Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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