Game guide · FYJYSW
Learn the rules of Kakurasu
The example and rules describe the same game you can play above. Mark cells so every weighted row total and column total matches its clue. Try the rule on the board, then read the next instruction. A 5×5 grid shows target sums at the right and bottom. Keep the goal in mind before your next move.
Generated 5×5 puzzles with an exact row-mask search for uniqueness before publication to the board. No calibrated difficulty labels.
Something to practise
A careful first move helps you understand the round. Tap cells to mark or clear them. Current totals are displayed alongside the target totals.
The goal to keep in mind
Mark cells so every weighted row total and column total matches its clue. The game area remains available above the explanation.
The steps to play
- A 5×5 grid shows target sums at the right and bottom.
- A marked cell contributes its column number to its row sum, and its row number to its column sum.
- Tap cells to mark or clear them. Current totals are displayed alongside the target totals.
- Match all rows and columns to complete the puzzle. Each generated puzzle is checked to have one solution.
Keyboard and screen controls
A careful first move helps you understand the round. Tap a square to mark or clear it. Undo restores the last state. New puzzle generates another checked board.
Try this example
A careful first move helps you understand the round. Marking columns 2 and 5 in the same row gives that row a total of 7. A mark in row 3 contributes 3 to its column. Try the rule on the board, then read the next instruction.
An important reminder
A careful first move helps you understand the round. The value is the position in the row or column, not a uniform count of marked squares. The game area remains available above the explanation.
If you are unsure
For this game, what is the aim of Kakurasu?
Mark cells so every weighted row total and column total matches its clue. The controls work with mouse or touch.
On this page, how do the controls work?
Tap a square to mark or clear it. Undo restores the last state. New puzzle generates another checked board. You can start a new round from the game controls.
For this game, can you show an example?
Marking columns 2 and 5 in the same row gives that row a total of 7. A mark in row 3 contributes 3 to its column. Use the labelled controls for your next action.
During a round, which mistake should I avoid?
The value is the position in the row or column, not a uniform count of marked squares. The worked example offers another way to follow the rule.
When I start, what rules and limits are used here?
Generated 5×5 puzzles with an exact row-mask search for uniqueness before publication to the board. No calibrated difficulty labels. The worked example offers another way to follow the rule.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The controls work with mouse or touch.
For this game, what does a marked square contribute?
Its column number to the row total, and its row number to the column total. The controls work with mouse or touch.
During a round, why can row and column contributions differ?
A square in row 2, column 5 contributes 5 to its row and 2 to its column. The game is played locally in your browser.
During a round, does each generated puzzle have one solution?
The generator searches the row-mask combinations and only accepts a puzzle with exactly one solution. Keep the current game state in view while applying this rule.
When I start, can I clear a square?
Yes. Tap a marked square again, or use Undo. The instructions above use these same rules.
