Sure thing, let’s treat the PCB like a city map. Think of each pad as a node and each possible wire as an edge weighted by length. A shortest‑path algorithm, like Dijkstra, can find the minimal route between two components. If you’re connecting multiple points, that’s a traveling salesman problem—use a heuristic like nearest neighbor or a genetic algorithm to keep the total wire short while staying in the allowed layers. Remember to avoid crossing edges that aren’t allowed—plan a planar embedding first, then add vias only where needed. Need a quick sketch of the graph layout? Just give me the component list, and I’ll whip up a draft.

Here’s a quick set to start: Pads: A, B, C, D, E, F Connections: A‑B, B‑C, C‑D, D‑E, E‑F, F‑A (a loop) and A‑D (cross‑bar) Layers: keep everything on layer 1, but allow a single via if you need to drop from 1 to 2 for the A‑D link. Trace width: 0.25 mm for signal traces, 0.5 mm for power. That should give you a solid base to crunch the shortest‑path math. Let me know if you want more nodes or extra constraints.