Search found 328 matches

by zenpawn
Wed Aug 31, 2016 8:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Nullmove bugs
Replies: 30
Views: 4251

Re: Nullmove bugs

Is the nodetype != NodeTypePV condition a requirement of null move pruning? I ask because when I added that restriction, my search became painfully slow.
by zenpawn
Mon Aug 29, 2016 9:32 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Nullmove bugs
Replies: 30
Views: 4251

Re: Nullmove bugs

2: aren't you trying calling null move pruning when it's not necessary? for example when static_eval << beta Question about this. Does this mean the benefit of only checking the null move in eval > beta cases outweighs the cost of calculating the static evaluation at every node (vs just qsearch nod...
by zenpawn
Sun Aug 28, 2016 1:14 pm
Forum: Computer Chess Club: General Topics
Topic: How to win from Stockfish within 20 moves
Replies: 15
Views: 3287

Re: How to win from Stockfish within 20 moves

Henk wrote:Yes first draw ever when playing against Stockfish. Although time control bit eccentric.
Where is the draw here ?
QPPPK vs K is not a draw
:wink:
A "win" on time with insufficient mating material is just a draw.
by zenpawn
Sat Aug 27, 2016 11:25 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish eval output
Replies: 14
Views: 2800

Re: Stockfish eval output

Yeah, guess I was just hoping for it to have a line in the table. Still a nice display nonetheless. On the topic of static evals, is there a way/program to run through a PGN to get the evaluations of the positions along the way without the engine doing any search? I came close by setting Fritz 15 to...
by zenpawn
Sat Aug 27, 2016 9:44 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney August
Replies: 45
Views: 5807

Re: On-line engine blitz tourney August

Congrats everyone! At least got to watch some games, and found it to be a fun little tourney with a good mix of engines.

Question: What do the +/-s in front of the names indicate? They don't seem to correlate with the performance vs rating.
by zenpawn
Sat Aug 27, 2016 7:34 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney August
Replies: 45
Views: 5807

Re: On-line engine blitz tourney August

That's OK. I did login as a guest for a while and even joined a tourney that seemed to be yours, but I couldn't see anything happening, so figured I wasn't really in (that you had to be registered to participate).
by zenpawn
Sat Aug 27, 2016 7:01 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney August
Replies: 45
Views: 5807

Re: On-line engine blitz tourney August

Henk wrote:I think only a good internet connection, a winboard version, an account and a reasonable working chess engine.
An account where exactly?

Thanks,
-Erin
by zenpawn
Sat Aug 27, 2016 4:07 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish eval output
Replies: 14
Views: 2800

Stockfish eval output

In the following technically drawn ending, it's no surprise Stockfish recognizes the situation without need of a search or EGT. The static eval gives white a symbolic edge of 0.08. Unfortunately, the pretty output doesn't show what it's using to offset the material difference, even if that's just a ...