Get quick and convenient access to just the hints you need for Obsidian, without staying on our website. Just download a free trial
version of our UHS Reader software and
a copy of these hints. You will get the
same gradual hints you see here -- unlike ordinary cheats or a
walkthrough that can spoil your game.
You can also buy the full version of the UHS Reader
for Windows or macOS. For just $14.95, you get full access to hints for
hundreds of games and 1 year of free updates. You can also search, decode, or print an entire
game's worth of hints at once.
Ask the Author
If you have questions about a puzzle that aren't answered
anywhere in these hints,
you may contact the author.
Obsidian Hints
How exactly do chemicals mix?
1 of 10: You can have either one or two chemicals in each of the beakers -- the chemical(s) are indicated by the monitors to the sides of the beakers. Each chemical is represented by a color and a number, and you mix the contents of the beakers by pressing the button in between the two.
2 of 10: And you can empty a beaker by pressing the button next to the beaker.
3 of 10: What happens is partially determined by how many chemicals are in each beaker, although there are some chemicals that just don't mix.
4 of 10: Red and blue can never be in the same beaker.
5 of 10: If you have a single chemical in each of the two beakers, mixing them will cause the contents of the chemicals to be put together in the same beaker -- as long as you're not trying to mix red and blue.
6 of 10: When you have one chemical in the left beaker and two in the right one, the chemicals will sometimes move around.
7 of 10: Again, as long as you're not mixing red and blue, what happens is determined by the numbers of the chemicals.
8 of 10: If the single chemical has a higher number than _both_ of the chemicals in the beaker in the right, the one with the lowest number will move to the left and the one with the highest number will move to the right. For example, 2 + 12 = 2 + 12 (nothing happens), because the "2" on the left is not greater than the "2" on the right. But 3 + 12 = 1 + 23 -- the "3" on the left replaces the "1" on the right. (I'm ignoring the colors because they're not really important.)
9 of 10: Something similar happens when you mix two pairs of chemicals.
10 of 10: One of the two chemicals on the left must have a higher number than both on the right -- for example, 14 + 23 = 12 + 34 -- the "4" replaces the "2", but the "1" on the left stays in place.