How does removing a single square from a 5 × 3 grid affect its tileability?

Question

Edzy · Accepted Answer

Removing a single square from a 5 × 3 grid leaves 14 squares, which is even, but since there are originally 15 squares (odd), having one removed can prevent proper pairing when using 2 × 1 tiles, leading to a non-tileable configuration.

How does removing a single square from a 5 × 3 grid affect its tileability?

How does removing a single square from a 5 × 3 grid affect its tileability?

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