Killer Sudoku, Difficulty 10

Puzzle 1178 Jan 25 January 2010
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Difficulty 10/10 Average solving time 42 min
Puzzle 1181 Jan 26 January 2010
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Difficulty 10/10 Average solving time 48 min
Puzzle 1208 Feb 4 February 2010
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Difficulty 10/10 Average solving time 49 min
Puzzle 1211 Feb 5 February 2010
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Difficulty 10/10 Average solving time 31 min
Puzzle 1226 Feb 10 February 2010
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Difficulty 10/10 Average solving time 33 min
Puzzle 1243 Feb 16 February 2010
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Difficulty 10/10 Average solving time 31 min
Puzzle 1246 Feb 17 February 2010
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Difficulty 10/10 Average solving time 36 min
Puzzle 1265 Feb 23 February 2010
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Difficulty 10/10 Average solving time 44 min
Puzzle 1271 Feb 25 February 2010
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Difficulty 10/10 Average solving time 48 min
Puzzle 1280 Feb 28 February 2010
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Difficulty 10/10 Average solving time 37 min
Daily Killer Sudoku