Why leave two holes open at the start?

One accepts white or blue support while the other stays available for the 20- and 3-lock releases.

When does the cat face become directly clearable?

Only after the long red-field counters fall and the hood layer opens.

Colony Flow! level guide

hard 7 colors

Drain the red-hood cat's 2000/2000/1000 counters with red 90/117/86, preserving two holes for white support and the 20/3 lock releases.

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Start red 90, red 117 and red 86; leave two holes open for support and lock releases.
Use white 75 in the first support hole and blue 24 in the second only after one red opener begins returning.
Continue with red 75/95 and then red 110; keep red 120 queued while both small locks remain active.
Route the 20-lock release and then the 3-lock card before replacing either hole with another triple-digit red stack.
Alternate red 120 with white 50/75 as the 1000 lane nears zero; use pink 4/3 as recovery cards.
After the 1000 lane clears, continue the two 2000 lanes with dark 35/45 and separated red 80-120 waves.
When the field opens, clear the brown ledge, ears and blue eyes before committing the white face routes.
Route white 35/75 and cyan 8 through the muzzle, then use pink for the nose and dark for the eyelids.
Finish the remaining red hood and border after the facial holes return, then wait for the clear.

Colors in this level:

Red, White, Brown, Blue, Pink, Dark purple, Cyan

Opening red 110 and 120 into both spare holes leaves nowhere for a small lock release.
Treating the 1000 counter as the finish ignores the two 2000 lanes.

Board notes 5 details

Layout: A brown-white cat with blue eyes peers over a ledge beneath a red field marked OK. Left and bottom counters start near 2000, the right near 1000, and locks read 20 and 3; red 90/117/86 lead white 75/50, red 110/95/75/120, pink 4/3, blue 24 and dark 35-45.
Goal: Drain the three huge counters and both small locks, then clear the red hood, brown ears and ledge, blue eyes, white face, pink nose and dark outlines.
Opening: Start red 90, red 117 and red 86, leaving two holes empty for white support and lock releases.
Danger Zone: Repeated 75-120 stacks can consume every route during the long counter phase, blocking the tiny 20- or 3-lock card.
Mechanics: A seven-minute portrait combines 2000/2000/1000 counter lanes, two small locks and repeated triple-digit red stacks.

Why leave two holes open at the start?
One accepts white or blue support while the other stays available for the 20- and 3-lock releases.
When does the cat face become directly clearable?
Only after the long red-field counters fall and the hood layer opens.