Ayidoku: a free turtle logic puzzle · Ayihoun

AyidokuOne turtle per row, per column and per coloured area, and they never touch. 10 grids a day, 3 levels, no ads. Free.About: AyidokuAyidoku is a gentle logic puzzle created on Ayihoun: place turtles in a grid of coloured squares. Only one turtle per row, one per column and one per coloured area, and two turtles must never touch, not even diagonally. Ten grids a day across three levels, each with a single solution. No maths, just reasoning.How to play

Choose a level: easy (7 by 7 grid), medium (10 by 10) or hard (15 by 15).

Tap a square to place a turtle, or to mark it with a cross once you are sure it stays empty.

Every row, every column and every coloured area must hold exactly one turtle.

Two turtles cannot be neighbours, neither side by side nor diagonally.

The grid is solved when every turtle is in place. Ten grids are waiting for you every day.

Tips

Start with the smallest coloured areas: they leave few choices.

A turtle rules out its row, its column and the eight squares around it: mark them with a cross.

If an area fits entirely in one row, that row belongs to it: no other area can have its turtle there.

What this game exercisesAyidoku trains logical reasoning by elimination, like sudoku, but with no numbers. It calls for method and patience, and it is truly satisfying when the last turtle finds its place. The big hard-level grid can be enlarged on a phone.Who is it for?Ayidoku is for sudoku fans and logic puzzle lovers, older adults who want a daily thinking game with no maths, and children who enjoy puzzles. Free, with no ads and no sign-up, it plays in large print on every screen. The easy grids make a good first step before trying the bigger ones.Frequently asked questions

Do I need to be good with numbers to play Ayidoku?

No. There is no maths at all: just turtles to place following three rules.

Does every grid have only one solution?

Yes. Every grid has been checked: each has exactly one solution, which can be found by logic.

How many grids are there each day?

Ten grids a day. After that, the game invites you to come back tomorrow.

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