The game wiki
For every game: the full rules, how it plays here, the methods that make you faster, its history and answers to the questions you ask yourself while playing.
Logic puzzles
- Sudoku: the rules and the solving techniques Sudoku rules and solving techniques with diagrams: scanning, naked singles, locked candidates, naked pairs, X-Wing, plus why 17 clues is the minimum.
- Minesweeper: rules, patterns and tips Minesweeper rules step by step, the patterns worth knowing (1-1, 1-2, 1-2-1, 1-2-2-1), how fast players play, and a daily minesweeper with no guessing.
- Nonograms: the rules and how to solve them Nonogram rules, a solving method with diagrams (slack, crosses, edges) and figures measured on 1,500 of the game's grids. Also known as griddlers or hanjie.
- Takuzu: how to solve the grid of 0s and 1s Takuzu rules, or binairo, or binary puzzle, solving techniques with diagrams (pair, sandwich, counting, distinct lines) and all 14 possible 6 × 6 lines.
Memory games
Reflexes and attention
- Reaction time: the test, the averages and how to improve How a reaction time test works, the average according to published studies, what your screen adds to the number, how to improve, and five signals to try daily.
- Schulte table: the rules, the method and what it really trains The Schulte table explained: rules, the gaze-at-the-centre method, measurements on 2,000 grids and what studies really say about speed reading.
- Stroop test: the effect explained and how to overcome it The Stroop test and Stroop effect explained: the 1935 experiment in numbers, what the test measures, its clinical version and a version you can play.
Arithmetic and estimation
Words and typing
- Typing speed: understanding WPM and getting faster What WPM means, how it is calculated, the average typing speed from a study of 168,000 people, QWERTY and AZERTY, and what one typo really costs you.
- Anagrams: meaning, examples and a method to solve them What an anagram is, famous examples, a method for unscrambling a word quickly, and which letters and endings come up most, measured on 520 English words.
Every guide also exists in markdown, for AI assistants: the list is in llms.txt.