Killer Sudoku, Difficulty 10

Puzzle 138 Feb 13 February 2009
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Difficulty 10/10 Average solving time 40 min
Puzzle 141 Feb 14 February 2009
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Difficulty 10/10 Average solving time 42 min
Puzzle 144 Feb 15 February 2009
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Difficulty 10/10 Average solving time 37 min
Puzzle 150 Feb 17 February 2009
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Difficulty 10/10 Average solving time 32 min
Puzzle 152 Feb 18 February 2009
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Difficulty 10/10 Average solving time 40 min
Puzzle 153 Feb 18 February 2009
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Difficulty 10/10 Average solving time 36 min
Puzzle 156 Feb 19 February 2009
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Difficulty 10/10 Average solving time 52 min
Puzzle 159 Feb 20 February 2009
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Difficulty 10/10 Average solving time 44 min
Puzzle 162 Feb 21 February 2009
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Difficulty 10/10 Average solving time 53 min
Puzzle 164 Feb 22 February 2009
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Difficulty 10/10 Average solving time 36 min
Daily Killer Sudoku