u/dailycantle

Linked dots never share a color. Four colors, numbered 1 to 4.

Fill all seven lettered dots. There's exactly one solution, and you never have to guess. The picture gives a hint where to start: one dot has only one color left.

Write your answer like A? B? C? D? E? F? G? and hide it with a spoiler: >!your answer!<

This board is from Cantle, a daily puzzle I made. The letters are only here so we can talk about the dots. One board a day, the same for everyone, on iPhone and Android: https://cantle.app/get

Solo dev here — Cantle came out on the App Store today, after a year of evenings.

It's a daily logic puzzle built on the four-color theorem: color the shapes so that none joined by a line share a color. Four colors are always enough, and every board is generated and verified to have exactly one solution, so you can always reason your way through, never guess.

One board a day, the same for everyone, with a global leaderboard by solve time. Streaks, and duels with a friend on one shared board. Practice mode with four difficulty tiers, any time. Free, no ads, no tracking, no account; an optional Pro adds a daily Hard board and the archive.

App Store: https://apps.apple.com/app/id6802254136

A practice board solved in 27 seconds: https://youtube.com/shorts/iYgT6zNN4Mw

Try a board in the browser: https://cantle.app/practice/

Android is in closed testing, out in October. Happy to answer anything — and curious whether the Hard boards feel hard enough.