jirayu_sri/stockfish
1
0
Fork 0
mirror of https://github.com/official-stockfish/Stockfish.git synced 2026-07-22 12:47:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add en passant santization tests to the CI and pos is ok

Browse Source 
closes https://github.com/official-stockfish/Stockfish/pull/6615

No functional change
This commit is contained in:
rn5f107s2
2026-02-18 21:39:06 +01:00
committed by Joost VandeVondele
parent cf559b2c17
commit 5b5986b095
3 changed files with 126 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/position.cpp
+17
View File
@@ -1515,6 +1515,23 @@ bool Position::pos_is_ok() const {
if ((pieces(PAWN) & (Rank1BB | Rank8BB)) || pieceCount[W_PAWN] > 8 || pieceCount[B_PAWN] > 8)
assert(0 && "pos_is_ok: Pawns");
if (ep_square() != SQ_NONE)
{
Square ksq = square<KING>(sideToMove);
Bitboard captured = (ep_square() + pawn_push(~sideToMove)) & pieces(~sideToMove, PAWN);
Bitboard pawns = attacks_bb<PAWN>(ep_square(), ~sideToMove) & pieces(sideToMove, PAWN);
Bitboard potentialCheckers = pieces(~sideToMove) ^ captured;
if (!captured || !pawns
|| ((attackers_to(ksq, pieces() ^ captured ^ ep_square() ^ lsb(pawns))
& potentialCheckers)
&& (attackers_to(ksq, pieces() ^ captured ^ ep_square() ^ msb(pawns))
& potentialCheckers)))
assert(0 && "pos_is_ok: En passant square");
}
if ((pieces(WHITE) & pieces(BLACK)) || (pieces(WHITE) | pieces(BLACK)) != pieces()
|| popcount(pieces(WHITE)) > 16 || popcount(pieces(BLACK)) > 16)
assert(0 && "pos_is_ok: Bitboards");