Comments on Puzzle #14639: Element 7
By Chris Thomas (Chromas)
peek at solution solve puzzle
quality: 
difficulty: 
solvability: line & color logic only
peek at solution solve puzzle
quality: difficulty: solvability: line & color logic only
Puzzle Description:
Nitrogen the 7th element of the Periodic Table has many uses. Some of the most common of which are saltpeter used in gunpowder, as the gas inside a light bulb, liquid nitrogen which is used as a cooling device for tissue samples. Last but not least nitrogen is found in the air we breath making up about 70% of it!
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