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Merge pull request #3496 from Sopel97/fix_discrep

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Fix discrepancy for ep square between set and move in the binpack lib.
This commit is contained in:
Joost VandeVondele
2021-05-24 22:43:14 +02:00
committed by GitHub
parent 911629a118 ca365f17ba
commit ed8b381cce
1 changed files with 4 additions and 8 deletions
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12
src/extra/nnue_data_binpack_format.h
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@@ -6078,18 +6078,14 @@ namespace chess
// for double pushes move index differs by 16 or -16;
if((movedPiece == PieceType::Pawn) & ((ordinal(move.to) ^ ordinal(move.from)) == 16))
{
const Square potentialEpSquare = fromOrdinal<Square>((ordinal(move.to) + ordinal(move.from)) >> 1);
// Even though the move has not yet been made we can safely call
// this function and get the right result because the position of the
// pawn to be captured is not really relevant.
if (isEpPossible(potentialEpSquare, !m_sideToMove))
{
m_epSquare = potentialEpSquare;
}
m_epSquare = fromOrdinal<Square>((ordinal(move.to) + ordinal(move.from)) >> 1);
}
const Piece captured = BaseType::doMove(move);
m_sideToMove = !m_sideToMove;
nullifyEpSquareIfNotPossible();
return { move, captured, oldEpSquare, oldCastlingRights };
}