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Calcudoku:4×46×68×89×98×8Killer SudokuSudoku
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Killer Sudoku

Difficult    

18 Aug 2012   Hide solution   Rating:
Points: 9 (solved 28 time(s) so far)
abcdefghi
1 
13
2
16
6

9
19
7

8
8
1

5
13
3

4
2 

3

8

1

4
17
5

2
19
9

6
24
7
3 
15
7
9
4

5
11
6

9

3

2

1

8
4 

8
3
2

4

1
26
6
14
5

3
14
7

9
5 
14
5

1
32
7

8

3

9

4

2
25
6
6 

9
9
3

6

2

7
19
4

8

5

1
7 

1

5

2

9
12
4

6

7

8

3
8 
19
6

9

8
8
3

2
22
7
14
1

4

5
9 

4
10
7

3

5

1

8

6

9

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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