Search found 167 matches

by OliverUwira
Thu Sep 23, 2010 6:08 pm
Forum: Computer Chess Club: General Topics
Topic: The horizon effect
Replies: 26
Views: 4330

Re: The horizon effect

Isn't that strange? Without underpromotions the mate would show up earlier. Also zugzwang doesn't take part in the mating line.

Isn't it more likely that some White move gets pruned or reduced, so that it even takes a deeper search to discover it?
by OliverUwira
Thu Sep 23, 2010 10:23 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: ChessWar XVI Promo : list of participants
Replies: 6
Views: 718

Re: ChessWar XVI Promo : list of participants

Hello Olivier,

would it be possible to substitute the old version of Kurt (KURT 271009_ja, number 118) to a newer one? It can be found here:

http://home.arcor.de/steve-o13/kurt/kurt_0_9_beta.zip
by OliverUwira
Thu Sep 23, 2010 8:52 am
Forum: Computer Chess Club: General Topics
Topic: The horizon effect
Replies: 26
Views: 4330

Re: The horizon effect

Hi Don. I tried Rybka 3 on a Q6600 and Rybka hadn't a clue. Could you test it with Rybka 3 and 4? My Rybka 3 got it a depth 13. Stockfish 1.8 did only see it after it is shown 1.Nf6+. Same with my own engine. May I say that this is a really sick mating line after 1.Nf6+ Kg6 2.Bc2+ Kh5 3.d8Q ... two...
by OliverUwira
Thu Sep 23, 2010 8:26 am
Forum: Computer Chess Club: General Topics
Topic: The horizon effect
Replies: 26
Views: 4330

Re: The horizon effect

Hi Don. I tried Rybka 3 on a Q6600 and Rybka hadn't a clue. Could you test it with Rybka 3 and 4? My Rybka 3 got it a depth 13. Stockfish 1.8 did only see it after it is shown 1.Nf6+. Same with my own engine. May I say that this is a really sick mating line after 1.Nf6+ Kg6 2.Bc2+ Kh5 3.d8Q ... two...
by OliverUwira
Thu Sep 23, 2010 6:15 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One step forward again
Replies: 8
Views: 1970

Re: One step forward again

Same link: http://cap.connx.com/chess-engines/new-approach/kurt_0_9_beta.7z now has a PGO binary in it. It's only about 4% faster. That's still incredibly faster than the original one. So mostly this should be because VC++ Express can't do 64 bits. Apparently most of this speedup should be the bitb...
by OliverUwira
Wed Sep 22, 2010 9:31 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One step forward again
Replies: 8
Views: 1970

Re: One step forward again

Geez,

your binary is almost twice as fast on my laptop as mine... well, I'm just using VC++ Express so I can't compile for 64 bits...

Or were your minor tweaks actually big tweaks?

Many thanks anyway, especially for pointing out yet another bug.
by OliverUwira
Wed Sep 22, 2010 4:47 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: One step forward again
Replies: 8
Views: 1970

One step forward again

Hello everybody, it's been a long time since I've touched my engine, but recently I lay hands on Kurt again, and at least now I've got it to a point where it's giving me beating in blitz games. It also beats the old version but still doesn't stand much of a chance against the engines shipped with Ar...