About SquarO
In a moonlit Orenvalt observatory, each engraved square names the number of stars that must shine at its four corners. Light the brass sockets and watch neighbouring counts settle into gold.
Choose from 180 original charts in three shelves: 4×4, 5×5 and 6×6 squares. Every chart has one independently verified answer and a chain of local deductions; clear marks help record dots that must stay dark.
The clock starts when a chart opens and keeps running through Undo and Restart. Your first solve is saved locally; an uninterrupted first solve can set the verified public best, shown with its holder on the chart card and beside the clock.
How to play
- Goal
- Light the corner dots so each square has exactly the number of lit corners shown inside it.
- How it ends
- A chart is complete when every square's count is correct; there is no loss.
- Record
- Your first solve time is kept per chart, and the fastest verified first solve appears with its holder.
- Each square counts the lit dots at its four corners. A 1 needs exactly one lit corner; a 0 rules out all four. Light or mark clear the shared dots until every square agrees.
- Choose Light or Mark clear, then tap a corner. A second tap removes that mark. Clear marks are notes and do not count toward a square. The selected dot highlights the nearby clues it can change.
- Undo reverses one mark; Restart clears every mark after confirmation, with the clock still running. A chart has no loss. A reloaded attempt keeps its progress and first time locally but cannot submit a fresh public record.
Controls
| Tap / click a dot | Light it or mark it clear with the selected brush |
|---|---|
| Right click a dot | Mark it clear |
| Arrow keys | Move among the dots |
| Space / Enter | Use the selected brush |
| L / X | Select Light / Mark clear |
| Backspace / Delete | Erase the selected mark |
| Z | Undo the last mark |
| Escape | Close a panel or return to the chart archive |
All 180 charts have exactly one answer, independently verified at build time. The timer uses wall and monotonic clocks and never pauses while a chart is active. Resumed attempts stay local-only for public ranking. Progress and reduced motion save under morass.squaro.v1; sound follows the shared site setting. No ads or analytics run inside the game.
