One path.
Once a day.
Visit every dot exactly once. A daily ritual on the classic Hamilton-path problem — five quiet minutes of math.
Free in your browser today · iOS & Android coming soon
How it works
A single unbroken line.
No timers, no clutter, no accounts. Just one elegant puzzle, hand-checked for a unique solution, waiting each morning.
Trace the path
Draw one continuous line that touches every dot in the figure.
Visit each once
No dot twice, no line crossed back. Find the order that works.
Come back tomorrow
A fresh puzzle every day. Keep your streak, earn a quiet badge.
The daily ritual
Quiet math, by design.
Tendo strips the puzzle down to ink on paper. The same restraint behind a good crossword — a problem worth thinking about, and nothing in the way of thinking about it.
Made to respect you
Everything you need. Nothing you don't.
The whole game is free and complete. An optional Tendo Plus subscription adds quality-of-life extras — never content behind a wall.
No ads, ever
No banners, no interstitials, no tracking. The puzzle is the whole screen.
No account needed
Start playing instantly. Nothing to sign up for, nothing to remember.
Free & complete
Every daily puzzle, the archive, your streak — all included, no paywall.
Four languages
English, 日本語, 繁體中文, and 简体中文 — fully localized.
Works offline
Install it like an app. Today's puzzle plays even with no signal.
Calm by design
No streaks-or-die pressure, no notifications begging you back. Just the puzzle.