Solve number puzzles by adding values in rows and columns to match target sums. Select correct numbers and remove incorrect ones. Verify that all row and column sums align with the solution.
Play by selecting cells that add up to 10 and clear combos to progress. Use Custom Mode with a Check button to confirm no moves remain. Empty the grid to unlock stages and increase IQ score.
Allows users to fill 9×9 grids with numbers 1-9. Tap cells to input numbers. Take notes and use hints. Access unique levels. Track progress and train brain skills.
