Calcudoku logo

How to solve Video      Forum Timed Rankings Books Specials Print
Calcudoku:4×46×68×89×97×7Killer SudokuSudoku
Select level:EasyMediumDifficultEasyMediumDifficultMediumDifficultDifficultExtraDifficultEasyMedium

Killer Sudoku

Difficult        

25 Oct 2014 (solution tomorrow)   Rating:
Points: 9 (solved 97 time(s) so far)
abcdefghi
1 
16
18

15
12

11

21
2 


4






3 

14

16

20

15

4 
28

16

11
12



5 







15

6 



25
17

15


7 

17



23

20
14
8 
7



13




9 

10







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.

Do you enjoy this site? Support it by becoming a subscriber! (no ads, more puzzles, free books)

The last 20 solved puzzles (       = by subscriber):total
Cell size for 9×9:  small medium large
   
All puzzles published on this site are © Patrick Min. Send your ideas and suggestions to



Server time: Saturday 25 October 2014, 18:00:16 Central European Time. Page processing time: 0.047 sec. Page load time sec.