Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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