Stockfish dev - 15 Jul 2014

Stockfish dev - 15 Jul 2014:-

Stockfish dev - 15 Jul 2014 : http://abrok.eu/stockfish/

Simplify evaluate_passed_pawns

Contempt = 20
Also raise the admissible bounds to (-100,100), as there is no reason to prevent users from using high
values if they want to.

Does not regress in self play:
ELO: 0.10 +-2.0 (95%) LOS: 53.7%
Total: 40000 W: 7084 L: 7073 D: 25843

master vs SF 3
ELO: 182.86 +-2.7 (95%) LOS: 100.0%
Total: 40000 W: 21843 L: 2541 D: 15616

Contempt = 20 vs SF 3
ELO: 189.25 +-2.8 (95%) LOS: 100.0%
Total: 40000 W: 22721 L: 2859 D: 14420

Diff is therefore 6.4 +/- 3.9 elo against a 180-190 elo weaker engine, which is significantly positive,
as expected. This elo difference is likely understated, because of FishTest aggressive draw adjudication
though.

We could push Contempt further, but after 20cp, it would get in the way of FishTest draw adjudication
rule, and is likely to reduce the testing throughput as a result.

Author: Marco Costalba
Date: Tue Jul 15 20:59:32 2014 +0800
Timestamp: 1405429172

Simplify evaluate_passed_pawns

From a suggestion by David Zar.

No functional change.

http://abrok.eu/stockfish/

Author: Ronald de Man
Date: Tue Jul 15 19:59:16 2014 +0200
Timestamp: 1405447156

Merge remote-tracking branch 'upstream/master'

http://abrok.eu/stockfish_syzygy/