Game guide · JXLGGC
Kakurasu: learn through an example
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. The game area remains available above the explanation. A 5×5 grid shows target sums at the right and bottom.
Generated 5×5 puzzles with an exact row-mask search for uniqueness before publication to the board. No calibrated difficulty labels.
Practice beyond the first move
Check the rule below as you play. Tap cells to mark or clear them. Current totals are displayed alongside the target totals. Start a new round when you are ready to try again.
Aim for this result
Use the controls beside the game rather than guessing the rules. Mark cells so every weighted row total and column total matches its clue. Try the rule on the board, then read the next instruction.
From the start of a round
- 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.
Getting comfortable with the controls
Take a moment to check the current turn. Tap a square to mark or clear it. Undo restores the last state. New puzzle generates another checked board. Keep the goal in mind before your next move.
An example before you play
Check the rule below as you play. 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. The game area remains available above the explanation.
Watch out for this
Check the rule below as you play. 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.
Questions about this game
During a round, what is the aim of Kakurasu?
Mark cells so every weighted row total and column total matches its clue. No download or player account is required.
When I start, how do the controls work?
Tap a square to mark or clear it. Undo restores the last state. New puzzle generates another checked board. Keep the current game state in view while applying this rule.
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.
For this game, which mistake should I avoid?
The value is the position in the row or column, not a uniform count of marked squares. Use the labelled controls for your next action.
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. Keep the current game state in view while applying this rule.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. You can start a new round from the game controls.
On this page, what does a marked square contribute?
Its column number to the row total, and its row number to the column total. A new round resets the current game.
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 controls work with mouse or touch.
When I start, does each generated puzzle have one solution?
The generator searches the row-mask combinations and only accepts a puzzle with exactly one solution. A new round resets the current game.
For this game, can I clear a square?
Yes. Tap a marked square again, or use Undo. The worked example offers another way to follow the rule.