Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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