Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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