EEnter puzzle size: 15

A D C B E F N M L K H I J G O
Enter move (0 to quit): d b

A B C D E F N M L K H I J G O
Enter move (0 to quit): h j

A B C D E F N M L K J I H G O
Enter move (0 to quit): n g

A B C D E F G H I J K L M N O

GAME OVER. CONGRATULATIONS!

Game history:
A D C B E F N M L K H I J G O
A B C D E F N M L K H I J G O
A B C D E F N M L K J I H G O
A B C D E F G H I J K L M N O