
Sat Sep 07, 2019 1:44 pm
Have fun!
Thanks, Andrea!

Works without move- history (opening moves leading to position of interest) now too, that's fine!
8-)
by peter
Wed Aug 28, 2019 5:56 am
Forum: Computer Chess Club: General Topics
Topic: 2004 flashback
Replies: 1
Views: 649

Re: 2004 flashback

Hi Mike! Analysis by the soon to be released Honey X5i SF dev. default (Analysis Contempt 24 Both), no tbs: 3r2k1/5pp1/p3p2p/1pq5/5P2/PP6/1P3RPP/5Q1K b - - 0 1 Analysis by Brainfish 210819 64 POPCNT: 28...Qd5 29.b4 Qb3 30.Qg1 Rd1 31.Rf1 Rxf1 32.Qxf1 -+ (-1.95) Depth: 7/7 00:00:00 40kN 28...Qd5 29.Qe...
by peter
Wed Aug 28, 2019 5:01 am
Forum: Computer Chess Club: General Topics
Topic: 29 Alpha-Beta's against Leela...
Replies: 62
Views: 10920

Re: 29 Alpha-Beta's against Leela...

Here's what Stockfish-dev gives with MultiPV = 2 in the position after 24...Rec8 25. Nd2 r1r3k1/3b1ppp/8/1p1p4/nPpP1BP1/4P2P/P2N1P2/2Q3K1 b - - 2 2 -3.31 2... h5 3. gxh5 c3 4. Nb3 c2 5. Nc5 Bf5 6. e4 Bxe4 7. f3 Bf5 8. Qa1 f6 9. Kf2 Kf7 10. Nb7 Ra6 11. Nc5 Ra7 12. h6 gxh6 13. Nxa4 Rxa4 14. a3 h5 15....
by peter
Tue Aug 27, 2019 6:19 pm
Forum: Computer Chess Club: General Topics
Topic: 29 Alpha-Beta's against Leela...
Replies: 62
Views: 10920

Re: 29 Alpha-Beta's against Leela...

My Stockfish-dev now agrees that 25. Nd2 should be met with 25...h5. In fact, the response is strong enough that 25. Nd2 has been replaced with 25. Na3. So now I have 24...Rec8 25. Na3 c3, and so 24...c3 and 24...Rec8 are back to being equivalent by transposition. Can you confirm this? Not quite, L...
by peter
Tue Aug 27, 2019 6:15 am
Forum: Computer Chess Club: General Topics
Topic: 29 Alpha-Beta's against Leela...
Replies: 62
Views: 10920

Re: 29 Alpha-Beta's against Leela...

Hi Lous! A deep new search with Stockfish-dev suggests that c3 might indeed be the "best" move here: -3.69 1... c3 2. Na3 Rec8 3. Nc2 Nb2 4. a3 h5 5. f3 hxg4 6. hxg4 Nc4 7. Kh2 Ra6 8. Kg3 f6 9. e4 dxe4 10. fxe4 Be8 11. d5 Bg6 12. a4 Rxa4 13. Nd4 c2 14. Qxc2 Ra3+ 15. Kf2 Rca8 16. Ne2 Ra2 17. Qd1 Nb2 ...
by peter
Wed Aug 14, 2019 8:52 pm
Forum: Computer Chess Club: General Topics
Topic: Mate in 17
Replies: 22
Views: 5034

Re: Mate in 17

Black appears to be in zugzwang. Most engines won't find it then. Even with null-move pruning disabled, Stockfish isn't finding anything ... yet: SugaR started with empty hash, 24 threads of a 12x3GHz CPU, 32Gb hash, nullmove disabled, ICCF3 (int.MV- mode 8): 1N1n4/2BPbpPb/3r1p2/2p1kP2/2p1p1P1/2p1P...