Killer Sudoku, Difficulty 10

Puzzle 7520 Jul 18 July 2013
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Difficulty 10/10 Average solving time 28 min
Puzzle 7530 Jul 20 July 2013
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Difficulty 10/10 Average solving time 23 min
Puzzle 7535 Jul 21 July 2013
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Difficulty 10/10 Average solving time 23 min
Puzzle 7540 Jul 22 July 2013
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Difficulty 10/10 Average solving time 37 min
Puzzle 7545 Jul 23 July 2013
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Difficulty 10/10 Average solving time 43 min
Puzzle 7550 Jul 24 July 2013
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Difficulty 10/10 Average solving time 25 min
Puzzle 7555 Jul 25 July 2013
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Difficulty 10/10 Average solving time 30 min
Puzzle 7560 Jul 26 July 2013
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Difficulty 10/10 Average solving time 33 min
Puzzle 7570 Jul 28 July 2013
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Difficulty 10/10 Average solving time 47 min
Puzzle 7580 Jul 30 July 2013
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Difficulty 10/10 Average solving time 32 min
Daily Killer Sudoku