Why is the fifth tray crossed out on Level 651?

It stays locked for the entire level. Only four trays are usable, so every slot decision matters more than on a normal five-tray board.

Which colors survive after the headset clears?

Brown ears, white face, pink muzzle, cyan ear cups, purple hood, and dark outlines remain after the orange border and yellow headset are gone.

Food Hunt: Pixel Puzzle level guide

expert 9 colors

Read orange 18/32/12 across the opening queue and count only four usable trays, then start orange and yellow as the headset opens.

If the player asks you to sign in, open the video on YouTube instead.

Read orange 18/32/12 across the opening queue and count only four usable trays.
Early active checkpoints show orange 9, yellow 30, dark 34, then orange 23, yellow 30, and dark 7.
Start orange, then yellow as the headset and lower border expose those colors; wait through orange 9 and yellow 30 remainders.
The crossed marker is not early capacity.
Rotate brown, white, and pink through the ears, face, and muzzle as one warm-color tray releases.
Use cyan on the ear cups and purple on the hood, keeping a lane for recurring dark outlines.
Clear the final cyan, black, white, and pink facial fragments and confirm the empty frame.

Colors in this level:

Orange, Yellow, Brown, White, Pink, Cyan, Purple, Dark, Black

The crossed marker is not early capacity.
Counting the crossed tray as usable capacity.
Loading brown or cyan before orange and yellow lanes release, blocking the headset and lower border colors.

Read orange 18/32/12 first and never count the crossed fifth tray as capacity.
Early active checkpoints show orange 9, yellow 30, dark 34, then orange 23, yellow 30, and dark 7 as remainders.
Orange and yellow can occupy most of the four usable lanes while brown, dark, or white is needed to expose the face.

Board notes 5 details

Layout: A white-and-brown cow face wears a purple-and-yellow headset with cyan ear cups. Four trays start open beside a crossed position. The fresh front row is orange 18, orange 32, and orange 12; yellow groups sit immediately below, followed by dark, brown, white, cyan, and purple families.
Goal: Strip the orange lower border and yellow headset first, then clear the brown ears, white face, pink muzzle, cyan ear cups, purple hood, and dark outlines. Completion is the empty frame and cleared trays, followed by the Food Hunt celebration.
Opening: Start the exposed orange groups. Early active checkpoints show orange 9, yellow 30, dark 34, then orange 23, yellow 30, and dark 7. Admit yellow only as the headset pixels open, and retain room for dark outline batches.
Danger Zone: The crossed marker is not early capacity. Orange and yellow can occupy most of the four usable lanes while brown, dark, or white is needed to expose the face.
Mechanics: This extreme board begins with reduced tray capacity and repeated warm colors. Active values are remainders, not newly available nests.

Why is the fifth tray crossed out on Level 651?
It stays locked for the entire level. Only four trays are usable, so every slot decision matters more than on a normal five-tray board.
Which colors survive after the headset clears?
Brown ears, white face, pink muzzle, cyan ear cups, purple hood, and dark outlines remain after the orange border and yellow headset are gone.