to go ( y; P4 p8 f7 v2 |. H. j# Mask turtles [if any? patches with [pcolor = red and not any? turltes-here] 4 h* N* y& y3 o# j; @* g G0 n0 n3 |& r5 v V2 s) U6 Y
[move-to one-of patches with [pcolor = red and not any? turtles-here]]9 w/ p: b+ X, J. L$ }5 E6 k- e
[move-to one-of patches with [pcolor = blue and not any? turtles-here]]2 d9 b( b$ b& L( C I: P1 l: k0 h/ d
end