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How to solve Videos Forum Timed Rankings Print   Solution 2 Apr 2013
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
5×5
6×6
8×8
Sudoku
Difficult:
4×4
5×5
6×6
12×12
Extra
Easy 4 × 4, Rating: 0      Solved 611 times

The World's Hardest Calcudoku
can you solve it?
abcd
1 
7+
4+

6+
2 

6+
3+

3 
3+


3
4 

7+

1
total
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