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Simplify attackUnits formula

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Use '/ 8' instead of '* 31 / 256'

Passed STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 55077 W: 10999 L: 10940 D: 33138

And LTC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 14751 W: 2530 L: 2400 D: 9821

bench: 7911944
This commit is contained in:
Marco Costalba 2015-02-17 08:23:35 +01:00
parent d65f75c153
commit 6656ed8904
1 changed files with 3 additions and 3 deletions
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6
src/evaluate.cpp
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@ -414,10 +414,10 @@ namespace {
// attacked and undefended squares around our king and the quality of
// the pawn shelter (current 'score' value).
attackUnits = std::min(74, ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them])
+ 8 * ei.kingAdjacentZoneAttacksCount[Them]
+ 8 * ei.kingAdjacentZoneAttacksCount[Them]
+ 25 * popcount<Max15>(undefended)
+ 11 * (ei.pinnedPieces[Us] != 0)
- mg_value(score) * 31 / 256
+ 11 * (ei.pinnedPieces[Us] != 0)
- mg_value(score) / 8
- !pos.count<QUEEN>(Them) * 60;
// Analyse the enemy's safe queen contact checks. Firstly, find the