Search found 400 matches

by Ralph Stoesser
Wed Feb 18, 2015 10:28 pm
Forum: Computer Chess Club: General Topics
Topic: Kingside fianchetto
Replies: 43
Views: 4659

Re: Kingside fianchetto

I'm not at my computer right now and I believe that top engines will find fast that black is better in that last position you gave, but only by search. Static eval should favour white here, not only because of the material advantage. Do you know how to get the static eval printout for a position in ...
by Ralph Stoesser
Wed Feb 18, 2015 12:02 am
Forum: Computer Chess Club: General Topics
Topic: Kingside fianchetto
Replies: 43
Views: 4659

Re: Kingside fianchetto

In SF there is a tricky static eval term that gives an opening/midgame bonus for a minor behind a pawn of the same color. It is not a genuine idea from SF developers if I remember right, but stems from Don Daily. However, that bonus should help a bit to encourage an early fianchetto development, but...
by Ralph Stoesser
Tue Sep 09, 2014 8:13 pm
Forum: Computer Chess Club: General Topics
Topic: The dedicated chess computer thread
Replies: 38
Views: 10016

Re: The dedicated chess computer thread

Those were the golden years, like it was a magic device that you could play against. I owned three of them in my lifetime. The Chess Challenger 3,NOVAG Constellation 3.6MHz, & the Mach III. The Mach III was particularly strong. Is the magic gone if you run Stockfish on your computer. And if so why ...
by Ralph Stoesser
Tue Jul 22, 2014 7:09 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Development Environment
Replies: 32
Views: 8032

Re: Development Environment

vim for editing
gcc to compile
printf, gdb, valgrind for debugging
git for version control
8-)
by Ralph Stoesser
Sat May 17, 2014 9:51 am
Forum: Computer Chess Club: General Topics
Topic: What is a backward pawn?
Replies: 67
Views: 6706

Re: What is a backward pawn?

My take on this is that you are somewhat mixing terms. A pawn that is defended by a pawn is not considered backward in any book I have (g6 in your first example as it is defended by h7). The fact that it can not safely advance is not so important when it is perfectly safe where it is. If you want t...
by Ralph Stoesser
Mon Mar 31, 2014 4:47 am
Forum: Computer Chess Club: General Topics
Topic: Good news
Replies: 67
Views: 5958

Re: Another Equinox lesson

The conditions should be: Side to award the bonus (bishop side) has (1) less total non pawn material than the 3/2 * value of one queen (2) exactly one bishop Opposite side has (1) at least one knight Additional condition: there is at least one pawn (regardless of whether white or black) on the king...
by Ralph Stoesser
Sun Mar 30, 2014 8:27 pm
Forum: Computer Chess Club: General Topics
Topic: Good news
Replies: 67
Views: 5958

Re: Another Equinox lesson

I think in the position from Peter the bonus shouldn't be applied. If Peter would apply that rule the eval for this position would become even worse. I don't quite understand the reasoning behind the change of that rule. Is that 'official' chess knowlegde or was it invented by you, Lyudmil? Maybe it...
by Ralph Stoesser
Sun Mar 30, 2014 2:39 pm
Forum: Computer Chess Club: General Topics
Topic: Good news
Replies: 67
Views: 5958

Re: Another Equinox lesson

Thank you very much Ralph. Now I understand what has been going wrong and how successful ideas could fail because of implementation. I think the 2 conditions for the other side should necessarily be: 1. to have a knight (so a rook instead of a knight would not qualify) 2. to have pawns on both wing...
by Ralph Stoesser
Sun Mar 30, 2014 1:26 pm
Forum: Computer Chess Club: General Topics
Topic: Good news
Replies: 67
Views: 5958

Re: Another Equinox lesson

The proposal perfectly fits my vision, with the additional condition that when the side to award the bonus to has pair of bishops, the bonus for B vs N is not awarded to avoid redundancy. Ok, so no distinction between bishop pair + pawns on both wings vs bishop pair + pawns on one wing. So the cond...
by Ralph Stoesser
Sun Mar 30, 2014 11:50 am
Forum: Computer Chess Club: General Topics
Topic: Good news
Replies: 67
Views: 5958

Re: Another Equinox lesson

I don't know which version you have tested to come to the conclusion that SF evaluates this position as +20 cps for white. [d]1R6/5pkp/4b1p1/8/p1P5/r3NP1P/5KP1/8 w - - 0 55 Stockfish 300314 64 by Tord Romstad, Marco Costalba and Joona Kiiski position fen 1R6/5pkp/4b1p1/8/p1P5/r3NP1P/5KP1/8 w - - 0 5...