Killer Sudoku, Difficulty 7

Puzzle 8 Jan 3 January 2009
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Difficulty 7/10 Average solving time 43 min
Puzzle 41 Jan 12 January 2009
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Difficulty 7/10 Average solving time 46 min
Puzzle 47 Jan 14 January 2009
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Difficulty 7/10 Average solving time 37 min
Puzzle 50 Jan 15 January 2009
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Difficulty 7/10 Average solving time 36 min
Puzzle 65 Jan 20 January 2009
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Difficulty 7/10 Average solving time 38 min
Puzzle 74 Jan 23 January 2009
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Difficulty 7/10 Average solving time 42 min
Puzzle 134 Feb 12 February 2009
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Difficulty 7/10 Average solving time 42 min
Puzzle 137 Feb 13 February 2009
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Difficulty 7/10 Average solving time 48 min
Puzzle 149 Feb 17 February 2009
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Difficulty 7/10 Average solving time 44 min
Puzzle 155 Feb 19 February 2009
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Difficulty 7/10 Average solving time 35 min
Daily Killer Sudoku