Hidden Oxygen
Description
Hidden Oxygen is an atom arranger puzzle game. The player's goal is to figure out the correct layout of oxygen atoms on a square board. By understanding of the board, the next, correct move can be deduced.
There are a number of 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 two adjacent oxygens.
