How to play
- Goal
- Fill every row with 0–9 once, keep equal digits from touching by sides or corners, and make each column add up to its target.
- How it ends
- A chart finishes when every digit, row and column agrees; Undo and Erase repair mistakes, so there is no loss state.
- Record
- The fastest uninterrupted first solve of each chart is kept with its holder’s name; replay is practice.
- Fill each row with every digit from 0 through 9 exactly once. Zero is a real digit; an empty cell has no digit. Printed givens cannot change.
- Equal digits must not touch by a side or a corner. Equal digits may repeat farther apart in a column, and non-neighbouring rows may match.
- Add every column to match its target above the grid. Targets are outside the playable rows. In the worked example, 0 + 4 + 0 = 4; a row separates the two zeros.
- Select a cell, then tap or type its digit. Notes are optional pencil marks. Erase, Undo and Redo repair mistakes.
- On phones, switch between columns 1–6 and 5–10. The four-row chart may scroll vertically on short screens; Show lower rows helps reach it.
- Restart keeps the first clock. Reload preserves ink, notes and Undo; resumed finishes stay local. Replay is practice.
Controls
| Mouse / touch | Select a cell, then choose 0–9; Erase clears it; Notes switches pencil marks |
|---|---|
| 0–9 / Delete | Enter a digit / erase the selected editable cell |
| Arrow keys | Move between cells and reveal the selected column |
| N | Toggle Notes |
| Z / Y | Undo / Redo |
| R | Restart confirmation |
| Controller | D-pad moves; A chooses a digit; X erases; Y toggles Notes; shoulders Undo/Redo; B returns; Start settings. |
Tips for Tenner Grid
- Start with one blank Subtract the other digits from a column target when only one blank remains.
- Use the row inventory A row missing one digit is forced even before checking its column.
- Watch diagonal neighbours A matching digit one row away and one column across still touches.
- Keep zero in mind Zero contributes nothing to a sum but still occupies its place in the row.
Questions about this game
Can a column repeat a digit?
Yes, if the equal digits do not touch. A row between them is enough.
Does zero mean empty?
No. Zero is one of the ten digits. Erase makes a cell empty.
Are the target numbers a row?
No. They sit outside the playable grid and describe column totals.
Does changing the phone view create another chart?
No. The two views overlap in columns 5 and 6 and share one ten-column chart.
Can Replay improve my first time?
No. Your first finish remains saved; Replay is practice.
All charts are open. Notes are optional and never count toward completion. Your first finish stays unchanged; Replay is practice.
Watch how to play
About Tenner Grid
Complete a lamplit ledger with large decimal digits. Row uniqueness, touching neighbours and column totals work together to force the missing entries.
All 160 original charts are open: sixteen with two rows, seventy-two with three and seventy-two with four. Each has one independently verified ending and a complete deduction path.
Phones show two overlapping six-column views of the same ten-column chart; targets stay with their numbered columns.
