to go! f0 J: i2 O4 @; b) R
ask turtles [if any? patches with [pcolor = red and not any? turltes-here] : q$ B; {9 P- J2 I Q4 e" f( z( ~6 B' m
[move-to one-of patches with [pcolor = red and not any? turtles-here]]; M9 A* H+ {2 a6 m
[move-to one-of patches with [pcolor = blue and not any? turtles-here]] ; l% D' R1 K" ^) H1 fend