Hidoku (PuzzleMadness)

Hidoku, also known as Hidato, gives a grid with some numbers filled in. You complete it so that the numbers 1, 2, 3 and so on up to the number of squares form one continuous chain, each one in a square touching the previous one, diagonals included. On a 7x7 grid the chain runs from 1 to 49; on an 8x8 grid to 64.

The daily page opens today's puzzle on its own, and its title carries the date (on 3 October 2026 it read "Daily Medium Hidoku Puzzle for Saturday 3rd October 2026"). There is a separate dated puzzle for each size from Small to Large. The Mixed page is a fourth grid with its own size, so a full day is four puzzles. 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 Hidoku monthly and all-time leaderboards, where only your best score on any one puzzle counts.

Look for gaps of one: if 12 and 14 are placed and only one square touches both, 13 goes there. Then look at longer gaps and count whether the distance between the given numbers allows the path. The start is not always at 1; begin wherever the givens are close.

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.