The goal is to fill in the grid with digits "0" and "1" according to the following rules:There are as many digits "1" as digits "0" in every row and every column (or one more for odd sized grids).No more than two cells in a row can contain the same number.Each row is unique, and each column is unique.

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Conditions g�n�rales de vente

Please order through the Abebooks checkout. We only take orders through Abebooks - We don't take direct orders by email or phone.

Refunds or Returns: A full refund of the purchase price will be given if returned within 30 days in undamaged condition.

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Conditions d'exp�dition

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Frais d?exp�dition de Royaume-Uni�vers�Etats-Unis

Frais d?exp�dition de Royaume-Uni�vers�Etats-Unis
Quantit� command�e	7 � 28 jours ouvr�s	7 � 28 jours ouvr�s
Premier article	EUR 14.54	EUR 16.82

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