Shestoku

The hexagon number puzzle. Six sides, two rules, no forbidden neighbors.

By Shestagons

One board for everyone, every day at midnight. Solve it, keep your streak going.

The approved collection and community submissions — every board verified solvable before it appears.

Endless fresh boards at four difficulties. Numbers 1 to N, always winnable, never the same twice.

Design boards hex by hex — islands, curved connectors, custom layouts — then publish to the site.

Impossibility bands, digit cliques, unique triples — the journal of the mathematics behind Shestoku.

Two rules: connected hexes can't hold consecutive numbers, and can't share a digit. That's it.

|a − b| ≠ 1digits(a) ∩ digits(b) = ∅numbers 1…N, each once

Try one right now

30 seconds

Click a hexagon and type a number — or drag one from the pool. Click a filled hexagon and press Backspace to clear it.

⏱ 0:00Instant hints

The rules

Connected hexes can't hold consecutive numbers or numbers that share a digit. Fill every hexagon to win.

Shestoku — from shest (“six”) and the -ku of sudoku: a number puzzle built on the six sides of a hexagon.