Japanese Sums

About Japanese Sums

Play Japanese Sums puzzle online free! Place digits 1-N in cells so outside clues match the sums of contiguous number groups. 30 logic-deduction levels from Beginner to Expert.

Description provided by GameZipper.

How to play

1. Numbers outside the grid show sums of contiguous digit groups in each row/column, listed in order.
2. Click cells to place digits 1-N. Each group of touching digits must sum to the matching clue.
3. No digit 1-N may repeat in any row or column.
4. Right-click or long-press a cell to mark it empty (black). Empty cells separate number groups.
5. When all cells correctly match the clues, you win!

Controls

This game supports touch, keyboard, mouse input; the exact controls are explained inside the game.

Questions

What is Japanese Sums?

Japanese Sums is a number-placement logic puzzle. Place digits 1-N in some cells of an NxN grid. Numbers outside the grid show the sums of contiguous digit groups in each row and column, in order.

How do I play Japanese Sums?

Click a cell to place a digit (cycle 1 through N), right-click or long-press to mark it empty. The outside clues show the sums of contiguous number groups. No digit repeats in any row or column.

Is Japanese Sums free?

Yes! Japanese Sums is 100% free to play in your browser with no download. 30 levels from Beginner to Expert.