Killer Sudoku, Difficulty 10

Puzzle 2504 Aug 30 August 2010
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Difficulty 10/10 Average solving time 35 min
Puzzle 2519 Sep 2 September 2010
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Difficulty 10/10 Average solving time 37 min
Puzzle 2543 Nov 26 November 2010
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Difficulty 10/10 Average solving time 32 min
Puzzle 2553 Nov 28 November 2010
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Difficulty 10/10 Average solving time 40 min
Puzzle 2563 Nov 30 November 2010
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Difficulty 10/10 Average solving time 45 min
Puzzle 2608 Dec 9 December 2010
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Difficulty 10/10 Average solving time 28 min
Puzzle 2617 Dec 11 December 2010
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Difficulty 10/10 Average solving time 40 min
Puzzle 2621 Oct 22 October 2010
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Difficulty 10/10 Average solving time 24 min
Puzzle 2625 Oct 23 October 2010
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Difficulty 10/10 Average solving time 26 min
Puzzle 2683 Nov 21 November 2010
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Difficulty 10/10 Average solving time 29 min
Daily Killer Sudoku