本書に収録されているパズルのルールはとても単純で簡単です。「１つの列に同じ数字を入れてはいけない」。「同じマスの中を２度通らない（同じマスを２度使わない）」。初級〜上級までの３つのレベルに分け、各級の終わりには級位認定証をつけました。これから小学校へ入学するお子さんや、算数に苦手意識を持つお子さん向け。
賢くなるパズル（基礎編）
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