Paper by Erik D. Demaine

Reference:

Aviv Adler, Erik D. Demaine, Adam Hesterberg, Quanquan Liu, and Mikhail Rudoy, “Clickomania is Hard Even With Two Colors and Columns”, in The Mathematics of Various Entertaining Subjects (MOVES 2015), volume 2, 2017, pages 325–363, Princeton University Press.

Availability:

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