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Simplify pieceValue to one phase.

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Simplifies the usage of pieceValues to mg values with the exception of pawnValues, After the removal of PSQT.

passed STC:
https://tests.stockfishchess.org/tests/view/64d147845b17f7c21c0dd86c
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 197248 W: 50168 L: 50125 D: 96955
Ptnml(0-2): 651, 23029, 51222, 23070, 652

passed LTC:
https://tests.stockfishchess.org/tests/view/64d212de5b17f7c21c0debbb
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 181170 W: 45949 L: 45893 D: 89328
Ptnml(0-2): 84, 19656, 51052, 19706, 87

closes https://github.com/official-stockfish/Stockfish/pull/4734

Bench: 1494401
This commit is contained in:
Shahin M. Shahin
2023-08-07 22:27:12 +03:00
committed by Disservin
parent 495852fecd
commit 3322349c1a
5 changed files with 24 additions and 32 deletions
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src/search.cpp
+3 -3
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@@ -985,7 +985,7 @@ moves_loop: // When in check, search starts here
if ( !givesCheck
&& lmrDepth < 7
&& !ss->inCheck
&& ss->staticEval + 197 + 248 * lmrDepth + PieceValue[EG][pos.piece_on(to_sq(move))]
&& ss->staticEval + 197 + 248 * lmrDepth + PieceValue[pos.piece_on(to_sq(move))]
+ captureHistory[movedPiece][to_sq(move)][type_of(pos.piece_on(to_sq(move)))] / 7 < alpha)
continue;
@@ -1535,7 +1535,7 @@ moves_loop: // When in check, search starts here
if (moveCount > 2)
continue;
futilityValue = futilityBase + PieceValue[EG][pos.piece_on(to_sq(move))];
futilityValue = futilityBase + PieceValue[pos.piece_on(to_sq(move))];
if (futilityValue <= alpha)
{
@@ -1783,7 +1783,7 @@ moves_loop: // When in check, search starts here
// RootMoves are already sorted by score in descending order
Value topScore = rootMoves[0].score;
int delta = std::min(topScore - rootMoves[multiPV - 1].score, PawnValueMg);
int delta = std::min(topScore - rootMoves[multiPV - 1].score, PawnValue);
int maxScore = -VALUE_INFINITE;
double weakness = 120 - 2 * level;