Search found 46 matches

by Martin Brown
Mon Apr 23, 2012 10:19 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Your first chess program.
Replies: 43
Views: 7653

Re: Your first chess program.

I wrote a DOS-based program in Modula-2 back in 1991-2. It was never released. It had an integrated user interface written in assembly language, using direct video writes, supporting VGA and Hercules graphics modes (if you remember Hercules, you are an old-timer like me). The graphics was probably ...
by Martin Brown
Mon Apr 23, 2012 9:36 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Your first chess program.
Replies: 43
Views: 7653

Re: Your first chess program.

Programmers, How did you get into chess programming? What was your first program like? Not mine but the first computer chess I ever ran into was Arthur Norman's PDP-2 assembler program which dates from about 1974. A fair amount of the code was dedicated to driving a vector graphics display screen. ...
by Martin Brown
Mon Nov 28, 2011 8:36 pm
Forum: Computer Chess Club: General Topics
Topic: Rybka Vs Humans: clarification
Replies: 31
Views: 4606

Re: Rybka Vs Humans: clarification

Is this a joke? Why would there be any interest in seeing a bunch of players who are either IM or just hoping to become IM play Rybka on even terms? I mean it's possible that one of them might get a draw, but basically it's like watching Carlsen or Anand play a bunch of 1900 players. Certainly Rybk...
by Martin Brown
Mon Nov 28, 2011 5:31 pm
Forum: Computer Chess Club: General Topics
Topic: Phantom Draw - test position
Replies: 10
Views: 1720

Re: Phantom Draw - test position

Not only misannotate games but also to be vulnerable to best move avoidance in game play if a partial repetition sequence can be forced. The Fritz10 engine played Nxg2 losing the queen to avoid moving it back to d4 and creating a phantom draw via Rc1. But in normal circumstances an engine playing b...
by Martin Brown
Fri Nov 25, 2011 2:35 pm
Forum: Computer Chess Club: General Topics
Topic: Phantom Draw - test position
Replies: 10
Views: 1720

Re: Phantom Draw - test position

The bug is due to the fact that engines often do not distinguish between repetitions in search and in the game history. This causes the engine to misannotate games. Not only misannotate games but also to be vulnerable to best move avoidance in game play if a partial repetition sequence can be force...
by Martin Brown
Thu Nov 24, 2011 9:58 am
Forum: Computer Chess Club: General Topics
Topic: Best Engine for Game Analysis and Annotation?
Replies: 6
Views: 1708

Re: Best Engine for Game Analysis and Annotation?

"its irritating "human friendly" commentary" Irritating or hilarious? Typical comment: "This doesn't save the day"! Thanks so much, I couldn't understand it, looking simply to evaluations... :lol: My pet hate is something about "Bullocks off the ice". I presume it must be a German saying that loses...
by Martin Brown
Wed Nov 23, 2011 10:36 am
Forum: Computer Chess Club: General Topics
Topic: Best Engine for Game Analysis and Annotation?
Replies: 6
Views: 1708

Re: Best Engine for Game Analysis and Annotation?

Thanks. Unfortunately that isn't a UCI engine and so doesn't take programming commands like I need it to... Any other ideas!? Fritz GUI can add some verbose analysis as well. Even though (through inertia) I mostly use the Fritz GUI I would find it very hard to recommend its irritating "human friend...
by Martin Brown
Wed Nov 23, 2011 9:22 am
Forum: Computer Chess Club: General Topics
Topic: Phantom Draw - test position
Replies: 10
Views: 1720

Re: Phantom Draw - test position

Chessbase v10 and major engines which fell for Nxg2 included Junior7, Fritz8, Fritz10, Rybka2.32 and Stockfish 1.51 OK some of them are perhaps a bit long in the tooth but I was a bit surprised by Fritz 10 failing to annotate the game correctly. I will give the engines you have suggested a whirl. Th...
by Martin Brown
Tue Nov 22, 2011 8:52 pm
Forum: Computer Chess Club: General Topics
Topic: Phantom Draw - test position
Replies: 10
Views: 1720

Phantom Draw - test position

[D] r2r2k1/pp3pbp/2p1b1p1/8/P2qPP2/1P1pnQ2/3N1RBP/2R1N2K b - - 0 25 In this quirky position black makes a mistake and plays 25. ... Qb2 White's only plausible response is 26. Rb1 and then strong engines miss blacks crucial winning continuation of 26. ... Qd4 blinded by white 27. Rc1 which offers a b...
by Martin Brown
Wed Apr 14, 2010 4:32 pm
Forum: Computer Chess Club: General Topics
Topic: Mate in 1, 2 CD recommendation?
Replies: 11
Views: 1375

Re: Mate in 1, 2 CD recommendation?

Take a look for TASC Chess training CD 2.

It does a bit more than you asked for and is a bit long in the tooth (won't run on Vista) but is otherwise very good for school level chess training.

There are online collections of mate in N you could grab for free.