Which cover opens first in Block Out Level 741?

Open the blue 5-cover first; the first newly revealed move is the red vertical down through the bottom red gate.

How do I avoid the late deadlock?

Keep the central two-column waist empty when the purple 14-cover is one trigger from zero.

Block Out level guide

expert 7 colors

Level 741 opens a blue 5-cover before a much larger purple 14-cover; preserve the narrow waist so both reveal waves can reach their gates.

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Shift the lower purple L left, clear red pieces through the bottom red gate, and move the small blue square toward the left blue gate.
Send accessible blue blocks through the left blue gate until the blue cover reaches 1, keeping the long yellow vertical below the covers.
At blue-cover count 1, send the outlined pink L with the yellow inset through the left cyan gate; when the cover opens, send the newly revealed red vertical down through the bottom red gate before the green block and framed yellow vertical.
Route revealed green pieces left, blue/cyan pieces to side gates, and yellow shapes to yellow gates while the pink L waits below the waist.
Send the red vertical down, cyan pieces through cyan gates, and green pieces left until the purple cover reaches 1, leaving the right-side entry row empty.
Drop the outlined pink-and-yellow L through the bottom red gate for purple 1 to 0, then move the revealed red-blue L and green-red L before the purple columns cross center.
Clear cyan pieces right, pink bars right, yellow pieces upward, and green pieces left.
Finish the lower purple blocks and lift the final purple L through the top purple gate before the PERFECT card.

Colors in this level:

Blue, Cyan, Green, Red, Pink, Yellow, Purple

Parking the long yellow vertical in the waist before the blue cover opens.
Moving a purple column across center while the red/green L reveal is still packed.

Use the waist only for transit; empty it before either cover reaches zero.
Pull the red/green L pair away from the upper-right reveal before moving long purple columns.

Board notes 5 details

Layout: Blue and purple covers fill the upper board at counts 5 and 14. The exposed stepped pocket holds pink/yellow L shapes, blue squares, red pieces, yellow bars, and purple blocks around bottom and side gates.
Goal: Open the blue chamber first, drain its new blocks through the waist, then reduce the purple cover and clear the full right-side reveal.
Opening: Move the lower purple L away from the red gate, clear the exposed red pieces downward, and route small blue blocks left without parking the long yellow vertical in center.
Danger Zone: A long yellow, pink, or purple piece across the two-column waist traps the blue-cover contents and blocks the later red/green L reveal.
Mechanics: Two covers at 5 and 14 reveal separate waves that must share one central transfer lane.

Which cover opens first in Block Out Level 741?
Open the blue 5-cover first; the first newly revealed move is the red vertical down through the bottom red gate.
How do I avoid the late deadlock?
Keep the central two-column waist empty when the purple 14-cover is one trigger from zero.