You can find the answer HERE (Inside the Hint box) :)
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I see... now it makes perfect sense, I could be mistaken, but you got wrong some numbers according to the scoresheets found on the internet --> https://imgur.com/2zYfW3m The cyan 20 is on the 2x single line, that makes 2x20 = 40, and the cyan 3 is on the first single part, making it 1x3 = 3, total = 43 for cyan. On the purple, the 4x3 is correct since it is on the 3x single line, but the 9 is also on second part of singles, making it 1x9 = 9, total 12 + 9 = 21 for purple. Finally, for yellow, 8 is on the first single part, and 2 is on the 2x single line, making it 8 + 4 = 12 for purple. As for the logic on the puzzle, I did in fact try to sum in the way you described but since I had the wrong number, there was no way to win this puzzle. Thanks for the help
EDIT: Nevermind this comment, just found out a Hint Paper you left inside the platinum chest that would make this puzzle possible to pass. It was just carelessness of my part to not look around enough.
Just finished the game and It was an wonderful experience. I will post the review after I'm done with the extra chapters since they are also part of the game. By the way, found a bug that makes the game crash, this was the only time that it happened to me. When fighting Serena right before the final boss: when the other underling(I'm not saying her name so people won't get spoiled) uses her area attack, my party counters it, but when all 4 members of the group counter her attack and one counter overlaps the other; it doesn't show their animations and the game crash. This happened in the middle of the fight and I had to re-do everything from the start... so please fix this whenever you can, since it's the only major bug found in the game. Here is a print with the error message --> https://imgur.com/6BiJxUH
I'll post my review both on the forums (I didn't knew you had a post there), and here to bump you up since you definitely derserve some more popularity because this game is awesome and I loved every single part of it. I'll be also buying it next month to support you, because right now saddly I don't have the money since I'm unemployed and live in other country, so USD is pretty costy for me. But this game is totally worth atleast $10 since it's top quality content. Looking foward for the sequel! :D
We are truly sorry for the issue you have experience. Honestly, we were acknowledged of this error, but it happened randomly with chance so we could not figure out the real cause. And it is hard to fix it at this moment, because we have not been working with the old engine for a long time.
We are also very glad to receive your generous support, as it will be a great help for the development of "Yggdrasil Chronicles: A Record of Valkadia". If you wish to try the early-access version, please send us a private message to our official fanpage on Facebook. We will contact and send it to you once it is ready, as we truly need some early feedbacks about the game.