Solve number puzzles by circling and erasing digits to make rows and columns add up to target sums. This game offers a clean design and varying difficulty levels to sharpen your mental math skills.




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Solve number puzzles by circling and erasing digits to make rows and columns add up to target sums. This game offers a clean design and varying difficulty levels to sharpen your mental math skills.




This logic puzzle game challenges your brain with number sums. Arrange numbers in a grid so rows and columns match target sums. Enjoy handcrafted puzzles with no timers or pressure, perfect for a calm, focused mental workout.






A unique puzzle game blending Sudoku and Nonogram mechanics. Players mark numbers on a grid to achieve correct row and column sums, using red to exclude numbers and green to include them. The goal is to make the external sum indicators turn green.