Fifteen

Developed by Pedro Izecksohn.

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

Fifteen

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

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