Killer Sudoku, Difficulty 10

Puzzle 4063 Aug 27 August 2011
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Difficulty 10/10 Average solving time 29 min
Puzzle 4072 Aug 29 August 2011
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Difficulty 10/10 Average solving time 39 min
Puzzle 4077 Aug 30 August 2011
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Difficulty 10/10 Average solving time 38 min
Puzzle 4082 Aug 31 August 2011
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Difficulty 10/10 Average solving time 33 min
Puzzle 4087 Sep 1 September 2011
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Difficulty 10/10 Average solving time 30 min
Puzzle 4097 Sep 3 September 2011
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Difficulty 10/10 Average solving time 27 min
Puzzle 4107 Sep 5 September 2011
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Difficulty 10/10 Average solving time 40 min
Puzzle 4117 Sep 7 September 2011
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Difficulty 10/10 Average solving time 49 min
Puzzle 4127 Sep 9 September 2011
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Difficulty 10/10 Average solving time 33 min
Puzzle 4137 Sep 11 September 2011
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Difficulty 10/10 Average solving time 23 min
Daily Killer Sudoku