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How to solve Videos Forum Timed Rankings Books PDF Print Subscribe 16 Aug 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 161 times
abcdefgh
1 
3|
10+
 
7|
4-
7|
6|
15|
Clear cell
Bold cell
Toggle pencil mode
Hide buttons
Change buttons position
Undo
2 
 
9+
 
 
 
 
 
 
3 
7|
2-
 
1-
 
7|
3-
 
4 
 
 
 
15|
 
 
14|
6|
5 
7|
 
7|
 
4-
4-
 
 
6 
12|
 
 
6|
 
 
3|
 
7 
 
 
 
7|
 
5 :
 
8 
1-
 
12×
 
48×
 
35×
 

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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