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How to solve Videos Forum Timed Rankings PDF Print   Solution 14 Mar 2019
Easy:
4×4
5×5
Sudoku
Medium:
4×4
5×5
6×6
8×8
Killer
Sudoku
Difficult:
4×4
5×5
6×6
8×8
12×12
Extra
Difficult 8 × 8, Rating: ★★★★★      Solved 146 times
abcdefgh
1 
7
1 mod

0 mod
19+

48×

2 
2 mod
1-




1 mod
3 

5
30×
1-

7+


4 
1 mod
8


2 mod

0 mod
8 :
5 

2 mod
13+


1-


6 
2 :


0-


5
2-
7 


6-


6
2 mod

8 
5 mod


2 mod

1

4

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 some more explanations.


total
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