Search found 222 matches

by Tom Barrister
Thu Dec 09, 2010 2:48 pm
Forum: Computer Chess Club: General Topics
Topic: Shirov-Andersson, Biel 1991
Replies: 4
Views: 873

Re: Shirov-Andersson, Biel 1991

you've got a pretty magical bishop there... :lol: It comes from using English Descriptive Notation, then being away from the game for 30 years, then coming back and needing to learn Algebraic. It didn't help to have to hurry it along. I see I can't edit my post anymore. Since you apparently can't f...
by Tom Barrister
Thu Dec 09, 2010 4:29 am
Forum: Computer Chess Club: General Topics
Topic: Shirov-Andersson, Biel 1991
Replies: 4
Views: 873

Re: Shirov-Andersson, Biel 1991

Since nobody else tackled it, I will: 1 ... Bxh4! 2 Kf3! Shirov played 2 Kxh4, which loses quickly. All of the engines I tried found the winning line after 2 Kxh4: None of the engines found the winning line from here. Most tried to go back to the Queenside and trade the a7 pawn, then found out it ac...
by Tom Barrister
Thu Dec 09, 2010 3:40 am
Forum: Computer Chess Club: General Topics
Topic: Tough Chess problem.
Replies: 2
Views: 825

Re: Tough Chess problem.

It would be 5 exf8+ or 5 exd8=R+, among others. There are different ways to reach it. Here are two: 1 e4 Nf6 2 e5 e6 3 exf6 be7 4 fxe7 Rf8 This is what causes the dual. 5 exf8=R+ Or 5 exd8=R+ followed by the same thing 5 ... Ke7 6 Rxd8 Kd6 7 Rxc8 e4 8 Rxb8 Kc6 9 Rxa8 Kd5 10 Re8 Kd6 11 Re7 Kxe7 Even ...
by Tom Barrister
Wed Dec 08, 2010 3:21 pm
Forum: Computer Chess Club: General Topics
Topic: Question about Fruit
Replies: 49
Views: 10698

Re: Question about Fruit

What's the difference between LMR and MPC (Multi-Prob-Cut) that the Othello engines used 15 years ago?
by Tom Barrister
Tue Dec 07, 2010 4:55 pm
Forum: Computer Chess Club: General Topics
Topic: Shirov-Andersson, Biel 1991
Replies: 4
Views: 873

Re: Shirov-Andersson, Biel 1991

I don't know what the protocol/etiquette is here for posting about it, since no analysis was made. Most of the computers found Black's actual move, and most knew the best move for White after this (which isn't what Shirov actually played). None of the engines I've tried had a clue after that, althou...
by Tom Barrister
Mon Dec 06, 2010 7:50 pm
Forum: Computer Chess Club: General Topics
Topic: Helping all other UCI engines.
Replies: 19
Views: 3761

Re: Helping all other UCI engines.

The bottom line, as near as I can figure, is that Rybka 1.0 was made from, or with the aid of, Fruit open-source, whereupon it jumped 600 ELO. At that point, or soon after, it was closed-source. Where Mr. Rajlich got his improvements from thereafter is open to debate. They can include none/some/all ...
by Tom Barrister
Mon Dec 06, 2010 1:35 am
Forum: Computer Chess Club: General Topics
Topic: Gaviota TBs and the 50-move rule
Replies: 8
Views: 1039

Re: Gaviota TBs and the 50-move rule

Houdini's 120th move looks legal to me. The illegal move notice occurred right after White made its 50th move following the last capture/pawn-move (at Black's 70th). Black should have been entitled to a 50th move as well, at which point the game would be adjudicated as a draw by the 50 move rule. I'...
by Tom Barrister
Fri Dec 03, 2010 6:26 am
Forum: Computer Chess Club: General Topics
Topic: ChessGUI 0.205
Replies: 14
Views: 2197

Re: ChessGUI 0.205

Kirill Kryukov wrote:
Dann Corbit wrote:Q:
What's 5Q+5Q?
A:
10Q!
;-)
Image
White to move and win in 9.

Play against the database

See the solution

:-)
The 3x4 chess is interesting, as is the analysis of it. Thanks for putting the site up.
by Tom Barrister
Tue Nov 30, 2010 10:05 pm
Forum: Computer Chess Club: General Topics
Topic: TEST position TCEC5- Houdini 1.03a-DRybka4 1-0
Replies: 105
Views: 24787

Re: TEST position TCEC5- Houdini 1.03a-DRybka4 1-0

Tom, The only thing that matters is how close you are to the top program. If you just measure improvement of each individual program it is based on how crappy it was at the point you start measuring. There was a point in time when Rybka 3 first came out that there was a huge gap in performance betw...
by Tom Barrister
Tue Nov 30, 2010 8:16 pm
Forum: Computer Chess Club: General Topics
Topic: TEST position TCEC5- Houdini 1.03a-DRybka4 1-0
Replies: 105
Views: 24787

Re: TEST position TCEC5- Houdini 1.03a-DRybka4 1-0

(excerpts) The point you are choosing to completely miss is that Vas did what no other program has done since - he put a huge amount of ELO distance between himself and the others. Pick your favorite clone and tell me how many hundred of ELO it is ahead of Rybka - and then we can talk. I will respe...