spoiler for how to prove it: think of colors of chessboard (black/white alternat... | Hacker News

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		blueplanet200 on July 19, 2021 \| parent \| context \| favorite \| on: Math Problems for children from 5 to 15 (2004) [pd... spoiler for how to prove it: think of colors of chessboard (black/white alternating) and what colors a domino piece will always cover.

SamBam on July 19, 2021 [–]

Nice.

I was confused by the L-shaped shading in the top-right corner of the diagram, though.

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