User blog comment:Wythagoras/Hydra machines/@comment-1605058-20140824170254/@comment-10429372-20140824181743

In the 5 color machine that would work, but when I built 6 color machine, I wouldn't be able to see the difference between move states with x, and without them, and therefore there would be a large chance of missing states in state reduction, and thus getting weaker result.

Next weekend I'll make 7 color, 10 color, 11 color and probably some more color variant.