Question

Prove that the given shape cannot be cut into dominoes:

Difficulty level (1 very easy - 10 very hard): 2

Combinatorics -> Invariants Combinatorics -> Matchings Number Theory -> Division -> Parity (Even/Odd) Proof and Example -> Proof by Contradiction Combinatorics -> Colorings -> Chessboard Coloring Combinatorics -> Combinatorial Geometry -> Cut a Shape / Dissection Problems

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