@GabrielC.Drummond-Cole Ah, I misunderstood your question. The format you gave is fine, since I too suspect the answer won't be nice.

@GabrielC.Drummond-Cole Similar to an algorithm for evaluating red-blue Hackenbush positions. Though I suppose one doesn't exist yet (and it may be impossible to come up with a nice algorithm in general), according to my research.

Thanks for your replies! Is there a known way to evaluate red-blue-green stalks, like there is for red-blue stalks and green stalks?