in reply to Challenge: Ricochet Robots

I don't have the moves yet, but I found a solution in 16 moves (almost 5 minutes on my machine). The final position of the robots was 
G: C8
B: M10
R: B8
Y: C9

[download]
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In Section Meditations