The touch here was very hard for me to see. Optimization is not easy, either. I'm currently stuck at 274.
This is an amazing structure!
EDIT (a day later): I would now be 2 off (from Jett's 254), if it wasn't for Flash. :))
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It's hard to see the shortest way, for me, here. I was stuck at 121, for a short while. Now I found 119(s) and stuck again. Will keep searching! The 2 cut is well hidden, imo.
EDIT: It took me ***************************************************************************************************************************************************************************************
This Abakus is not a simple device, at all. :)) I'm currently at 121. It took me nearly 20 minutes to see how to even touch. O :)
A great one!
EDIT: I guess I got a bit lucky (to find the 2 cut in a minute or two).