Sudoku Solving Techniques

Every Sudoku is solved with logic, and the logic comes in layers. This collection walks the full ladder of Sudoku solving techniques, from the singles a beginner spots in seconds to the fish, wings, colouring and forcing chains that crack the hardest grids. Each guide explains not just what a pattern looks like but how to recognise it on a real board and why the elimination it produces is always safe.

If you are just starting out, begin with naked and hidden singles, pairs and pointing pairs, then work outward to X-Wings and beyond. Every technique here works exactly the same whether the grid holds numbers or the nine glowing shapes of Shapedoku, so you can practise each one, then try it on Hard or Extreme.