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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 162 time(s) so far)
abcdefghi
1 
15
3
15
1

5
18
7

8
18
4

9
15
2

6
2 

4

9
13
6

3
11
2

5
16
8

7
5
1
3 

8
14
2

7
15
1

9
9
6

3

5

4
4 

7

5
19
1

8

6

2
14
4

3
16
9
5 
19
9

4

8

5
7
3

1

7
14
6

2
6 

6

3

2
15
9

4
11
7
19
1

8

5
7 
39
5

8

9

6

1

3

2

4

7
8 
3
1

6

4
33
2

7

8

5
20
9

3
9 

2

7
12
3

4

5

9

6

1

8

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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