Rip-up and reroute

Rip-up and reroute. The design comes in already routed, but congested: several tiles carry more routes than their capacity (red). Rip up and reroute the offending nets.

• No tile over capacity - click a net to flip its bend and pull it off the overloaded tiles, without pushing a different tile over.

This is the loop a router runs to resolve congestion. Clear every overflow, then Submit design.