Tendo: One Path
One path. Every dot.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
A new puzzle every day at midnight UTC. One line through every dot, and exactly one way to draw it.
One puzzle a day. One line through it.
Draw a single unbroken line that touches every dot exactly once. Don't lift your finger. Don't visit a dot twice.
There is exactly one way through. Not one intended way — one. Every board is checked before it reaches you, and the day it cannot be checked is a day you don't get a puzzle.
THE WEEK HAS A SHAPE
Monday is eight dots and takes a minute. Sunday is fifteen and does not. The board grows across the week, so the puzzle you meet on a Tuesday morning and the one waiting on Sunday are different kinds of afternoon.
Each week is named for something the boards do that week — bridges, crossings, dead ends, symmetry. The name is a line about the shape of the thing, not a lesson about it.
WHAT'S HERE
· A new puzzle every day at 00:00 UTC
· Exactly one solution, every day
· Practice boards once you've finished the day's
· Your solve time against everyone else's
· English, 日本語, 繁體中文, 简体中文
· Works with no connection
· No account, no sign-in, no email
WHERE IT COMES FROM
The puzzle is William Rowan Hamilton's. He devised it in 1857 and sold it to the London games maker John Jaques for £25; it reached shops in 1859 as the Icosian Game, a wooden board with pegs and a piece of string. The board is long gone. The question it asked — can you visit every point exactly once, and how would you know — is still open in the general case, and is one of the questions modern computing is built on top of.
Tendo is that question, once a day, small enough to hold.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Crealize LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Crealize LLC
- Size
- 14.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 KKD Studios