board 16 16
B N N N N N B N N N N N N B N N
W C C C C C C C C C C C C C C C
W C C B C C C C C C C C W C C C
W C C C C W C C C C C B C C C C
B C N W C N C C C C C C C C C C
W C C C C W C C C N W C C C C N
W C C C N C C C C C C C C W C C
W C C C C C C B B W C C C N C C
W C C C C C C B B W C C C C C C
W C W C C C C N N C C C N W C C
W C N C C C C N W W C C C C C N
B C C C C C C C C N C C C C C C
W C C C W C C C C C C C C C C C
W C C B C C C C C C C C C C C W
W C C C C N W C C B C C C C N C
W C C C C C C W C C C W C C C C
mirrors 4
4 14 / 4
12 6 / 3
6 12 / 2
1 13 / 1
robots 5
15 7
5 14
3 12
13 0
3 15
target 0 9 14 3
solution 9
move 0 15 5
move 0 10 5
move 0 10 15
move 3 13 6
move 3 15 6
move 3 15 5
move 3 10 5
move 3 10 14
move 3 9 14