Search found 664 matches

by F. Bluemers
Mon Nov 13, 2017 1:08 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: assert
Replies: 17
Views: 3366

Re: assert

Hi, I'm looking to improve my program. For that I'm adding asserts all over the place to check input variables, outgoing values, and so on. I've also added an assert that if we're in a null move, then beta == alpha + 1. My question now is: what other things are there to check for? regards The last ...
by F. Bluemers
Thu Sep 14, 2017 1:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LMR and killer
Replies: 9
Views: 2038

Re: LMR and killer

Is this standard?
I have tested making an exception for killers a couple of times but it was always worse in Dirty.I guess if the first N good captures fail the killers just won't help, except when there are no good captures but then the killers would be on the top of the movelist and not be reduced.
by F. Bluemers
Tue Jul 11, 2017 8:05 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Looking for dense magics
Replies: 3
Views: 2119

Re: Looking for dense magics

Lately I have been looking for these keys too,especially the rook squares 48..63. I've found them except 2,just or-ing masks with the key to test e.g. //hints for some squares: //return (ranval()&0xffffffffffffff00ULL)|0x0000ff00FF000000ULL; 48,49,50,51,52,53 //return (ranval()&0...
by F. Bluemers
Thu Jun 22, 2017 8:27 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: canned attacks on the a and h files against a castled positi
Replies: 2
Views: 677

Re: canned attacks on the a and h files against a castled po

After numerous losses by myself and others (actually 100%) since some recent changes, I tried something at 1-second-per-move by the program and defeated it with the canonical canned attack on the h file against the castled program. As it was only looking about 8-9 ply deep in these 1-second searche...
by F. Bluemers
Sun Jun 04, 2017 9:26 pm
Forum: Computer Chess Club: General Topics
Topic: "New" chess engine: Sabrina
Replies: 16
Views: 3906

Re: "New" chess engine: Sabrina

I guess if one is so sensitive to an engine name one cannot enjoy movies like "Prince of Darkness" or "La maschera del demonio".
"Chirstine" would have been a nice name too.
Best
by F. Bluemers
Sat May 13, 2017 1:43 pm
Forum: Computer Chess Club: General Topics
Topic: TLCV and mobile network
Replies: 1
Views: 603

Re: TLCV and mobile network

If I want to follow some games and try to connect to a site with TLCV, e.g. GrahamCCRL.dyndns.org port <whatever>, while using a mobile network I get this message: Connection failed. No response from server. The same at home works without any problems. Does anyone else have the same problem? Why wo...
by F. Bluemers
Tue Jul 12, 2016 9:39 pm
Forum: Computer Chess Club: General Topics
Topic: 4 old zugzwangs where modern engines still have troubles
Replies: 13
Views: 2542

Re: 4 old zugzwangs where modern engines still have troubles

Well,maybe not. Dirty beta,single core on fx8350 (3.7 Ghz) [d]6k1/3p4/P2P4/8/5Kp1/1p4Q1/p5p1/b7 w - - bm Qxg2 19 +7.37 17.0M 0:10.35 Qxg2 Be5+ Kf5 a1=Q a7 Bxd6 a8=Q+ Qxa8 Qxa8+ Kf7 Kxg4 Ke7 Qe4+ Kd8 Qb1 Kc7 Qxb3 Bc5 Qd5 d6 Qe4 Kb6 Kf4 18 +7.40 14.2M 0:08.73 Qxg2 Be5+ Kf5 a1=Q a7 Bxd6 a8=Q+ Qxa8 Qxa8...
by F. Bluemers
Sun Jul 10, 2016 10:20 am
Forum: Computer Chess Club: General Topics
Topic: Complex Puzzle
Replies: 330
Views: 51852

Re: Complex Puzzle

[D] k3K3/P3N3/7p/ppp3pp/3pp3/6R1/rn1P2PB/8 w - - 0 1 Dirty beta: Kxa7 might spoil it: 29 +4.50 1.61G 20:42.96 Ra3 Kxa7 Rxa2 Nd3 Rxa5+ Kb6 Ra8 b4 Kd7 Kb5 Nf5 Kc4 Kc6 Ne1 Bd6 Nxg2 Bxc5 Ne1 Bxd4 Nf3 Be3 Ne5+ Kc7 Ng4 Rb8 h4 Nd6+ Kd3 Rxb4 29 +4.50 1.43G 18:48.65 Ra3 Kxa7 Rxa2 Nd3 Rxa5+ Kb6 Ra8 b4 Kd7 Kb5...
by F. Bluemers
Thu May 26, 2016 8:23 pm
Forum: Chess Players Forum
Topic: How to play Philidor Defense
Replies: 8
Views: 1953

Re: How to play Philidor Defense

Philidor is difficult to play with black. Always capture on d4 to get the knight on d4 otherwise you may easily lose in a few moves for Bf7, Ng5, Nd5 are always threatening. This may be interesting for black as an alternative to 2 .. Nc6. Haven't tried it yet. [d] rnbqkbnr/ppp2p1p/3p2p1/8/3NP3/8/PP...
by F. Bluemers
Mon May 23, 2016 3:06 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: LMR problems
Replies: 25
Views: 4395

Re: LMR problems

I don't understand that all Pawn pushes are promising. A Pawn might be a passer, and pushing it many times in a row might lead to promotion. If you would reduce each of these pushes, you would have to search very deep before you would discover that. I guess normally you would only do that for passe...