ONO: Brain Fog

Think straight with a new kind of puzzle that relies on your most basic brain functions - motion & prediction. Beneath the words of Wordle. Below the math of Sudoku.
Start a chain reaction that will clear all the O's from the screen -> ONO (no O's).
Starting with the simplest forms + rules, complexity and variety emerge as elements are added. A fun easy way to work on your clarity, focus and working memory.