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ah yes, the touch controls. i did not take that into consideration. that is the theme of the contest.
well then, if you space the pieces out enough, you can have a matrix of the controls appear around the piece that you touch/select, instead of having them off to the side. that way, no matter which piece you select, the controls are right there, intuitively surrounding the selected piece only.
and unused blocks is cruel and unusual punishment...lol.