Game guide · SUNSAYCN
Kakurasu: how a round works
Use the controls beside the game rather than guessing the rules. 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.
A small practice goal
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.
The challenge in front of you
The board gives you the information needed for the next action. 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.
Your inputs
Check the rule below as you play. 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.
An example before you play
The board gives you the information needed for the 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 common point of confusion
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.
Answers about the rules and controls
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.
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. You can start a new round from the game controls.
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 game is played locally in your browser.
When I start, which mistake should I avoid?
The value is the position in the row or column, not a uniform count of marked squares. Scores here do not represent cash or prizes.
During a round, 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. No download or player account is required.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The worked example offers another way to follow the rule.
On this page, 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. 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. No download or player account is required.
When I start, can I clear a square?
Yes. Tap a marked square again, or use Undo. The game is played locally in your browser.