Game guide · BDPSFJS
Play Kakurasu with the rules at hand
Read the position before choosing your next action. 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. Try the rule on the board, then read the next instruction.
Generated 5×5 puzzles with an exact row-mask search for uniqueness before publication to the board. No calibrated difficulty labels.
One thing to notice as you play
The board gives you the information needed for the next action. Tap cells to mark or clear them. Current totals are displayed alongside the target totals. The game area remains available above the explanation.
The challenge in front of you
Use the controls beside the game rather than guessing the rules. Mark cells so every weighted row total and column total matches its clue. The game area remains available above the explanation.
The playing sequence
- 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.
The controls to know
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 the rule on the board, then read the next instruction.
See how the rules apply
Read the position before choosing your next 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.
A useful caution
Use the controls beside the game rather than guessing the rules. 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.
Questions that come up during play
On this page, 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. The instructions above use these same rules.
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. A new round resets the current game.
On this page, which mistake should I avoid?
The value is the position in the row or column, not a uniform count of marked squares. Keep the current game state in view while applying this rule.
On this page, 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 game is played locally in your browser.
How many people can play here?
Solo. This is local browser play, not internet matchmaking. Keep the current game state in view while applying this rule.
For this game, what does a marked square contribute?
Its column number to the row total, and its row number to the column total. No download or player account is required.
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. No download or player account is required.
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. The controls work with mouse or touch.
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.