Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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