Puzzle Grid

A 20x20 grid of randomly-generated puzzles. Start by selecting a 5x5 grid and then selecting a square inside of it. It'll show you a puzzle, and you have to answer in the box below the canvas. Once you solve it, the square will give you a hint on whether a certain square should be on or off. Press space to change the color of the square that you solved (yellow is on and black is off). Keep going u…