Why must the fifth hole stay empty?

It gives green key releases and the synchronized 226-gate cards immediate space while four opening routes are still active.

What makes Level 395 a hard level?

Three uneven gates, locked cards and repeated long pink and dark stacks create overlapping release windows.

Colony Flow! level guide

hard 9 colors

Protect a fifth-hole lock buffer while three uneven gates, long pink and dark stacks, and the fox painter's small brush-color fragments turn over.

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Launch red 35 and pink 42, then add dark green 10 and green 14 into separate holes.
Preserve the fifth hole for the first lock release; start dark 56 only after green 10 or 14 returns.
Alternate red 38/40 with pink 42/50 while the left 400 gate drops through the 300s.
Use green 14/30 and white 25/40 to expose the scarf and muzzle before committing dark 55.
Clear each unlocked card immediately as the twin 226 gates remain near 180; do not bury a key route behind pink 50.
Route dark 55 and pink 40 separately while the 400 gate approaches zero and the lower gates begin falling again.
Mix short red 8/20/39, green 5/14 and white 15/30 as the fox separates from the background.
When both lower gates reach double digits, hold one hole for their paired release and clear the pink fragments first.
Remove the dark outline, white face and brush handles with dark 25/55, white 25/40 and red 29/35.
Finish the last pink border and tiny red, green and cyan brush tips, then wait for all five holes to clear.

Colors in this level:

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

Using all five holes before a key release can strand the newly unlocked card and stall the queue.
Starting dark 55/56 beside a long pink 50 holds too much capacity during a gate transition.

Board notes 5 details

Layout: A red fox painter with a white face and green scarf holds colored brushes against a pink field. A brown gate reads 400 at left and two pink-framed gates each read 226 below. Five holes face red 35, pink 42, dark green 10 and green 14; deeper cards include red 38/40, pink 25/40/42, dark 55/56, white 25/40 and locks.
Goal: Drain the 400 and twin 226 gates, strip the pink field, then clear the red fox, white face, green scarf, colored brushes and dark outline.
Opening: Tap red 35, pink 42, dark green 10 and green 14, preserving the fifth hole until the first locked card opens.
Danger Zone: Long pink 40/50 and dark 55/56 routes can block green key releases while the three gates fall at different speeds.
Mechanics: A HARD LEVEL combines one 400 gate, synchronized 226 gates and key-locked cards before the portrait breaks into small brush-color fragments.

Why must the fifth hole stay empty?
It gives green key releases and the synchronized 226-gate cards immediate space while four opening routes are still active.
What makes Level 395 a hard level?
Three uneven gates, locked cards and repeated long pink and dark stacks create overlapping release windows.