Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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