Tuesday, November 19, 2013

H2O (QC-19)

H2O Puzzle Instructions
There are a number of molecules of water (H2O) in the grid, composed of two atoms of hydrogen (H) and one atom of oxygen (O). Locate the positions of the oxygen atoms, provided that no oxygen atom can touch another oxygen atom, not even diagonally. Atoms connect either in a straight line or in a 90 degree angle.
H2O Puzzles
H2O Puzzles

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