Overview
color-tunnel dresses the grid in saturated lanes that feel like chromatic tunnels, and the design invites clean routes from entry to exit. Reserve broad central lanes for long links and shift tricky pairs to the perimeter, where short runs won’t compromise flow. Bends are taxes on space; minimize them and avoid snaking paths that create invisible walls across vital corridors. The presentation helps—bold colors read instantly, so you can plan routes without hesitation. Think in layers: first pass opens a backbone, second pass tidies edges, third pass commits longer links that glide through the tunnel. When crossings threaten, reroute early and respect the backbone; a single stubborn line through the center can choke three otherwise simple connections. The puzzle rewards rhythm over rush, and you’ll find that a steady cadence of straight links quickly restores order even if the start felt chaotic. A good run looks like train timetables—predictable, aligned, and elegant—and the final board appears calmer than when you started. It’s a highway design with a colorist’s eye, and it plays beautifully when you keep geometry honest.