Sudoku

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🔢

Sudoku

dailyaction

Sudoku where every puzzle is verified to have exactly one solution reachable by pure logic. Four levels plus a daily.

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📖 How to Play
たて9・よこ9・太い線でかこまれた3×3のブロックのどれにも<b>1〜9が1つずつ</b>入るように埋める。マスをタップ→下の数字をタップ。「✏メモ」で小さい候補を書ける(同じ数字をもう一度押せば消える)。数字を入れると、同じ行・列・ブロックのメモは自動で消える。「💡ヒント」は1問3回までで、使うとタイムに+30秒。むずかしさは4段階で、<b>それぞれ「その段の手筋だけで解ける」ことを出題前に確かめている</b>(やさしい=確定マスだけ/ふつう=唯一の置き場まで/むずかしい・鬼=候補の絞りこみまで)。当てずっぽうが必要な問題は出ない。「📅きょうの一問」は全員おなじ問題で、解けたタイムが全国ランキングにのる。
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