Question for the room, is there a book somewhere or some clue (other than the 115v note) that helped you to find these solutions? Or did you just button mash?

I understand circuits and needing a loop (continuous segment) but no matter how many combos I tried it never read more than 25v and I do not understand why/why not.

What I'd like to know is why connecting the furnace up from behind "fixes" the cathode fault. I know that's not covered here but if anyone has the logic about it.. plz share. I tried bypassing the cathode from the front side but nope.

I'm with @alex here. Did the game designers really intend that we would confuse the "batteries" with the "jumpers"? The colours are on the jumpers not on the batteries. I got the first circuit by doing simple 2 equations with 2 unknowns math and when I tried for the second circuit it didn't work This is because the final jumper-less "yellow" battery counts?

Basic premise failure. If each "node" is a battery and we're just putting "jumpers" from one battery to the next to enable them to be part of the circuit, then the baseline circuit should ALWAYS have a fixed value (15 in the first go around, 20 in the second) and NEVER be a "no circuit condition. There is nothing indicating that you're connecting anode to cathode or vice versa for any given connection it simply connects and adds the voltage of that node. Hence the final node is already part of the circuit as a stand alone battery. The puzzle should have had a baseline non-zero voltage or some other method of making the final connection.

I moved the bridges at random for a while, and now some of them won't move at all. I understand the solution now, but I can't implement it because some of the bridges won't move. (K, for example, is extended away from the grid, and it's stuck there.) Any ideas? Thanks!

The first circuit values are Red 20,Yellow 15,Green 10, Blue 5. The first circuit solution ( from the screenshot above is : 2R+3Y+3G=115 . (2x20)+(3x15)+(3x10)=115 The second circuit ( after adding acid to the lake all battery values get progressively higher . Red 25, Yellow 20. Green 15,BLue 10. The second circuit image below shows 2Y+3G+3B=40+45+30=115. The highest value is always red on the left so it makes sense that blue is the lowest.

@hepzighyll you have three of each colour and you do not need to move any of them across the water just turn them around to connect them in a continuous chain ( electric circuit ) that starts at one pier and ends at the second . It does not matter at which pier you start right or left as long as you connect the right batteries in a continuous chain. To visualise the puzzle better draw a grid 3x4 where the 4 vertical rows represent the colours ( values of batteries ). you can see the grid in the screenshots . You have 3 yellows even if one of them does not have the yellow paint . if it stands in the yellow vertical row it is yellow. if you start from the right ( first puzzle screenshot above ) you will connect them in the following order :( G+G+G+Y+R+R+Y+Y) .

I don't get your solutions!! I can't physically move the reds from Right to Left as they're secured to the floor so will only turn 360 degrees & not move right across the water. I only have 2 yellows so how can the first solution contain 3 yellows? Very confused! I think you have to start puzzle on the Right as you go down steps where the GREENS are situated. Not sure where to go but that is how it is in my game! Helpful suggestions please.

You can also get 115v in the 1st setting using 2R+2Y+3G+3B. (2x20)+(2x15)+(3x10)+(3x5)=115.

I don't think I ever really solved this logistically, The only thing I figured out is what counts as a circuit and then I just bumbled about making as many different pathways that I could until I found the correct one.