opti but not sure if it's enought

game_tools.c

@@ -502,7 +502,7 @@ uint game_nb_solutions(cgame g) {
 	uint nb_blank_cases = total_number_of_blank_cases(copy_g);
 	uint alreadyDone[nb_blank_cases * 2];
 	// else try brutforce with deepness going from 1 to the total number of blank cases on the game
-	for (uint deep = 1; deep < nb_blank_cases; deep++) {
+	for (uint deep = min(game_nb_rows(copy_g), game_nb_cols(copy_g)); deep < nb_blank_cases; deep++) {
 		aux_game_solve(copy_g, deep, &move_played, alreadyDone, 0, nb_blank_cases * 2, true, &nb_solutions, &t_games, &size);
 	}
 	for (uint i = 0; i < nb_solutions; i++) {