Guides
How to solve each puzzle, written for this site. Each guide follows the techniques our hints use, in the order the difficulty levels introduce them.
Getting started with logic puzzles
New to grid puzzles? Which one to try first, how to read a grid, why you never need to guess, and how to use hints so you learn instead of copying.
Updated 29 September 2026
Sudoku techniques, from singles to XY-wings
Every technique our sudoku hints and difficulty ratings use, level by level: what to look for, why it works and how to spot it quickly.
Updated 29 September 2026
How to solve nonograms: line by line
The three techniques behind every nonogram on Point Paper, from run overlap to a short what-if test, with worked examples, a solving routine and the mistakes to avoid.
Updated 29 September 2026
Star Battle strategy: regions, rows and counting
The five techniques behind every star battle on Point Paper, from clearing around a star to counting stars across groups of regions, sorted by the level that first needs them.
Updated 29 September 2026
Halves strategy: pairs, gaps, counting and unique lines
The five techniques behind every Halves puzzle, from the pairs and gaps that finish Easy grids to the counting and line comparisons that Hard ones need, with worked examples.
Updated 29 September 2026
Inequalities strategy: following the signs
How to solve inequalities puzzles, level by level: sign bounds and singles for Easy, chains of signs for Medium, pairs for Hard, with worked examples and a solving routine.
Updated 29 September 2026