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How to solve Videos Forum Timed Rankings Books PDF Print 4 Mar 2024
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
6×6
7×7
Sudoku
Difficult:
4×4
5×5
6×6
7×7
9×9
Extra
Difficult 7 × 7, Rating: ★★★★★  Points: 9     Solved 293 times
abcdefg
1 
15+
 
2-
15×
 
0-
 
Clear cell
Bold cell
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Undo
2 
 
3 :
 
 
9+
11+
 
3 
2 mod
 
14+
 
 
2 :
4 
 
 
 
 
72×
 
 
5 
1-
4-
 
3-
 
 
10+
6 
 
 
10+
 
17+
 
 
7 
 
 
6
 
2-
 

Note: this puzzle also uses the modulo operator mod
a mod b = r means that when dividing a by b, the remainder is r. For example, 5 mod 2 = 1, and 3 mod 5 = 3.
Look here for a longer explanation.

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