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How to solve Videos Forum Timed Rankings Books  PDF Print 18 Jun 2018
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 223 times
abcdefg
1 
14+

11+

1 :

2 mod
2 

78125^
2

6+


3 
729^


40×

84×

4 


1-



10+
5 
15+
2

60×
1-


6 





4-

7 
81^

5-

7

5

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.

Note: this puzzle also uses the exponentiation operator ^
Example: 2^3 = 2 x 2 x 2 = 8
Or, with three digits: 2^4^2 = 2^(4^2) = 2^16 = 65536
Note: evaluation is right to left

total
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