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Book One

Classic Sudoku

32 puzzles

IBeginner0/4
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Your First Sudoku

Normal sudoku rules apply: fill every row, column, and 3×3 box with 1–9.

+350 XP · +10 coins · par 4:00

Play
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2Wide Margins
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3Forty Clues
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4Scanning
IIEasy0/6
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5Cross-Hatching
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6Fewer Clues
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7Plain Sight
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8Second Glance
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9Still Water
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10Open Country
IIIMedium0/10
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11A Longer Walk
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12Fair Weather
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13Morning Light
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14Shorthand
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15The Quiet Hour
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16Room to Think
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17Steady Ascent
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18Second Reading
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19Slow Going
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20The Narrow Path
IVHard0/6
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21Scree
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22False Summit
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23Against the Grain
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24The Long Ridge
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25Uphill
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26Switchback
VChampion0/6
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27Last Light
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28Nightfall
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29Small Hours
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30Midnight Oil
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31Before Dawn
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32Cold Comfort