How to play
- Goal
- Fill each room with adjacent equal-number pairs and satisfy the circled border sums.
- How it ends
- Fill every cell, use each room label twice in an adjacent pair, satisfy every sum and avoid four equal values in a 2×2 block; mistakes can always be undone.
- Record
- The fastest first unaided solve of each chart is recorded.
- A room with 2K cells uses every number from 1 through K exactly twice: four cells use 1 and 2; six cells use 1, 2 and 3.
- The two copies of each number must share an edge inside that room. Equal values may touch across room borders.
- Each circle adds only the two cells beside its edge. It does not sum a whole room.
- Nowhere may a 2×2 block contain four equal numbers, even across room borders.
- Choose a number and tap a cell, or use arrow keys and number keys. Clear, Undo and Redo change one cell entry at a time. Restart keeps the first clock running.
Controls
| Tap / click | Choose a number, then enter it in a cell |
|---|---|
| Arrows + number keys | Move the cursor and enter a room label |
| Clear / Delete / Backspace | Clear the selected cell |
| Z / Y / R | Undo / Redo / open Restart confirmation |
| Pan / P | Move a large chart without changing entries |
| Whole chart | Open a read-only overview from the chart menu |
| Escape | Cancel a gesture, close a dialog or return to the atlas |
| Controller | D-pad move; A enter; X clear; Y Undo; shoulders cycle numbers; B back; Start settings |
Tips for Kazunori
- Start with small rooms A two-cell room has only one label, so both cells must be 1.
- Use the border sums An entered neighbour can determine the other cell of a circled sum.
- Check across borders Four equal cells in a 2×2 block are forbidden even when they belong to different rooms.
Questions about this game
Can equal numbers touch across rooms?
Yes. Each room has its own adjacent pairs. Only a full2×2 block of four equal numbers is forbidden.
Can a room reuse one number for two pairs?
No. Each label from 1 through half the room size appears exactly twice.
Does Restart reset the clock?
No. The first clock keeps running. Replays after a finish are Practice and preserve the first time.
Cell entries and Undo save in this browser. The first clock starts when a chart is selected. Reloaded attempts stay local; replay is Practice and preserves the first finish.
Watch how to play
About Kazunori
Kazunori joins room-sized number pairs with sums along their borders. Room shapes, pair placement and the rule against four equal values in a square work together.
The 96 charts and worked example are original. Four open shelves run from 4×4 to 10×10.
