Daily Masyu

A Masyu grid is a field of dots with some black and white circles, often called pearls. You draw lines between neighbouring dots to make one loop that never crosses or branches and passes through every circle. A white circle must be crossed in a straight line, and the loop has to turn in the cell just before it, just after it, or both. A black circle must be a corner, and the loop has to go straight through the cells on both sides of that corner.

Puzzle-masyu.com's daily game is the Special Daily Masyu, one puzzle per date that every player receives. The grid for 30 October 2026 was 30 by 30, bigger than the standard 25x25 Hard, so it is a long solve. The site also keeps Easy, Normal and Hard grids from 6x6 to 25x25 on hand, special weekly and monthly puzzles, and a Hall of Fame for the standard sizes. It is free with ads, patrons can remove them, and the puzzles also appear in the PuzzleGym app for iPhone and Android, published by Atanas Georgiev. The site's screens are offered in English and fourteen other languages, from German and French to Japanese and Hebrew. Patrons of the site can go back through the last 30 daily puzzles; everyone else plays the current day's.

Masyu suits people who enjoy line-drawing puzzles such as Slitherlink, and anyone who likes rules that look simple and lead to long chains of forced moves.