Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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