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Windoku Solver Please report any bugs. Tested in IE, Firefox, Safari and Chrome.
Feedback: Form and User Comments/Questions Here
Candidates can be Edited or Highlighted / Shown
Enter clues or solutions
1 2 3 4 5 6 7 8 9
Check for solved cells   
Show Possibles  
1: Singles  
2: Pairs  
3: Triples 
4: Quads 
5: Pointing Pairs  
6: Box/Line Reduction  
Tough Strategies
7: X-Wing  
8: Simple Colouring  
9: Y-Wing  
10: Swordfish  
11: XYZ Wing  
Diabolical Strategies
12: X-Cycles  
13: XY-Chain  
14: 3D Medusa  
15: Jellyfish  
16: WXYZ Wing  
Extreme Strategies
17: Grouped X-Cycles  
18: Finned X-Wing  
19: Finned Swordfish  
20: Altern. Inference Chains 
21: Sue-de-Coq  
22: Digit Forcing Chains  
23: Nishio Forcing Chains 
24: Cell Forcing Chains  
25: Unit Forcing Chains  
26: Almost Locked Sets  
27: Death Blossom  
28: Pattern Overlay Method  
29: Quad Forcing Chains  
"Trial and Error"
30: Bowman's Bingo 

Key
Show bi-value cells
Show Strong (bi-location) links in
Boxes Rows Columns
1 2 3 4 5 6 7 8 9

Please report any bugs - Thanks.

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Clues+Solved: 0/81
Pick an example here


Quick help: Using this Solver

Use the "Import a Windoku" button or type in a Sudoku puzzle in the small board. You can also 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 now use the << button to step back one go. Toggling between Take Step and << helps you see the changes.

Pressing "Enter" on the keyboard after clicking on Take Step is a quick way to activate "Take Step". Details of any solutions will be written out in the text box below the big board. Strategies are ordered by complexity. Any strategy that is successful returns the step-through to the start.

Click on the board to highlight sets of numbers. You can edit the sudoku at any time - entering solutions in the small board or editing candidates. (Toggle between highlighting and editing using the radio buttons at the top).

A
B
C
D
E
F
G
H
J
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
Version 2.06
See Strategy Overview documentation

Coordinate system: Letter/Number rYcX


 

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Free Sudoku and Str8ts for Print

Welcome to my Windoku page

A brand new solver for the Windoku Sudoku variant.

Quite a few people have asked me to add this so I'm very pleased to get this finished at last. May be knock on bugs with the other solvers, do let me know.



Version 2.05 (March 26th 2016)
Expanded Windoku to take advantage of all nine 'windows'
See Windoku Strategy documentation

Version 2.03 (November 11th 2015)
Added Windoku Full version history here

Window numbers refered to in strategy results are:

9 5 5 5 9 6 6 6 9
7 1 1 1 7 2 2 2 7
7 1 1 1 7 2 2 2 7
7 1 1 1 7 2 2 2 7
9 5 5 5 9 6 6 6 9
8 3 3 3 8 4 4 4 8
8 3 3 3 8 4 4 4 8
8 3 3 3 8 4 4 4 8
9 5 5 5 9 6 6 6 9
Solver created on 11-Nov-2015.
This page was last modified on 26-Mar-2016.
All code and design is copyright and for personal use only and may not be reproduced elsewhere.
Copyright Andrew Stuart @ Syndicated Puzzles Inc, 2005-2016