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low importance~0-1 Q in Tier 11 formulas⚡ 3 shortcuts2 subtopics

Every formula in this topic, grouped by subtopic. Print it and pin it above your desk.

Movement and rotation

Position after k steps
p_{k} = (p_{0} + k\,s) \bmod 8

s = step (positive = clockwise) on the 8 border places.