22 Apr 2019
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 125 times
abcdefg
1
15+

168×

1^
0-

2

2 :

3
1 mod
10×

1-
42×

4 mod
4

2-

11+

5
24×

7+

70×
6

120×

64^

2-

7
13+

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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