Solving sudokus - Contents (original) (raw)
Elementary
- Intro
- The easiest methods
- Baby steps
- Forced digits
- Forced cells
- Forced pairs
- Two pairs
- Double pairs
- An easy example
- ... continued
Intermediate
- Matching
- A more difficult example
- Subsets
- Conjugate pairs and Empty rectangles
- Alternating digits
- Forcing chains
- Alternating pairs
- Colouring
- Uniqueness
- Backtrack