Strategies for Number Puzzles of all kinds KenKen
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6x6 KenKen® Solver Feedback: Form and User Comments/Questions Here
By Andrew Stuart, In association with
Click to edit candidates or enter a solution:
Pick a puzzle from

1 2 3 4 5 6
Version 2.09
See Strategy Overview documentation
Show Candidates
Check for Solved Squares   
Show Possibles  
1: Singles in Row  
2: Singles in Column  
3: Naked Pairs/Triples  
4: Hidden Pairs/Triples 
5: Trivial Dog Legs  
6: KenKen Combos  
7: Dog Legs  
8: Innies and Outies (1 cell)  
Tough Strategies
9: Cage/Unit Overlap  
10: Rule of 21  
11: X-Wing  
12: Simple Colouring  
13: Innies/Outies (2+ cells)  
14: Sword-Fish  
Diabolical Strategies
15: X-Cycles  
16: XY-Chain  
17: 3D Medusa  
Exotic Strategies
18: Grouped X-Cycles  
19: Altern. Inference Chains 
20: Digit Forcing Chains  
21: Cell Forcing Chains  
22: Unit Forcing Chains  
23: Almost Locked Sets  
24: Quad Forcing Chains  

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Solve Order (from Grader)

Coordinate system: Letter/Number rYcX

The Rules

All the digits 1 to 6 must appear in every row and column. 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.

Welcome to this KenKen® Solver

This is a Beta demonstration version exclusively for 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 KenKen puzzle using the new 'designer' - click on "Enter new KenKen". 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 2.09 (Nov 28th 2015)
Upgrade to the Core Engine and all most improvements since 2013.

New: Version 2.07 (Jul 28th 2013)
Upgrade to the Core Engine to include recent improvements.

New: Version 2.06 (Nov 23th 2011)
Added a check for trivial dog legs, for example the 3-cage 96x: Click here.

New: Version 2.05 (Oct 13th 2011)
Partial implementation of a new cage vs cage strategy.

New: Version 2.02 (May 26th 2011)
Added the 'Solve Order' grid. This is experimental.
It is generated from the Grader button

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 1.03 (October 23rd 2009)
The examples in the selection list now come from the 6x6 player at They will be the most recent 20 up to yesterday.

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

Solver created on 30-May-2009.

This page was last modified on 28-Nov-2015.
All code and design is copyright and for personal use only and may not be reproduced elsewhere.
Copyright Andrew Stuart @ Syndicated Puzzles Inc, 2005-2015
KenKen® is a registered trademark of Nextoy, LLC. Puzzle content ©2009 KenKen Puzzle LLC. All rights reserved