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Brain Puzzle 3 Level 21 Answer: Help the wife catch cheating

Unofficial fan-made guide. Not affiliated with the developer of Brain Puzzle 3.
Steps cross-checked against an independent all-levels reference (current game version) and the embedded walkthrough video. Brain Puzzle 3 moves are drags as often as taps. If a tap does nothing, try dragging the object instead.
Quick answer

Level 21 “Cheating Scene”: Help the wife catch cheating. 12 moves in order, most of them drags. Follow the step cards below or copy the embedded video move-for-move.

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Brain Puzzle 3 level 21 Cheating Scene scene

Watch the full solution.

The clip is worth it for the two unlocks, the bag by the door and the cabinet swipe, because the lipstick and the pen do not exist until each one is open.

Level 21 walkthrough: every move in order.

Step 1 Steps 1–3: Drag the key on the floor to the door

Drag the key on the floor to the door; then Drag the photo frame on the cabinet in the room to the door; then Click on the bag in the room

Step 2 Steps 4–6: Drag the lipstick from the bag to the wife outside the door

Drag the lipstick from the bag to the wife outside the door; then Drag the socks on the sofa to the door; then Drag the flame on the wife's head to the door

Step 3 Steps 7–9: Swipe right on the cabinet door

Swipe right on the cabinet door; then Drag the pen from the cabinet to the poster on the wall; then Drag the poster to the door

Step 4 Steps 10–12: Drag the purple bow on the mistress's head to the dog at the door

Drag the purple bow on the mistress's head to the dog at the door; then Drag the beautiful dog to the door; then Drag the crying child to the wife outside the door

What makes Level 21 tricky.

Three destinations share these twelve moves, and the door takes six of them. The key on the floor, the photo frame on the cabinet, the socks on the sofa, the flame off the wife's head, the poster and the dog all end at the door, which is where the evidence pile builds. The lipstick and the crying child go to the wife outside instead, and the purple bow goes to the dog. Every item belongs to exactly one of those three, which is how a run can be nine moves deep and still wrong about where the tenth has to go.

Two moves are tools rather than evidence. The bag at step 3 is a click, and the lipstick at step 4 does not exist until it is open; the cabinet door at step 7 is a right swipe, and the pen at step 8 is the same kind of unlock. The pen then goes to the poster on the wall instead of to the door, and the poster goes to the door one step later, so a run hunting for the next thing to add to the pile will skip the wall entirely.

The oddest drag in the level is the flame on the wife's head at step 6. It is a state rather than an object, it sits on the person you are helping, and it still has to be carried to the door like everything else. The cabinet is the second thing to watch: the same furniture gives up a photo frame at step 2 to a plain drag and only opens its door at step 7 to a swipe, so an early visit teaches the wrong gesture. The order below is the only thing separating those two.

Three destinations, not one.

Six moves end at the door, but the other six do not, and they are the ones that stall a run:

The last move is a drag onto the wife, so a run that has finished the pile at the door can still be one input short.

FAQ.

What is the answer to Brain Puzzle 3 Level 21?

In order: 1) Drag the key on the floor to the door; 2) Drag the photo frame on the cabinet in the room to the door; 3) Click on the bag in the room; 4) Drag the lipstick from the bag to the wife outside the door; 5) Drag the socks on the sofa to the door; 6) Drag the flame on the wife's head to the door; 7) Swipe right on the cabinet door; 8) Drag the pen from the cabinet to the poster on the wall; 9) Drag the poster to the door; 10) Drag the purple bow on the mistress's head to the dog at the door; 11) Drag the beautiful dog to the door; 12) Drag the crying child to the wife outside the door

Why does nothing happen when I tap in Level 21?

Ten of the twelve moves are drags, and the only exceptions are the click on the bag and the right swipe on the cabinet door, both of which unlock a later item.

Is this Level 21 walkthrough up to date?

It matches the current build, where the bag and the cabinet both have to be opened before the lipstick and the pen exist.

Stuck on another level?.

More Brain Puzzle 3 answers as we clear them:

Level 1Level 2Level 3Level 4Level 5Level 6Level 7Level 8Level 9Level 10Level 19Level 11Level 12Level 13Level 14Level 15Level 16Level 17Level 18Level 20Level 22Level 23Level 24Level 25Level 26Level 27Level 28Level 29Level 30Level 31Level 32Level 33Level 34Level 35Level 36Level 37Level 38Level 39Level 40Level 41Level 42Level 43Level 44Level 45Level 46Level 47Level 48Level 49Level 50Level 51Level 52Level 53Level 137

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