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How to solve Videos Forum Timed Rankings PDF Print → Subscribe   Solution 13 Jan 2022
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 294 times
abcdefgh
1 
1 mod

2 mod

32×

42×

2 
5 mod
7+

48×

0 mod

2
3 

7
5
24×

12+

3 mod
4 
5+
0 mod

3 mod


12+

5 

336×
1-

2-


3-
6 



4-

13+


7 

8
14+

5


2-
8 
4


5 mod



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.


total
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