Search found 230 matches

by Marc Lacrosse
Fri Oct 05, 2007 11:37 am
Forum: Computer Chess Club: General Topics
Topic: 3 testpositions..... 1 pretty for humans too! :-)
Replies: 15
Views: 5116

Re: 3 testpositions..... 1 pretty for humans too! :-)

Edsel Apostol wrote:Kf3 then. :D
No :roll:

1.Kf3 Bd4! and the mate is still far, far away ...
by Marc Lacrosse
Fri Oct 05, 2007 9:39 am
Forum: Computer Chess Club: General Topics
Topic: 3 testpositions..... 1 pretty for humans too! :-)
Replies: 15
Views: 5116

Re: 3 testpositions..... 1 pretty for humans too! :-)

Edsel Apostol wrote:
Very nice.
I was lucky enough to see the solution quickly.
For those who need help : why are there pawns on b2 and b3?

Another nice one for humans only (#4) :

[D]8/8/8/8/6N1/6p1/4K1p1/R3B1bk w - - 0 1

Marc
Ra5!
1.Ra5 ? Bc5! and then the g pawn queens ...
by Marc Lacrosse
Fri Oct 05, 2007 9:36 am
Forum: Computer Chess Club: General Topics
Topic: 3 testpositions..... 1 pretty for humans too! :-)
Replies: 15
Views: 5116

Re: 3 testpositions..... 1 pretty for humans too! :-)

Edsel Apostol wrote:I think the winning move is Nh8!!!

Edsel Apostol (Twisted Logic)
No no no

1. Nh8 KxN?? 2. Bg6 3. Ra8 works ...

But on 1. Nh8 Black moves his g pawn ...
by Marc Lacrosse
Fri Oct 05, 2007 5:50 am
Forum: Computer Chess Club: General Topics
Topic: 3 testpositions..... 1 pretty for humans too! :-)
Replies: 15
Views: 5116

Re: 3 testpositions..... 1 pretty for humans too! :-)

This is for humans. White to play and mate in 3 moves. I don't know why are those pawns there. My solution is 1.Be8 Kg8 2.Ke6 Kh7 3. Kf5 Kg8 4. Ra8 Kh7 5. Rb8 Kg8 6. Bd7+ and mate next move. So those little pawns look irrelevant. I guess there is another solution. Telmo White to play and mate in 3 ...
by Marc Lacrosse
Mon Oct 01, 2007 3:19 pm
Forum: Computer Chess Club: General Topics
Topic: 3 testpositions..... 1 pretty for humans too! :-)
Replies: 15
Views: 5116

Re: 3 testpositions..... 1 pretty for humans too! :-)

This is for humans. White to play and mate in 3 moves. One of the best i know! I couldn't find it.... :roll: [d]8/4KBpk/R5Np/7p/7P/1p6/1P6/8 w - - 0 1 Very nice. I was lucky enough to see the solution quickly. For those who need help : why are there pawns on b2 and b3? Another nice one for humans o...
by Marc Lacrosse
Thu Sep 27, 2007 12:47 pm
Forum: Computer Chess Club: General Topics
Topic: Effect of "Own Book" vs Generic book
Replies: 15
Views: 5147

Re: Effect of "Own Book" vs Generic book

hgm wrote: Isn't this already done? I remember to have seen a test, either here or on the Winboard forum, where 6 top engines with book and the same 6 top engines without book played a round-robin with a large number of games.
http://users.skynet.be/mlcc/chessbazaar ... -book.html
by Marc Lacrosse
Sat Sep 15, 2007 9:49 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Program for running test games
Replies: 2
Views: 1393

Re: Program for running test games

I've always done my testing via 20-40 game matches against a single opponent directly through WinBoard. The recent discussions have given me the itch to enhance this process. What program is best to manage this? It seems like there are several possibilities -- JorisWBTM and Galis come to mind immed...
by Marc Lacrosse
Thu Sep 06, 2007 4:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: nondeterministic testing
Replies: 86
Views: 34918

Re: nondeterministic testing

The bottom line is that the only practical solution is a _bunch_ of games. Anything else leads to reduced (significantly reduced) accuracy. I'm working on a paper for the JICGA that really illustrates how this variability is created, and the effect it has on games. It will convince anyone testing t...
by Marc Lacrosse
Wed Sep 05, 2007 9:17 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: nondeterministic testing
Replies: 86
Views: 34918

Re: nondeterministic testing

I am in the process of developing a better testing strategy (...) What time controls do others use? Is there a "shortcut" I'm missing for testing eval changes? Seems to be as much art as science. (...) I don't think it's art. First off all if you decide not to go for the perfect situation (a very v...
by Marc Lacrosse
Fri Aug 31, 2007 10:57 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI and Linux
Replies: 14
Views: 6597

Re: UCI and Linux

Hehe, they arn't that easy to compile but hopefully in the future I'll make it easy. 8-) I'll try to get a pre-built binary going for Linux this weekend. By the way Pradu i think there is a tiny annoying bug that you could correct altogether. Whenever a tournament finishes here it seems that the "s...