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MathNet 2019-part-07 — 184 problems (EN–VI) Question 126

Math Olympiad Vault · MathNet 2019-part-07 — 184 problems (EN–VI)

Question 126

Determine if there exists a connected figure $F$ that consists of $1\times 1$ squares and satisfies the following conditions:
* it consists of $s$ $1\times 1$ squares and is not a rectangle;
* any $k\times s$ rectangle, where $k \ge s$, can be split into figures that coincide with $F$.

A figure that consists of $1\times 1$ squares is called *connected* if one can get from any cell to any cell by moving to adjacent cells.

Question illustration

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**Fig. 17**