Strategies for Number Puzzles of all kinds KenKen
   
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The Logic of Sudoku
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6x6 KenDoku® Solver Feedback: Form and User Comments/Questions Here
By Andrew Stuart, In association with www.KenKen.com
Click to edit candidates or enter a solution:
Pick an example here

1 2 3 4 5 6
A
B
C
D
E
F
     
     
     
     
     
     
     
     
     
     
     
     
1
2
3
4
5
6
Version 2.01
See Strategy Overview documentation
Show Candidates
Check for Solved Squares   
Show Possibles  
1: Singles in Row/Col   
2: Singles in Box  
3: Naked Pairs/Triples  
4: Hidden Pairs/Triples 
5: KenDoku Combinations  
6: Dog Legs  
7: Pointing Pairs  
8: Box/Line Reduction  
Tough Strategies
9: Cage/Unit Overlap  
10: X-Wing  
11: Simple Colouring  
12: Y-Wing  
13: Sword-Fish  
Diabolical Strategies
14: X-Cycles  
15: XY-Chain  
16: 3D Medusa  
Evil Strategies
17: Grouped X-Cycles  
18: Altern. Inference Chains 
19: Digit Forcing Chains  
20: Cell Forcing Chains  
21: Unit Forcing Chains  
22: Almost Locked Sets  
23: Quad Forcing Chains  


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The Rules

All the digits 1 to 6 must appear in every row, column and 3 by 2 box. In each coloured block (or 'cage'), the target number in the small board above is calculated from the digits in all the cells in the block, using the operation indicated.

Coordinate system: Letter/Number rYcX




Welcome to this KenDoku® Solver

This is a demonstration version exclusively for www.KenKen.com feedback.

Quick help: Using this Solver

You can pick examples from the list above. Click on Take Step to step through the solution. Unknown squares are filled with 'candidates' - possible solutions.
Any cells that are reduced to one possible candidate are solved.

You can enter a new KenDoku puzzle using the new 'designer' - click on "Enter new KenDoku". Once you fill in the clues and set up the cages correctly it can be solved.

Unlike the other solvers you can only edit the main board when solving. The small board only displays the clues.




New: Version 2.01 (March 25th 2011)
Updated with all the new Sudoku and Killers (that apply), removed some depeciated ones and one strategy which was not applicable.

New: Version 1.02 (June 28th 2009)
KenDoku Solver released





Solver created on 30-May-2009.