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How to play Sudoku

All the Sudoku's on our website can be solved with logic using these methods.

 
Introduction

 
 Sudoku Rules and Terminology

Basic Solving Techniques

 
 Last Digit / Full House
 
 Hidden Singles
 
 Naked Singles

Solving Aids

 
 Using Pencil Marks
 
 Using Highlights

Intermediate Solving Techniques

 
 Locked Candidates Type 1
 
 Locked Candidates Type 2 (Claiming)
 
 Naked Pairs/ Twins
 
 Naked Triples
 
 Hidden Pairs

Advanced Solving Techniques

 
 X Wing
 
 Swordfish
 
 XY Wing (aka Y Wing)

>> use checkboxes to track your progress.
 

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