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A combo of parameter tweaks

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Joint work by SFisGOD, xoroshiro and Chess13234.

This combo consists of the following tweaks:
Assorted bonuses and penalties by SFisGOD
Bishop and Rook PSQT by SFisGOD
Tempo Value by xoroshiro
Futility pruning by Chess13234

STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 9005 W: 2082 L: 1882 D: 5041
http://tests.stockfishchess.org/tests/view/5c11628c0ebc5902ba119e90

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 44207 W: 7451 L: 7157 D: 29599
http://tests.stockfishchess.org/tests/view/5c1172a40ebc5902ba119fa3

Bench: 3332460
This commit is contained in:
SFisGOD
2018-12-13 03:34:17 +08:00
committed by Stéphane Nicolet
parent 883367d217
commit 31ac538f96
4 changed files with 36 additions and 36 deletions
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2
src/search.cpp
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@@ -764,7 +764,7 @@ namespace {
|| (ss-2)->staticEval == VALUE_NONE;
// Step 8. Futility pruning: child node (~30 Elo)
if ( !rootNode
if ( !PvNode
&& depth < 7 * ONE_PLY
&& eval - futility_margin(depth, improving) >= beta
&& eval < VALUE_KNOWN_WIN) // Do not return unproven wins