## Sudoku Help - Guide ChoiceHere's a page from the extensive help system for Sudoku Dragon. It is available as a help screen when running the program. To get the full picture Download our Sudoku Dragon and see the screen in its proper context. If you would like help in learning the basics of Sudoku or using the Sudoku Dragon puzzle solver we have created a number of step by step guides. The list gives a brief description of all the available guides, simply select the tutorial from the list and press Topics include : - How to solve a puzzle with Sudoku Dragon.
- Using the alternate pair allocation rule.
- Marking possibilities with Sudoku Dragon.
- Using the only square allocation rule.
- Using the only choice allocation rule.
- Using the naked twin exclusion rule.
- Using the excluded sub-group rule.
- Using the hidden twin exclusion rule.
- Using the hook rule.
- Using the naked chain rule.
- Using the naked triplet exclusion rule.
- Using the X-Wing exclusion rule.
- Solving a gentle 4x4 puzzle step by step.
- Solving a gentle 9x9 puzzle step by step.
- Solving a moderate 9x9 puzzle step by step.
- Solving a complete moderate 9x9 puzzle step by step using the 2 out of 3 strategy.
- Index of available guides
- Running a Tutorial
**Choosing a Tutorial**- 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
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