Colony Flow! Level 1670 Solution: Routing Order and Jam Prevention

To clear Level 1670 in Colony Flow! without using paid boosters or slot continues, route unobstructed outer color groups first to open main exit channels, keep your bottom buffer dock nearly empty, and clear the dense central grid vertically rather than horizontally.

Board Layout and Jam Risks on Level 1670

Level 1670 features an asymmetrical layout where multi-colored streams converge on narrow central conduits. One side of the board offers direct paths to active matching nests, while the opposite side traps matching units behind staggered blockers of different colors.

The primary failure point is premature routing into the bottom holding buffer. Because placing more than three mismatched units into the buffer without an active match triggers a loss, you cannot use the tray for general staging. Every unit sent to the dock must immediately expose an active match behind it.

Four-Phase Routing Order

To prevent gridlock, work strictly from the outside borders inward toward the central bottleneck.

Phase	Priority Targets	Board Location	Tactical Objective
1. Opening	Exposed primary colors	Outer perimeter flanks	Clear direct lines into active gates without sending units to the buffer.
2. Unlocking	Single obstacle units	Central chokepoints	Move an obstacle to the buffer only when it directly exposes two or more matching units behind it.
3. Main Flow	Dense secondary clusters	Core central lanes	Drain the bulk of the color clusters straight through cleared central paths.
4. Resolution	Segmented reserves	Deep rear corners	Route remaining isolated units through open paths to finish the board.

Begin Phase 1 along the outer upper and left edges. Tap only units that have a completely open route to an exit nest, keeping all buffer slots completely empty during the initial board clear.

Buffer Slot Discipline

Maintain at least two empty buffer slots throughout the attempt to maintain a safety cushion against accidental gridlock.

Before moving any blocker that cannot immediately reach an exit nest, check the unit sitting directly behind it:

If clearing the blocker reveals another mismatched obstacle, leave it alone and find another open path.
Only commit an obstacle unit to the buffer if doing so instantly frees at least two matching units that can flow directly into an active nest.
Never alternate moves between opposite sides of the board if doing so leaves multiple incomplete color sets occupying dock slots simultaneously.

Clearing Core Chokepoints

The center of Level 1670 contains tightly packed lanes forming an interior bottleneck. Clearing horizontally across this area causes cross-traffic jams because incoming lines hit blocked angles at intersection points.

To dismantle the center safely:

Trace lines backward from the delivery exits to identify the base obstacle causing the blockage.
Peel units vertically along columns rather than sweeping across rows from left to right.
Drain the deepest vertical columns first to create lateral space, allowing transverse and diagonal units to maneuver through central junctions without meeting head-to-head.

Endgame Cleanup

Once the center is cleared, the remaining board consists of isolated single units and pairs in the rear corners.

To finish without failing on the final moves:

Compare your remaining corner units against the required capacities of the remaining nests before tapping.
Drain complete color batches in full before initiating a new color stream.
Wait for movement animations to finish settling before tapping the next unit to prevent misqueued inputs.