Game guide · GDFCWJ
Kakurasu: from controls to your first round
A careful first move helps you understand the round. 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. 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.
Practice with a purpose
Use the controls beside the game rather than guessing the rules. 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 purpose of your moves
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.
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.
Making selections and moves
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. Start a new round when you are ready to try again.
One way to understand the rules
Keep the goal in view while choosing a move. 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.
Keep this in mind
The value is the position in the row or column, not a uniform count of marked squares. Try the rule on the board, then read the next instruction.
A few questions answered
When I start, 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.
For this game, 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 controls work with mouse or touch.
On this page, 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. No download or player account is required.
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.
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 controls work with mouse or touch.
For this game, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Scores here do not represent cash or prizes.
When I start, what does a marked square contribute?
Its column number to the row total, and its row number to the column total. Scores here do not represent cash or prizes.
Why can row and column contributions differ?
A square in row 2, column 5 contributes 5 to its row and 2 to its column. Use the labelled controls for your next action.
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. The worked example offers another way to follow the rule.
Can I clear a square?
Yes. Tap a marked square again, or use Undo. A new round resets the current game.