This isn’t the hardest problem I’ve solved but I was damned proud of solving it when I did... Was about to tape out a chip when we got a last minute change ord

This isn’t the hardest problem I’ve solved but I was damned proud of solving it when I did... Was about to tape out a chip when we got a last minute change order... a 100kohm resistor needed to be added. This was an already laid-out, routed and optimized chip design that was ready to be fabbed. A few hours later (including at least an hour of shouted obscenities) I found that I was able to snake through 100kohms of poly and diffusion resistor into our design without moving anything, violating any design rules or changing any operating points even after parasitic extraction.