Colony Flow! Level 920 Solution and Routing Guide

To solve Level 920 in Colony Flow!, clear the exterior perimeter lanes before touching the center of the board. Freeing the outer border tiles creates the necessary buffer space to detour central blocker groups away from crowded junctions, allowing you to route each color cluster to its matching destination without deadlocks.

Step-by-Step Level 920 Routing Order

Level 920 features interlaced starting positions where multiple color groups sit close together in the interior while their exit targets sit on opposing sides. Entering the congested center early traps adjacent streams and cuts off exit routes. Follow this sequential order to clear the board cleanly:

Phase	Target Group	Recommended Routing Direction	Primary Objective
Phase 1	Outer boundary streams	Along outermost grid edges	Open peripheral buffer space and bypass lanes
Phase 2	Central keystone blocker	Outward into cleared perimeter lanes	Remove the bottleneck blocking secondary core paths
Phase 3	Secondary interior clusters	Directly across the cleared center	Drain remaining interior lines one color at a time
Phase 4	Corner remnant groups	Long arcs through empty outer tiles	Finish remaining nodes without intersecting lines

1. Clear Outer Border Lanes

Begin by scanning the perimeter for short, self-contained paths that reach matching collection points without crossing neighboring paths. Draw these trails closely along the outermost edge of the board. Avoid turning border trails inward toward the center, as interior transit space must remain completely open for later phases.

2. Dislodge the Keystone Central Blocker

After clearing the perimeter, identify the central group that acts as the primary physical barricade for two or more adjacent colors. Instead of pushing this cluster through the middle, route it outward into the newly vacated boundary lanes. Moving this keystone group away from the main intersection immediately opens direct paths for the surrounding colors.

3. Drain Secondary Core Groups Sequentially

Send the remaining central colors to their matching targets one full group at a time. Do not begin drawing a second color trail while the previous group is still in transit. Waiting for each ant stream to clear its junction prevents overlapping traffic jams.

4. Guide Isolated Corner Nodes

Once the core is empty, connect the remaining worker nodes located in the far corners. Because the center is clear, you can take longer, looping paths around remaining targets to avoid cutting across active destination points.

Routing Rules and Failure Points

To avoid board locks and unnecessary retries on Level 920, keep these path constraints in mind:

Transit clearing delays: Remember that an ant line claims tile space until the final unit fully enters the goal. Drawing a crossing path prematurely will cause an immediate collision.
Single-tile choke points: Do not route multiple paths through the same narrow lane or junction tile at the same time.
Early center cuts: Drawing a line straight through the center before detouring the keystone blocker cuts off adjacent clusters and creates an unresolvable stall.