Strategy guides
Rules and step-by-step solving techniques for every puzzle type.
- How to solve Star Battle puzzles: rules and strategiesLearn the rules of one-star Star Battle and the logic that cracks it: small regions first, line locks, the no-touch rule and counting.
- How to solve Takuzu (binary) puzzles: rules and strategiesTakuzu rules and the techniques that solve every binary puzzle: pairs, gaps, half-and-half counting and the = and × links.
- How to solve number path puzzles: rules and strategiesRules and strategies for number path puzzles: draw one line through every cell, visit the numbers in order, and avoid dead ends.
- How to solve Sudoku: rules and strategies for beginnersSudoku rules and the core techniques: scanning, single candidates, hidden singles and pairs. Works on 6×6 and classic 9×9 grids.
- How to solve flood fill puzzles in fewer movesStrategies for flood fill color puzzles: which color to pick, why wiping out colors matters and how to finish within the move limit.
- How to solve Hashi (bridges) puzzles: rules and strategiesHashi rules and the logic that solves it: forced double bridges, islands with few neighbors and keeping every island connected.
- How to solve sliding block puzzles: strategies that workStrategies for sliding block puzzles: work backward from the exit, deal with long blockers early and avoid moves that only shuffle.
- How to solve nonograms: rules and strategiesNonogram rules and the techniques that solve them: overlap, edges, complete lines and crossing out empty cells.
- How to solve water sort puzzles: strategies that workWater sort strategies: keep a tube empty, never bury a color, plan pours that complete tubes, and get unstuck with an extra tube.
- How to solve pipes puzzles: rules and strategiesPipes puzzle rules and strategies: start at edges and corners, avoid loops, lock certain tiles and connect every pipe to the source.
- How to solve code breaking puzzles in fewer triesCode breaking strategies: smart first guesses, changing one thing at a time and only playing codes that fit every clue.