Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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