Sumplete is a free online numerical thinking game where all logic is done locally in your browser.
Play Instructions
basic rules: Click on the number in the grid to "delete" it, so that the sum of the remaining numbers in each row and column equals the target value on the right and below
switching state: Click on the number to toggle between "Keep" and "Delete"
real-time feedback: The current sum of rows and columns is displayed in real time, and the matching target turns green.
Difficulty Selection: Support 3×3, 4×4, 5×5, 6×6, 7×7 multiple size
check function: Click the "Check" button to verify that the answer is correct
