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4 – THE COMBIS

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4 – THE COMBIS

Once upon a time, in Poitiers, France, a teacher who was a member of the APMEP (Association of the mathematics teachers teaching in the French state education system) wanted to tile his bathroom.

He had his bathroom filled with a strange tiling whose pattern allowed to cover a square with seven unit long sides.

In order to have it look nice, he chose to observe the following rules:

Cover the square of the board respecting the four conditions indicated above.

NO

1 - Two big squares can't be in the same row, neither horizontally nor vertically.

2 - Two rectangles can't be adjacent on the whole length of two same sides.

3 – Two small squares can't be adjacent.

4 – All the pieces have to be put.

NO YES

YES

NO YES

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