Suguru (PuzzleMadness)

Suguru, also called Tectonic, is played on a grid split into irregular regions of one to six squares. A region of three squares holds 1, 2 and 3; a region of five holds 1 to 5. The only other rule is that equal numbers may never touch, not even at a corner. Some numbers are given at the start.

The daily page opens today's puzzle on its own, and its title carries the date (on 3 October 2026 it read "Daily Medium Suguru Puzzle for Saturday 3rd October 2026 (Easy)"). There is a separate dated puzzle for each size: Small, Medium, Large and Mixed. Past days stay in the archive, so a missed puzzle can be played later, and there is a print version and an image download of the grid. PuzzleMadness does not publish solutions: the site tells you when you have finished a grid correctly or made a mistake. Each completed puzzle adds to your total on the Suguru monthly and all-time leaderboards, where only your best score on any one puzzle counts.

Single-square regions are always 1. The largest number in a big region has few places to go, because it cannot appear in any smaller neighbouring region at all. The no-touching rule then removes candidates in a wide ring around each placed number.

PuzzleMadness is a British puzzle site with dozens of daily puzzle types in the browser, from many sudoku variants to logic grids such as Nurikabe, Hashi and Slitherlink. It is free to play and carries ads. A free account keeps track of the puzzles you have finished and puts your name on the leaderboards, and the badges next to usernames mark how many puzzles a player has completed.