Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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