Jack Lance on Twitter: "Can you 3-color a 1-ε by 1-ε square so points 1 away aren't same color? I always get some left but I can't prove it. https://t.co/JKvrcragWo" / Twitter

Can you 3-color a 1-ε by 1-ε square so points 1 away aren't same color? I always get some left but I can't prove it. i.gyazo.com/827e63869c8a8e