What unlocks first in Block Out Level 575?

Reduce the smaller purple 3 layer to zero, then continue purple clears to open purple 4.

Why do the large hooks get stuck?

They need the upper center and both notched side routes before long green and red bars occupy them.

A framed green horizontal bar leaves through the top green gate, followed by the small solid green L from the lower-left corner.

Block Out level guide

hard 7 colors

Level 575 opens lower purple 3 and upper purple 4, clears cyan/red hooks before the green field, and finishes two green pieces through the top gate.

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Route the accessible cyan outlined L leftward and move green hooks away from the red horizontal bars.
Send red bars toward the right gate and clear small yellow and purple corner blocks.
Reduce the lower purple chamber from 3 to zero, then continue purple exits until purple 4 opens.
Move the large cyan and red outlined hooks, then clear the cyan framed L and long cyan blocks before green fills center.
Send the red outlined bar through the left red gate, clear the last red block, and remove the tall purple piece through the right purple gate.
Reduce the right counter while clearing the framed green L and long green bars, keeping the top green gate open.
Remove the final framed green horizontal bar through the top green gate.
Finish with the small solid green L from the lower-left corner through that same top gate.

Colors in this level:

Purple, Cyan, Green, Red, Yellow, Blue, Orange

Bridging a side notch with a long bar before the outlined hooks turn.
Filling upper center with green before cyan/red leave, or forgetting that two green pieces remain after the right counter clears.

Board notes 5 details

Layout: Purple 4 caps a smaller purple-patterned chamber marked 3; a separate orange counter marked 3 sits at right above cyan/green hooks, long red bars, purple columns, and yellow groups.
Goal: Open both purple layers, clear cyan/red hooks before green fills center, and reserve the top green gate for the last framed bar and small L.
Opening: Remove the accessible cyan L leftward, separate green hooks from red bars, and clear small yellow and purple corner pieces.
Danger Zone: A long red or green bar spanning a side notch removes the turning bay needed by outlined cyan and red hooks.
Mechanics: A lower purple 3 chamber and upper purple 4 Color Shutter combine with a separate right-side counter marked 3.

What unlocks first in Block Out Level 575?
Reduce the smaller purple 3 layer to zero, then continue purple clears to open purple 4.
Why do the large hooks get stuck?
They need the upper center and both notched side routes before long green and red bars occupy them.
What are the final pieces in Level 575?
A framed green horizontal bar leaves through the top green gate, followed by the small solid green L from the lower-left corner.