We show that for every non-spherical set X in Eᵈ, there exists a natural number m and a red/blue-colouring of Eⁿ for every n such that there is no red copy of X and no blue progression of length m with each consecutive point at distance $1$. This verifies a conjecture of Wu and the first author.
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Conlon et al. (2024) studied this question.
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