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Calcudoku:4×45×56×68×812×127×7Killer SudokuSudoku
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12 Jul 2012   Show solution   Rating: 0 () Points: 1 (solved 181 time(s) so far)
abcd
1 
7+

2
1
2 
5+
1
7+

3 

6+
5+
5+
4 
1




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