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Simplify smallnet threshold

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Turns the quadratic threshold to a linear one

STC non-reg:
https://tests.stockfishchess.org/tests/view/665ba0b744e8416a9cdc188d
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 330432 W: 85351 L: 85454 D: 159627
Ptnml(0-2): 888, 39643, 84283, 39488, 914

LTC non-reg:
https://tests.stockfishchess.org/tests/view/665cd60ffd45fb0f907c4306
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 139146 W: 35194 L: 35093 D: 68859
Ptnml(0-2): 58, 15523, 38313, 15618, 61

closes https://github.com/official-stockfish/Stockfish/pull/5342

Bench: 1057383
This commit is contained in:
Gahtan Nahdi 2024-06-02 05:26:34 +07:00 • committed by Disservin
parent 924a843594
commit fe298953f8
1 changed files with 1 additions and 2 deletions
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3
src/evaluate.cpp
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@ -46,8 +46,7 @@ int Eval::simple_eval(const Position& pos, Color c) {
bool Eval::use_smallnet(const Position& pos) {
int simpleEval = simple_eval(pos, pos.side_to_move());
int pawnCount = pos.count<PAWN>();
return std::abs(simpleEval) > 992 + 6 * pawnCount * pawnCount / 16;
return std::abs(simpleEval) > 992 + 10 * pos.count<PAWN>();
}
// Evaluate is the evaluator for the outer world. It returns a static evaluation