From: joergoster <osterj165@googlemail.com>
Date: Wed, 6 Aug 2014 10:36:04 +0000 (+0800)
Subject: Remove insufficient material rule
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=9da015517c20e9c5b8e0ef6e7103e60404211baa;hp=9da015517c20e9c5b8e0ef6e7103e60404211baa

Remove insufficient material rule
The eval already returns zero in KK, KBK, KNK (see material.cpp). The difference is:
- we lose the "TB pruning" benefit of the draw rule (ie. search goes on even if eval is zero)
- we gain some speed by removing a useless test from the hot path

STC:
LLR: 0.05 (-2.94,2.94) [-3.00,1.00]
Total: 128000 W: 21357 L: 21560 D: 85083

LTC:
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 33023 W: 4613 L: 4509 D: 23901

bench 7461881
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