PUZZLE / BROWSER PROJECT
0h n0
A line-of-sight logic puzzle: numbered blue dots count visible dots along rows and columns, while red dots block their view.
0hn0.com
Before you open it
- JavaScript enabled
- A pointer for toggling dot states
- No account or game files requested for the opening tutorial
Getting started
- Dismiss the original site's title screen, then choose How to play or Free play.
- Read the visible-dot rule: numbered blue dots see along their own row and column; red dots stop the line of sight.
- Follow the tutorial and choose a grid size for further play.
What we checked
The opening title led to the menu. Free play displayed a numbered 4x4 tutorial grid and size options from 4 to 9. We did not finish the puzzle or test daily challenges.
Desktop Chrome ยท October 10, 2026
This is 0h h1's companion, not the same rule set. The numbers describe line of sight, not adjacent mines as in Minesweeper.
Current instructions on the original project (opens in a new tab)Independent editorial pick; not attributed to Radiant Optimizer.