Yes, there is a problem, rybka does not have as much chess knowledge as GM Nakamura nor Anand. It is NOT just with a block position take a look at this game.Laskos wrote:No problem, put the contempt at 3.00 and Rybka will be going to crush you.pichy wrote:I have something to add, in the beginning back in the 80's when programs did not have opening or ending databases they were very weak programs, later besides adding databases, more knowledge was added and chess programs became stronger and stronger. A program that does not have the knowledge of sacrificing a pawn or two specially when it is ahead in order to break through a fortress of pawns barrier it is still a weak program when matched against a strong human that knows how to block a position. Therefore, Rybka is still a weak chess program.Terry McCracken wrote:I have quickly looked over the first game you presented, it has nothing to do with weak hardware or software but everything to do with how to beat these programs.pichy wrote:Here are two more matches versus Rybka:pichy wrote:pichy wrote:Computer at blitz should be almost unbeatable, this is the reason why I do NOT consider the high rating of the top 5 programs to be taken too seriously when matched versus a top GM that knows how to block a position:roll:
PS: Unless programs are programmed to sacrifice a pawn or two in order to break through the position a great program like Rybka is still too materialistic vs a GM and at the end it runs out of time and suffer positionally and give up material. Notice how GM Nakamura was down-trading pieces with the program knowing that Rybka was blocked with the pawns and at the end it will not sacrifice a pawn or two to break the position
http://www.chessgames.com/perl/chessgame?gid=1497429
http://www.chessgames.com/perl/chess.pl ... pid2=10084
He knows how.
PS: I should NOT say that Rybka is a weak chess program, it is the strongest program available, but most strong human GMs have more chess knowledge than rybka, and blocking and being able to unblock a position any strong human GM or even a master is capable of doing it when they are ahead in material.
Kai
http://www.chessgames.com/perl/chessgame?gid=1497426