<< std::setfill(' ') << std::dec << "\nCheckers: ";
for (Bitboard b = pos.checkers(); b; )
- os << UCI::square(pop_lsb(&b)) << " ";
+ os << UCI::square(pop_lsb(b)) << " ";
if ( int(Tablebases::MaxCardinality) >= popcount(pos.pieces())
&& !pos.can_castle(ANY_CASTLING))
Square kto = relative_square(c, cr & KING_SIDE ? SQ_G1 : SQ_C1);
Square rto = relative_square(c, cr & KING_SIDE ? SQ_F1 : SQ_D1);
- castlingPath[cr] = (between_bb(rfrom, rto) | between_bb(kfrom, kto) | rto | kto)
+ castlingPath[cr] = (between_bb(rfrom, rto) | between_bb(kfrom, kto))
& ~(kfrom | rfrom);
}
for (Bitboard b = pieces(); b; )
{
- Square s = pop_lsb(&b);
+ Square s = pop_lsb(b);
Piece pc = piece_on(s);
si->key ^= Zobrist::psq[pc][s];
while (snipers)
{
- Square sniperSq = pop_lsb(&snipers);
+ Square sniperSq = pop_lsb(snipers);
Bitboard b = between_bb(s, sniperSq) & occupancy;
if (b && !more_than_one(b))
if (more_than_one(checkers()))
return false;
- // Our move must be a blocking evasion or a capture of the checking piece
- if (!((between_bb(lsb(checkers()), square<KING>(us)) | checkers()) & to))
+ // Our move must be a blocking interposition or a capture of the checking piece
+ if (!(between_bb(square<KING>(us), lsb(checkers())) & to))
return false;
}
// In case of king moves under check we have to remove king so as to catch
if ((swap = PawnValueMg - swap) < res)
break;
- occupied ^= lsb(bb);
+ occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN);
}
if ((swap = KnightValueMg - swap) < res)
break;
- occupied ^= lsb(bb);
+ occupied ^= least_significant_square_bb(bb);
}
else if ((bb = stmAttackers & pieces(BISHOP)))
if ((swap = BishopValueMg - swap) < res)
break;
- occupied ^= lsb(bb);
+ occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN);
}
if ((swap = RookValueMg - swap) < res)
break;
- occupied ^= lsb(bb);
+ occupied ^= least_significant_square_bb(bb);
attackers |= attacks_bb<ROOK>(to, occupied) & pieces(ROOK, QUEEN);
}
if ((swap = QueenValueMg - swap) < res)
break;
- occupied ^= lsb(bb);
+ occupied ^= least_significant_square_bb(bb);
attackers |= (attacks_bb<BISHOP>(to, occupied) & pieces(BISHOP, QUEEN))
| (attacks_bb<ROOK >(to, occupied) & pieces(ROOK , QUEEN));
}
Square s1 = from_sq(move);
Square s2 = to_sq(move);
- if (!(between_bb(s1, s2) & pieces()))
+ if (!((between_bb(s1, s2) ^ s2) & pieces()))
{
if (ply > i)
return true;