Sudoku Solver
by Andrew Stuart
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Version 2.70.1

Automatically clear off candidates as numbers are entered.
Overwrites manual editing.Auto Clear		 Clues+Solved: 0/81
All Solutions to a Sudoku
Min-lex version:    (docs)
By Andrew Stuart, Rui Gonçalves and Jim White (min-lex)
Attempting to minimise the number of clues...
Warning: This may run for a long time depending on the puzzle and appear to hang.
Cancel if excessive.
Removed: Recursed Still Going! Finished!

Email this puzzle
Copy and paste the contents of the green box into your email program and send it off.
The links contain the puzzle which will load when your friend visits the Sudoku Solver.

Import a Sudoku puzzle
Paste in 81 numbers. Zeroes can be dots or other punctuation.
This importer can handle noisy formats like grids with lines and dots.
As long as there are 81 separated numbers.
Any number greater than 9 will be treated as a set of candidates.

Filter Strategies
Clear eliminated  
Check for solved cells  
 1: Singles  
 2: Pairs Naked+Hidden  
 3: Pointing Pairs  
 4: Box/Line Reduction  
 5: Triples Naked+Hidden 
Tough Strategies
*: Gurth's Theorem  
  6: BUG+1  
  7: X-Wing  
  8: Unique Rectangles 1  
  9: Chute Remote Pairs  
10: Y-Wing  
11: W-Wing  
12: Rectangle Elimination  
13: Simple Colouring  
14: Quads Naked+Hidden  
15: Swordfish  
16: XYZ Wing  
Diabolical Strategies
17: X-Cycles  
18: XY-Chain  
19: 3D Medusa  
20: Jellyfish  
21: Unique Rectangles 2+  
22: Various static patterns  
23: Extended Unique Rect's  
24: Hidden Unique Rect's  
25: WXYZ Wing  
26: Aligned Pair Exclusion  
Extreme Strategies
27: Grouped X-Cycles  
28: Forcing Nets  
29: Exocet  
30: Finned X-Wing  
31: Finned Swordfish  
32: Altern. Inference Chains 
33: Almost Locked Sets  
34: Death Blossom  
35: Sue-de-Coq  
36: Digit Forcing Chains  
37: Nishio Forcing Chains 
38: Cell Forcing Chains  
39: Unit Forcing Chains  
40: Pattern Overlay Method  
41: Quad Forcing Chains  
"Last Resort"
42: Bowman's Bingo 
URs in Chain Links
See the Strategy Home Page for strategy guides
Filter Strategies
Puzzle links
Import a Sudoku
Send to Player
Printable Version
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Rotate
Coordinate system: Letter/Number rYcX
Clear the board to begin a new puzzle.

Tap on cells and select a number

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