I like this closely related and slightly more subtle problem: Which unique squar... | Hacker News

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		tromp 12 hours ago \| parent \| context \| favorite \| on: My Favorite Math Problem I like this closely related and slightly more subtle problem: Which unique square (up to symmetry) must be left if you cover the 64 squares of a chess board with 21 3x1 trominoes?

CrazyStat 12 hours ago [–]

Knowing that the solution is unique makes this trivial to solve in a couple minutes just by scribbling on a piece of paper (I just did). It does not seem more subtle than the original.

Proving that the solution is unique may be more subtle.

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