Colony Flow! Level 406 Walkthrough
Intermediate
How to clear Colony Flow! Level 406
Colony Flow! Level 406 is a dense board built around the Pink and Dark Blue pairs — more colors than the early boards, so order starts to matter. Most failed runs here happen in the first three moves, so the order below matters more than speed.
- 1
Survey the Pink lines
Find every Pink and Dark Blue pixel before touching anything. A quick scan of where the Pink corridor can go decides the whole board.
- 2
Open with the ${corner} corner
Start by dragging the Pink pair in the top-right corner home. That line never blocks another color, and it frees the edge so the inner routes stay open.
- 3
Route the ${b} pair before it seals
Watch the Dark Blue pixels crossing the Pink route near the right side. Clear the Dark Blue pair first — if the Pink line seals that corridor early, the Dark Blue pair is cut off and the run restarts.
- 4
Clear the long edge routes
Edge lines never need the center. Take them while the board is still open, then check the Dark Blue pair is still reachable before moving on.
- 5
Re-check the ${a} path
After the edge work, Pink usually has one clear lane left. Trace it mentally — if another color has grown into it, undo one step instead of forcing it.
- 6
Finish the center last
Settle the inner pairs once the edges are done. The center needs the most open space, so it always goes last on a intermediate board like this one.
Pro tips for Colony Flow! Level 406
Outside in
Handle outer pairs first, then move inward. It prevents inner pixels from being blocked and works for almost every stage.
Mind the Pink corridor
Do not let the Pink line fill a corridor completely — the Dark Blue pair needs to cross it later on this board. Leave one open cell.
Reset when lost
If you have made four or more moves without a clear plan for Dark Blue, restart. A fresh board is faster than salvaging a tangled state.
