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