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Game Hidden Oxygen

Hidden Oxygen

As you know from your high school chemistry course, oxygen is made up of two atoms. Our Hidden Oxygen puzzle will be based on this. On the playing field you will see black tokens, to each you need to add two blue oxygen atoms. In doing so, you must take into account the location of the numbers on the left vertically and at the top horizontally. The puzzle is solved according to the rules of Japanese crosswords. If you know them, you can easily master our game. If you have any questions, do not be too lazy to go through the training level, each case is explained step by step there and very practical advice is given on how to solve the task quickly and correctly.
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