What makes Level 207 stall?

Doubling the dark-blue cloak traffic leaves no buffer for white robe cards, which are enclosed by that cloak.

When should orange 20 start?

After white robe traffic is moving through the opened hood-face boundary.

Colony Flow! level guide

hard 7 colors

Open the blue 18, white 20/14 and cyan 15 front lanes, then separate the dark-blue cloak from the white robe before the orange centre.

If the player asks you to sign in, open the video on YouTube instead.

Clear the blue 18, white 20/14 and cyan 15 front field to expose the hood-face boundary.
Use the white 20 lane before extending the dark/blue 20 cloak traffic.
Alternate cyan 20/18 with white robe cards across the lower figure.
Clear dark 20 and blue 20 cloak lanes separately.
Use orange 20, then finish cyan hem and small accent tails on the open board.

Colors in this level:

Dark, White, Cyan, Orange, Purple, Yellow, Green

Board notes 5 details

Layout: White hooded figure inside a dark-blue/purple cloak with cyan hem and orange centre. The opening row is blue 18, white 20, white 14 and cyan 15; below it are dark 20, white 20, blue 20, white 14, then dark 15, white 20, cyan 20 and cyan 18.
Goal: Clear the dark cloak, white face and robe, cyan hem, orange centre and small yellow/green accents.
Opening: Use the blue 18 / white 20 / white 14 / cyan 15 front field to open the hood-face boundary before the repeated dark-blue 20 cloak lanes.
Danger Zone: The dark 20 and blue 20 cloak lanes fill the buffers and prevent white robe traffic from escaping if treated as one burst.
Mechanics: The dark enclosure must be perforated before the broad white figure and orange centre can use the same five buffers.

What makes Level 207 stall?
Doubling the dark-blue cloak traffic leaves no buffer for white robe cards, which are enclosed by that cloak.
When should orange 20 start?
After white robe traffic is moving through the opened hood-face boundary.