events.critelli.technology / Opus Magnum Tournament 2026 /

Week 4: Roshambonite

 

Roshambonite

METRICS
Sum (Cost + Cycles + Area)
Bounding Hexagon > Cycles > Cost

("Bounding Hexagon", or bestagon, is the smallest axis-aligned hexagon that contains the area that your solution is using. The Glyph of Disposal, for example, completely fills a bounding hexagon with a side length of 2, and the input and output of this old puzzle mark a bounding hexagon of 3 and 4, respectively.)

REAGENTS
Roshambonite Tailings

PRODUCTS
Roshambonite






JOCELYN: If this is what you need, I’ll make it for you. What are you using it for?
???: It’s roshambonite. It’s a coating material. On a lens, it gathers more light. You don’t need to know more than that.
JOCELYN: Oh, that’s okay, I know what roshambonite does. It expands the light collecting radius past the edges of the glass and twists it into a beautiful spiral. But what do you use it for?
???: …oh, yes, alchemical engineer. I should remember.
???: See that desk over there? It was a transmutation engine, once. A little of the machinery is still there. You should be able to connect your cabinet to it to use a larger workspace.
JOCELYN: Great! I’ll do my best!

[click here after solving puzzle to reveal post-solve flavortext]

JOCELYN: What’s your name?
???: Tosa. Tosa De La Sе́rolo.
JOCELYN: It's good to meet you!
TOSA: Next you’ll ask me to step out of the shadows.
JOCELYN: It’s okay, you can stay there. I’m not bothered if you’re sensitive about it.
TOSA: I am. There’s much you don’t need to see.





download: OM2026_W4_Roshambonite.puzzle (where do i put this?)

submission form

to be accepted, solutions must be submitted by april 5, 2026 at 13:59 UTC

by what name would you like to be known?


how can you be contacted? (fill in either or both)



entering a secret key (8+ characters) lets you see your solutions and add notes after submission




which .solution files would you like to submit? (where do i find these?)