Killer Sudoku, Difficulty 10

Puzzle 542 Jun 27 June 2009
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Difficulty 10/10 Average solving time 45 min
Puzzle 545 Jun 28 June 2009
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Difficulty 10/10 Average solving time 45 min
Puzzle 548 Jun 29 June 2009
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Difficulty 10/10 Average solving time 44 min
Puzzle 551 Jun 30 June 2009
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Difficulty 10/10 Average solving time 43 min
Puzzle 554 Jul 1 July 2009
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Difficulty 10/10 Average solving time 37 min
Puzzle 557 Jul 2 July 2009
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Difficulty 10/10 Average solving time 40 min
Puzzle 560 Jul 3 July 2009
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Difficulty 10/10 Average solving time 47 min
Puzzle 562 Jul 4 July 2009
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Difficulty 10/10 Average solving time 35 min
Puzzle 563 Jul 4 July 2009
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Difficulty 10/10 Average solving time 41 min
Puzzle 566 Jul 5 July 2009
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Difficulty 10/10 Average solving time 34 min
Daily Killer Sudoku