Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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