}
if (! board_move_legal (&game->board, x1, y1, x2, y2, &error)) {
- loudgame_sendf (&game->lg, peer, "Illegal move: %s.");
+ loudgame_sendf (&game->lg, peer, "Illegal move: %c%d%c%d",
+ 'a' + x1, BOARD_SIZE - y1,
+ 'a' + x2, BOARD_SIZE - y2);
return FALSE;
}