How to play
- Goal
- Shade cells so every row's column weights and every column's row weights add to its edge target.
- How it ends
- A chart is solved when all row and column sums match; there is no loss state.
- Record
- The fastest first solve of each chart is kept as a public record, with its holder's name.
- The top labels 1 through the chart size give a shaded tile’s value in its row. The left labels give its value in its column. Each shaded tile therefore adds two different weights: one to the row target on the right, and one to the column target below.
- Each edge dial shows your current sum / target. Jade means exact, bronze means under, and red means over. A zero target stays exact while its line is empty. The worked picture shows one shaded tile adding 2 to a row and 1 to a column.
- Shade or clear a tile with a tap. Leave other tiles blank; no X marks or Check button are needed. Undo reverses a move; Restart clears the chart without resetting its first-opening clock. A correct chart completes automatically. Replay is untimed practice. Returning to the atlas in the same page keeps the first clock and record chance; reloading an unfinished chart preserves it locally without a public record.
Controls
| Tap / click a slate tile | Shade or clear one tile |
|---|---|
| Tap / click an edge dial | Highlight its line and read the current and target sums |
| Arrow keys | Move focus through the chart |
| Space / Enter | Toggle the focused tile |
| Undo / Z | Restore the previous shading |
| Restart | Clear all shades without resetting the first clock |
| Escape | Close a panel or return to the atlas |
Every fixed chart has one independently verified answer and an elementary deduction trace. Private witnesses do not ship. Saves use morass.kakurasu.v1; sound follows the shared site setting. No ads or analytics run inside the game.
About Kakurasu
An Orenvalt counting hall holds a bronze tally altar. Shade its ink-dark slate tiles and watch violet seals wake beneath the gold edge numbers.
Explore 160 original charts across four open shelves. Every chart has exactly one independently proved answer and yields to simple row and column deductions.
Your first finish time stays in this browser. An uninterrupted first solve can claim the named public best shown on its chart card.
