Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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