Based on this puzzle and solution by @3blue1brown

Objective: Clear a 3x3 square at the upper left hand corner of the grid.

Rules: If a cell has an no neighbors directly to the right and bottom, it can "split" to fill those grid squares, leaving its original grid square empty.

Controls: Click on a cell to split it. Use the arrow keys or WASD to pan the camera. Use R to reset the camera pan, and Delete to entirely reset back to the original cell.