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How to solve Videos Forum Timed Rankings Books PDF Print Subscribe 6 Dec 2022
Easy:
4×4
5×5
6×6
Killer
Sudoku
Medium:
4×4
6×6
8×8
Killer
Sudoku
Difficult:
4×4
6×6
8×8
9×9
Extra
Difficult 8 × 8, Rating: ★★★★★  Points: 8     Solved 98 times
abcdefgh
1 
7 :
15|
 
12|
 
7|
6|
7+
Clear cell
Bold cell
Toggle pencil mode
Hide buttons
Change buttons position
Undo
2 
 
7+
 
3|
 
 
 
 
3 
7|
 
5|
24×
 
10+
35×
4 :
4 
 
1-
 
 
 
 
 
 
5 
10|
 
7|
8+
 
3|
6|
 
6 
 
7+
 
7|
5|
 
11|
7 
7|
 
5+
 
 
2 :
 
 
8 
 
2
 
1-
 
 
4-
 

Note: this puzzle also uses the bitwise OR operator |
(see for example this page or this forum page for an explanation)


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