Game guide · JSYRSD
Kakurasu: from controls to your first round
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. Keep the goal in mind before your next move. 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.
A focus for your next round
Begin with the basic rule, then follow the result of your action. Tap cells to mark or clear them. Current totals are displayed alongside the target totals. Try the rule on the board, then read the next instruction.
What the game asks you to do
Read the position before choosing your next action. Mark cells so every weighted row total and column total matches its clue. Start a new round when you are ready to try again.
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.
Your inputs
Read the position before choosing your next action. Tap a square to mark or clear it. Undo restores the last state. New puzzle generates another checked board. The game area remains available above the explanation.
A closer look at one example
Begin with the basic rule, then follow the result of your action. 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.
Check this before moving on
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. Start a new round when you are ready to try again.
Read these answers for extra help
For this game, what is the aim of Kakurasu?
Mark cells so every weighted row total and column total matches its clue. Keep the current game state in view while applying this rule.
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. The worked example offers another way to follow the rule.
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. The instructions above use these same rules.
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.
For this game, 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. Scores here do not represent cash or prizes.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. No download or player account is required.
When I start, 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.
For this 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. You can start a new round from the game controls.
On this page, does each generated puzzle have one solution?
The generator searches the row-mask combinations and only accepts a puzzle with exactly one solution. You can start a new round from the game controls.
For this game, can I clear a square?
Yes. Tap a marked square again, or use Undo. Use the labelled controls for your next action.