What is the triangle doing here? The fourth column is the problem with this solution.
Viewing post in The Domino Lockpicking Company comments
Looking at this again this is a valid alternate solution, nice job. Idk why I didn't see it earlier. However, as it has the same underlying numbers as the intended solution, it doesn't break the puzzle. I'd still prefer if the exam had a fully unique solution but I'm happy leaving this alternate in.