Col is PSPACE-complete on Triangular Grids

Kyle Burke; Craig Tennenhouse

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arXiv · 2501.06574

Col is PSPACE-complete on Triangular Grids

Kyle Burke·Craig Tennenhouse

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Abstract

We demonstrate that Col is PSPACE-complete on triangular grid graphs via a reduction from Bounded Two-Player Constraint Logic. This is the most structured graph family that Col is known to be computationally hard for.

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Kyle Burke, Craig Tennenhouse. 2025-01-11. Col is PSPACE-complete on Triangular Grids. https://arxiv.org/abs/2501.06574

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