}
}
- // En passant capture with check? We have already handled the case
+ // En passant capture with check ? We have already handled the case
// of direct checks and ordinary discovered check, the only case we
- // need to handle is the unusual case of a discovered check through the
- // captured pawn.
+ // need to handle is the unusual case of a discovered check through
+ // the captured pawn.
if (move_is_ep(m))
{
Square capsq = make_square(square_file(to), square_rank(from));
Square from = move_from(m);
Square to = move_to(m);
- // Early return if SEE cannot be negative because capturing piece value
- // is not bigger then captured one.
- if ( midgame_value_of_piece_on(from) <= midgame_value_of_piece_on(to)
- && type_of_piece_on(from) != KING)
- return 1;
+ // Early return if SEE cannot be negative because captured piece value
+ // is not less then capturing one. Note that king moves always return
+ // here because king midgame value is set to 0.
+ if (midgame_value_of_piece_on(to) >= midgame_value_of_piece_on(from))
+ return 1;
return see(from, to);
}