// En passant move? We assume that a pawn move is an en passant move
// if the destination square is epSquare.
if (to == pos.ep_square() && piece == piece_of_color_and_type(us, PAWN))
- make_ep_move(from, to);
+ return make_ep_move(from, to);
// Is this a castling move? A king move is assumed to be a castling move
// if the destination square is occupied by a friendly rook, or if the