Killer Sudoku, Difficulty 10

Puzzle 641 Jul 30 July 2009
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Difficulty 10/10 Average solving time 51 min
Puzzle 644 Jul 31 July 2009
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Difficulty 10/10 Average solving time 34 min
Puzzle 647 Aug 1 August 2009
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Difficulty 10/10 Average solving time 31 min
Puzzle 650 Aug 2 August 2009
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Difficulty 10/10 Average solving time 23 min
Puzzle 653 Aug 3 August 2009
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Difficulty 10/10 Average solving time 42 min
Puzzle 656 Aug 4 August 2009
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Difficulty 10/10 Average solving time 29 min
Puzzle 659 Aug 5 August 2009
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Difficulty 10/10 Average solving time 25 min
Puzzle 713 Aug 23 August 2009
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Difficulty 10/10 Average solving time 32 min
Puzzle 734 Aug 30 August 2009
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Difficulty 10/10 Average solving time 40 min
Puzzle 749 Sep 4 September 2009
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Difficulty 10/10 Average solving time 47 min
Daily Killer Sudoku