Thought I'd give Machinarium a try as all the trophies are story related, however, I'm currently stuck on a ridiculously difficult triangle puzzle. The pattern is randomly generated so can't even turn to YouTube for help
I've started into this myself. I have it for the PC so I was prett confident of the first few puzzles but I never played that far into the game. I've just entered the arcade so I don't think I'm at your triangle problem yet.
Sounds like you may be passed me! It's the one where you have to get the three greens pegs to form a triangle.