Killer Sudoku, Difficulty 10

Puzzle 4502 Nov 23 November 2011
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Difficulty 10/10 Average solving time 23 min
Puzzle 4512 Nov 25 November 2011
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Difficulty 10/10 Average solving time 25 min
Puzzle 4517 Nov 26 November 2011
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Difficulty 10/10 Average solving time 45 min
Puzzle 4522 Nov 27 November 2011
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Difficulty 10/10 Average solving time 43 min
Puzzle 4532 Nov 29 November 2011
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Difficulty 10/10 Average solving time 37 min
Puzzle 4541 Dec 1 December 2011
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Difficulty 10/10 Average solving time 47 min
Puzzle 4551 Dec 3 December 2011
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Difficulty 10/10 Average solving time 31 min
Puzzle 4561 Dec 5 December 2011
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Difficulty 10/10 Average solving time 34 min
Puzzle 4571 Dec 7 December 2011
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Difficulty 10/10 Average solving time 31 min
Puzzle 4581 Dec 9 December 2011
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Difficulty 10/10 Average solving time 30 min
Daily Killer Sudoku