to go( X! w& f& S# j; ~, K
ask turtles [if any? patches with [pcolor = red and not any? turltes-here] + k% V. d; O' a$ G7 }4 v9 u% y9 N
[move-to one-of patches with [pcolor = red and not any? turtles-here]]3 s: b7 D3 S- G, R7 T# a
[move-to one-of patches with [pcolor = blue and not any? turtles-here]]3 {9 f2 C, h9 l0 X2 B1 r# Z' V
end