What is the main constraint on this SUPER HARD board?

The red 30 gate and two key lanes need a spare hole; the long 35–46 stacks must be staggered so cyan can return before the next lock opens.

What remains after the hive is mostly clear?

The red edge, cyan 42 route, white cloud pieces, dark outline and tiny yellow/red pixels still need to be drained.

Colony Flow! level guide

hard 7 colors

Survive the red 30 gate and two key releases while peeling the orange hive and three bees into the final cyan, red and white fragments.

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Launch yellow 35, white 8 and green 23 to open the first routes around the red 30 gate.
Reuse the returning holes for cyan 27/29/36 and red 20, keeping one hole free for the first blue key release.
Route yellow 40 and white 35 after the initial cyan ants clear the lower edge; do not start dark 40 beside red 20.
Use cyan 40/46 and brown 35 to peel the bees from the right side while the gate drops through its middle phase.
When green 4, cyan 40 and the dark key lane are exposed, clear green 4 before taking another long yellow card.
Continue with dark 26/17, white 5 and cyan 42/40 as the sky and cloud separate from the orange hive.
Near the late red-gate phase, use green 5/10, white 5 and cyan 11 while preserving one empty hole for the final lock.
Clear red 28/26, dark 25 and yellow 39/40, then wait for the final cyan and white ants to finish the board.

Colors in this level:

Yellow, White, Green, Red, Cyan, Brown, Dark purple

Taking red 20, yellow 40 and dark 40 together consumes the holes needed by the first key release.
Ignoring the cyan 40/46 return leaves the bee fragments and the late red edge competing for the same route.

Board notes 5 details

Layout: A large orange hive or fruit-like figure sits under a branch on a cyan sky background, with three small bees and a red 30 gate near the upper center. The queue begins with yellow 35, white 8, green 23, yellow 40, red 20, white 35 and dark 40; later rows expose cyan 46/40, brown 35 and key-locked cards.
Goal: Clear the sky, cloud, orange hive and three bees, then unlock and remove the remaining red edge, cyan 42, white and dark fragments around the gate.
Opening: Use yellow 35, white 8 and green 23 to open the first routes around the red 30 gate, then take cyan 27/29/36 and red 20 while preserving one lane for the first key.
Danger Zone: Red 20, yellow 40 and dark 40 can fill all five holes before the cyan bee route opens. Leave a spare lane and wait for cyan 40/46 to return before the next long card.
Mechanics: A SUPER HARD multi-color cascade with a red gate and key releases that changes a complete hive-and-bee scene into an upper cyan strip, orange/red fragments and a small end cluster.

What is the main constraint on this SUPER HARD board?
The red 30 gate and two key lanes need a spare hole; the long 35–46 stacks must be staggered so cyan can return before the next lock opens.
What remains after the hive is mostly clear?
The red edge, cyan 42 route, white cloud pieces, dark outline and tiny yellow/red pixels still need to be drained.