How to play
- Goal
- Place every listed number in a matching-length slot so all crossing digits agree.
- How it ends
- A chart is won when every slot is filled consistently and every listed number is used once; there is no loss.
- Record
- Each chart keeps the time of its first solve and the public fastest first solve.
- Each straight white run of at least two cells takes one listed number, left to right or top to bottom. Use every number once. A crossing cell has the same digit for both numbers; the amber given digit stays fixed.
- The worked picture comes from Chart 001. A 6 is given at the bottom left. Of the two-digit numbers, only 62 begins with 6, so 62 must run across those two cells.
- Tap a number and then a matching run, or tap a run and then its number. If two matching runs cross, choose the direction before placing. Remove, Undo, Redo and Restart correct a placement. Restart keeps the first time; replays are practice. A chart finishes when every number and crossing agrees.
Controls
| Tap / click a number, then a run | Place a whole number across or down |
|---|---|
| Tap / click a run, then a number | Choose the slot first, then place |
| Tap crossing again / Across–Down | Switch the selected run direction |
| Arrow keys | Move the selected cell |
| A / D | Select across or down at a crossing |
| Enter | Place the selected number |
| Backspace / Delete | Remove the selected number |
| Z / Shift+Z / Undo / Redo | Reverse or restore a placement |
| Restart | Clear this chart; preserve its first time |
| Escape | Close a panel or return to the chart atlas |
| Gamepad | Move the cursor, cycle the number list, place, erase and reach every panel |
All 160 original charts have exactly one independently verified answer and a no-guess deduction trace. The first chart begins with a fixed 6. Sound follows the shared site setting.
Watch how to play
About Nansuke
An archivist’s slate turns the number skeleton into a parchment grid: every listed number belongs in one across or down run, and crossings share a digit.
Choose among 160 permanent charts. Every chart has one independently proved answer and a trace of simple deductions, with compact boards made for touch screens.
The first time you open a chart starts its clock. Your first solve stays in this browser, and an uninterrupted first finish can claim the named public best.
