Hidden Oxygen

Hidden Oxygen is a logical grid-based puzzle game that is inspired by Sudoku. You need to figure out the correct placements of oxygen atoms. Rules Oxygen atoms cannot be adjacent to each other, even diagonally, Numbers next to rows and columns tell how many oxygens should be in them, Each carbon atom needs 2 adjacent oxygens

Controls: Click once to change state, Click and drag to mark multiple cells as empty, Zoom with mouse scroll wheel, Pan with right button