About Sun and Moon
Sun and Moon is a binary puzzle, the same family as the Tango game that became a daily habit for millions on LinkedIn. Each puzzle has exactly one solution.
24 levels, all on a 6×6 grid with exactly 3 suns and 3 moons in every row and column.
Sun and Moon at a glance
| Genre | Logic game |
|---|---|
| Price | Free, no download or sign-up |
| Controls | Tap |
| Typical game length | 5 to 10 minutes |
| Lives | None |
| Works on | Phones, tablets and computers, in any modern browser |
| Daily challenge | Yes, the same puzzle for everyone each day |
How to play Sun and Moon
- Tap a cell. Cycle through sun, moon and empty.
- Three and three. Exactly 3 suns and 3 moons in every row and column.
- Avoid three in a row. Never three of the same side by side.
- Follow the signs. = means same, × means different.
Rules
- Given cells cannot be changed.
- Mistakes are highlighted in red.
Levels and difficulty
24 levels, all on a 6×6 grid. Early levels give you extra starting clues; later levels give only the minimum needed, so you need more logic. Every puzzle has exactly one solution. Your progress is saved on your device, and you can replay any level you have unlocked.
Scoring
Up to 20 points per cell, minus time. Daily challenge scores can be shared with friends.
Tips and strategy for Sun and Moon
- Start where two identical symbols sit side by side.
- A × between two cells means one of each.
- Count what each line still needs.
How we built and tested Sun and Moon
Every puzzle is generated from a complete valid grid, and a solver confirms it has exactly one solution before it is shown.
Frequently asked questions
Is this LinkedIn Tango?
It uses the same classic binary puzzle rules with our own design.
Does every puzzle have one answer?
Yes, each is checked by a solver.