How to play
- Goal
- Leave numbers adding to ten in every room while the pale floor stays connected.
- How it ends
- A chart is solved when every room totals ten, shaded tiles never share an edge, and all pale tiles connect; there is no loss state.
- Record
- The fastest first solve of each chart is kept as a public record, with its holder's name.
- Tap a numbered tablet to shade it; tap again to restore it. Only pale numbers count. The small corner seal shows each room's pale sum. In the worked example, 7 + 3 + 4 is 14; shade the 4 to leave ten.
- Every outlined room must total exactly ten. Dark tablets may meet at corners but cannot share an edge. All pale tablets must form one connected floor. Red seals are under ten, amber seals are over ten, and green seals balance.
- Undo restores the previous shading. Restart clears the chart while its first-deal clock keeps running. A chart completes automatically when all room sums and both floor rules hold; there is no loss state. Replays are untimed practice.
Controls
| Tap / click a tablet | Shade or restore that number |
|---|---|
| Right click a tablet | Restore a shaded number |
| Arrow keys | Move focus through the chart |
| Space / Enter | Toggle the focused tablet |
| 1 / 0 | Shade / restore the focused tablet |
| Backspace / Delete | Restore the focused tablet |
| Z | Undo the previous shade |
| Escape | Close a panel or return to the atlas |
All 160 charts have stable IDs and exactly one independently verified solution. Private witnesses and the exact counter do not ship. First-solve progress uses morass.shiroten.v1; sound follows the shared site setting. No ads or analytics run inside the game.
About Shiroten
The Moon Accountant's Ledger is a carved fantasy folio of ivory numbers and dark slate. Each outlined room must keep a pale sum of exactly ten.
Explore 160 original charts from 5×5 to 8×8. Every chart has one independently proved shading; edge-touching dark tiles and disconnected pale floors are forbidden.
Your first solve time stays in this browser. An uninterrupted first solve can claim the verified public best shown beside the clock and on its chart card.
