Fifteen

Developed by Pedro Izecksohn.

1 2 4 7
5 6 3 8
D 9 A F
E _ C B

Fifteen

1 2 4 7 5 6 3 8 D 9 A F E _ C B

1 2 4 7
5 6 3 8
D 9 A F
E _ C B