What does Reverse mean in Level 13?

Select the squares without a traffic light rather than the squares containing one.

Do the selected coordinates stay the same after a refresh?

No. Each replacement is a new 4-by-4 image and must be inspected independently.

Press Verify only after every safe tile in the current image sequence has been selected and no signal-containing tile is marked.

I'm Not a Robot level guide

hard 6 colors

Select every current 4-by-4 tile without any traffic-light pixels, rescanning after each image refresh, then verify.

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

Read `Select all the squares without a Traffic Light` and inspect the initial yellow-signal photo.
Select the clear left-side, right-side, and bottom-row cells shown in the first visible wave; leave every signal-containing cell clear.
When the photo refreshes, rescan the new street-camera 4-by-4 grid from scratch.
Repeat the same rule on each replacement, including the later blue-sky photo with the signal in the lower-right.
When all current safe cells are checked, click Verify; the source's creator overlay begins before a clean post-click success result.

Colors in this level:

Blue, Yellow, Red, Green, White, Black

Selecting a tile containing a small lamp, yellow housing, pole, or sign fragment.
Reusing a safe coordinate from the previous photo after the image refreshes.
Treating blue sky alone as proof that a tile is safe.

Inspect each tile for even a small piece of a lamp, pole, or sign.
After a refresh, discard the previous image map and start the scan again.
The final visible sampled state includes checks at r1c1, r1c2, r1c3, r3c1, r3c2, r4c1, and r4c2.

Board notes 5 details

Layout: The level uses a 4-by-4 photo grid; the first image shows a yellow traffic signal, pole, and ONE WAY sign against blue sky.
Goal: Select only tiles that contain no part of the traffic-light assembly, pole, or sign.
Opening: The walkthrough first selects unobstructed edge and bottom-row cells, then repeats the scan after the grid refreshes to new traffic-light photos.
Danger Zone: The signal, lamps, pole, and sign cross grid boundaries, and old coordinates stop being meaningful when a replacement image appears.
Mechanics: This reverse image challenge refreshes the photo as correct cells are selected, requiring a new 4-by-4 inspection after every replacement.

What does Reverse mean in Level 13?
Select the squares without a traffic light rather than the squares containing one.
Do the selected coordinates stay the same after a refresh?
No. Each replacement is a new 4-by-4 image and must be inspected independently.
When should I press Verify?
Press Verify only after every safe tile in the current image sequence has been selected and no signal-containing tile is marked.