Yes, the red joker leads the first move, and here the player can determine how many steps to use (1, 2, 3, 4), but then they must use as many steps as the value of the card they are standing on. That should correspond to your rules. But solo mode is something else. I originally played solo with a 4x4 board. After about 5 games, I managed to fold the board down to the black joker. But then I didn't manage it for a long time, and then I managed it again. But in my opinion, it was probably just a coincidence. So I modified the program to 3x3, and it's better here, but even so, there are combinations of 3x3 card layouts where the board is unplayable. That's why my son gave me the idea to generate game boards recursively. This means that the generation starts by placing the black joker, and then a card of any value is added to it, provided that it must be adjacent to it directly or via wrap-around. The next cards are added to the last card placed according to the same principle (they must be adjacent) and with a value that complies with the rules of the number of steps, wrap-around, and other rules. Finally, a red joker is placed on the last empty space on the game board, and the game board is recursively composed and, most importantly, always has a solution.