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Calcudoku:4×46×68×89×915×15Killer SudokuSudoku
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Killer Sudoku

Difficult    

18 Aug 2012   Hide solution   Rating:
Points: 9 (solved 91 time(s) so far)
abcdefghi
1 
18
4

9
8
1

5
17
3

6
13
7

2
21
8
2 

5
16
6

7

2

8
5
1

4

3

9
3 
5
2

3
21
8

9
8
7

4
20
5

6

1
4 

3
3
2

4
13
6

1
8
5

9
30
8

7
5 
17
8

1
15
6

7
25
9

3
5
2

5

4
6 

9
22
7

5

4

2
17
8

3
10
1

6
7 

1

4

2

3

6

7
14
8

9
8
5
8 
18
7

8
13
9

1

5

2

6
14
4

3
9 

6

5

3
21
8

4

9

1

7

2

You can solve the puzzle using the number + arrow keys, or the mouse. Use shift + number to toggle guesses, the space bar to clear a cell, and 'backspace' for undo. Press '=' to highlight the number in a cell.

A Killer Sudoku is the same as a Calcudoku puzzle, except:

  • the operator is always + (and not shown)
  • every 3×3 box has the numbers 1..9 exactly once
  • a cage also can not have duplicate numbers (!)

You can also solve the puzzles on the iPhone/iPod Touch/iPad and the Kindle 3.

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The last 20 solved puzzles (       = by subscriber):total
Cell size for 9×9:  small medium large
   
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