Add It Up

Clicking a number in the grid below will change the background color from white to green. Highlight numbers in green so that the highlighted numbers in each row and column add up to the number on the edge of the grid. There should be at least one number highlighted in each row and column. The highlighted numbers read left to right, top to bottom can be used as a promo code for 10% off a puzzle room experience. The code is valid until September 1, 2024.