Hidden Oxygen for Android

Figure out the correct arrangement of oxygen atoms.

Rules:

1) Oxygen atoms cannot be adjacent to each other, even diagonally

2) Numbers next to rows and columns tell how many oxygens should be in them

3) Each carbon atom needs 2 adjacent oxygens

Stuck? Press the hint button, which will explain how to come up with the next move.

FEATURES

Advanced Hint System: explains how to infer the next move

Interactive Tutorial: Walks with you through the basics

Experience-Based Progression: Solve levels to gain experience and unlock new difficulties

5 Difficulty Levels: Start with small and easy boards. Build your skills by solving more demanding ones. Finally, crack the hardest puzzles - they will make your brain sweat

Zoom & Pan: Ability to zoom in and move the board with pinch gesture

Unlimited Undo: Revert as far back as you want

Offline Play: No internet, no problem

If you like classic pen & paper puzzles or logic grid puzzles, you will love Hidden Oxygen. Check it out!

SEE ALSO

Follow me on Twitter: https://twitter.com/MeekBits

ACKNOWLEDGEMENTS

Sincere gratitude to Katarzyna Kowalak (https://katarzynakowalak.com) for help with UI design.

Icons by Icons8.

Sounds and music:

http://raisedbeaches.com/octave/

http://dustyroom.com/free-casual-game-sounds/

https://www.zapsplat.com/

https://freesound.org/people/elijahdanie/