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How to solve Videos Forum Timed Rankings Books Specials Print 17 Aug 2017
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: ★★★★★  Points: 8     Solved 20 times
abcdefgh
1 
2 mod

2 mod
18+
12+

8+
5-
2 




1 mod


3 
3 mod

35×



12+

4 
8
8+
1
2
1 mod

3 mod

5 
8+

16+

72×

8
16+
6 

2 mod
8





7 
5

13+

10+
0 mod

7+
8 
2 :


6


7

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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