Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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