# ‘Two out of Three’ Sudoku puzzle solving guide

## Step

The Two out of Three strategy is a technique for finding squares quickly and easily that can be solved using the Only Choice and Only Square rules.

#### Other guides

- Index of available guides
- Only Choice rule for gentle puzzles
- Only Square rule for gentle puzzles
- Single Possibility rule for gentle puzzles
**Two out of Three strategy for gentle puzzles**- Shared Subgroup rule for gentle and moderate puzzles
- Naked Twin rule for moderate puzzles
- Hidden Twin rule for tough puzzles
- X Wing rule for tough puzzles
- Swordfish rule for tough puzzles
- Alternate Pair rule for very tough puzzles
- Hook rule for very tough puzzles
- Trial and error rule for any puzzle
- Solving a gentle puzzle step by step
- Gentle puzzle solved using Only Choice and Only Square
- Moderate puzzle solved using some Twin and Sub-group logic
- Challenging puzzle solved using Hook and Sub-group logic
- Running a Dragon Tutorial
- Choosing a Dragon Tutorial

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