Variant Solving Techniques

This page contains techniques and tricks commonly used in specific Sudoku variants. Classic Sudoku techniques still apply and can be found in Solving Techniques.

Sudoku Variant Techniques

Anti-Knight

• Pointing Quintuples
• PotatoHead's Theorem
• Anti-Knight Cross

Arrow

Sum Shifting Rule of 45 123 Trick (for 3 Cell Arrows) Unique Pairs

Killer

• Rule of 45
• Unique Pairs
• Same Digit Coloring

Sudoku X

• Dyer's Theorem

Thermo

Low/High Digit Placement Thermo Cell Placement

Windoku

Hidden Sets of 1 to 9