Search found 55 matches

by RolandoFurioso
Thu Jul 24, 2014 2:01 pm
Forum: Computer Chess Club: General Topics
Topic: Engines can't solve this puzzle (even not Stockfish 5)
Replies: 37
Views: 6713

Re: Engines can't solve this puzzle (even not Stockfish 5)

Not exactly. Strong engines also have extensions so 36 plies can mean more than 36 plies in the longest selected branches. Sure. Typically, the search depth reported by an engine represents a "base" search depth which, however, is variation-locally modified by numerous extensions and reductions as ...
by RolandoFurioso
Tue Jul 22, 2014 4:11 pm
Forum: Computer Chess Club: General Topics
Topic: Engines can't solve this puzzle (even not Stockfish 5)
Replies: 37
Views: 6713

Re: Engines can't solve this puzzle (even not Stockfish 5)

Maybe the palliatives like null move search = off or Monte Carlo can help you. The next version of Sting (not published yet) gets it quikly. I wrote about it (http://talkchess.com/forum/viewtopic.php?t=52829). It is one of the most difficult positions to solve. Of course, these are the most natural...
by RolandoFurioso
Tue Jul 22, 2014 4:01 pm
Forum: Computer Chess Club: General Topics
Topic: Engines can't solve this puzzle (even not Stockfish 5)
Replies: 37
Views: 6713

Re: Engines can't solve this puzzle (even not Stockfish 5)

Of course, much depends upon move ordering and extensions/reductions employed. I've just checked it with my own engine Fischerle 0.9.50 64 Bit. Employing just the standard (match play rather than chess problem solving) settings and allocating 256 MB hash, Fischerle finds the solution (mate in 18) in...
by RolandoFurioso
Wed Jul 16, 2014 1:10 am
Forum: Computer Chess Club: General Topics
Topic: Why are there no women at Computer Chess Club??
Replies: 23
Views: 4571

Re: Why are there no women at Computer Chess Club??

:?: :?: Women play chess and use computer chess software!! In fact, there are some, but admittedly very few, women who actively contrbute, or contributed, to the field of computer chess. Just browse down this list: http://chessprogramming.wikispaces.com/People Moreover, there are some very famous l...
by RolandoFurioso
Mon Jun 02, 2014 4:27 pm
Forum: Computer Chess Club: General Topics
Topic: A poll to gauge interest in possible tournament
Replies: 44
Views: 8457

Re: A poll to gauge interest in possible tournament

How about running a tournament with tablebases off *and* without employing tablebases for adjudication? That is, to play the games until the bitter (or sweet) end, thus testing the endgame capabilities of the engines? This should be very entertaining. Of course, one should employ a fixed time limit ...
by RolandoFurioso
Thu May 15, 2014 4:41 pm
Forum: Computer Chess Club: General Topics
Topic: New Fischerle Versions (64 and 32 Bit)
Replies: 8
Views: 1529

Re: The final response ! -:)

Of course, Fischerle is comparatively memory-hungry, employing several large arrays of supplementary bit patterns for fast bitboard-based chess-related test and evaluation operations. (Moreover, it's a tribute to Java itself, which probably consumes more menory than other, "leaner" languages.) Howev...
by RolandoFurioso
Thu May 15, 2014 1:28 pm
Forum: Computer Chess Club: General Topics
Topic: New Fischerle Versions (64 and 32 Bit)
Replies: 8
Views: 1529

Re: The final response ! -:)

Hi Gabor, the results that you're reporting are perfectly in line with the expectations! You're employing one 64 bit environment and one 32 bit environment. The 64 bit JRE maps the bytecode to the 64-bit instruction set of your processor, while the 32 bit Java doesn't make use of the 64 bit instruct...
by RolandoFurioso
Thu May 15, 2014 11:28 am
Forum: Computer Chess Club: General Topics
Topic: New Fischerle Versions (64 and 32 Bit)
Replies: 8
Views: 1529

Re: The final response ! -:)

Thank you, Roland. I may be hopeless but I would like to ask how does the bat file know which java environment to use when I have both 32-bit and 64-bit java environment installed and my operating system is 64-bit. Hi Gabor ! In short: 1.-Java bytecode (and source code) is platform independent, ass...
by RolandoFurioso
Thu May 15, 2014 11:13 am
Forum: Computer Chess Club: General Topics
Topic: New Fischerle Versions (64 and 32 Bit)
Replies: 8
Views: 1529

Re: The final response ! -:)

Hi Gabor, which Java version will be employed depends upon the setting of some environment variables of your operating system. Generally speaking, there is a variable called $PATH or so that specifies a list of directories and thus determines the order in which they are searched for a program with n...
by RolandoFurioso
Thu May 15, 2014 12:09 am
Forum: Computer Chess Club: General Topics
Topic: New Fischerle Versions (64 and 32 Bit)
Replies: 8
Views: 1529

New Fischerle Versions (64 and 32 Bit)

Hi all, I have just released a follow-up version of my chess engine: Fischerle_0_9_50 . It is available for download at http://www.stuckardt.de/index.php/schachengine-fischerle.html The main new features are: - the king plays a more active role in late middlegame / early endgame; - most instances of...