How do you defuse the bomb in Brain Test 5 Level 8?

Use the blue water bottle on the shelf, not the scissors or wrench. Drag the bottle over the bomb and pour the water on it to stop the countdown. The wire-cutting tools are misdirections.

Which wire do you cut in Brain Test 5 Level 8?

You do not cut any wire. The scissors are a trap. The correct solution is to pour water from the blue bottle onto the bomb to neutralize it.

Brain Test 5 level guide

Brain Test 5 Level 8 Walkthrough

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Brain Test 5 Level 8 defuses the ticking bomb not with the scissors or wrench but by dousing it with the blue water bottle — the conventional bomb-disposal tools on the shelf are deliberate misdirection.

Board Notes

Layout: Level 8 opens at a wooden workbench. A shelf above holds scissors or wire cutters, a wrench, a blue water bottle, and an instruction manual. On the bench sits a red duffel bomb with a digital countdown timer and colored wires extending from it. The prompt reads "Defuse the bomb!"
Goal: The bomb timer counts down from 100. The correct action is to pour the blue water bottle onto the bomb to stop the countdown. The scissors and wrench look like the right tools for a bomb with wires, but they are deliberate traps.
Opening: Take the blue water bottle from the shelf and drag it onto the bomb. Tilt or pour the bottle to release the water onto the bomb and its wiring. The water stops the countdown timer and ends the level.
Danger Zone: The scissors are the most tempting prop because bombs in movies are always about cutting wires. In Brain Test 5, touching the scissors or attempting to cut any wire triggers a wrong-answer state. The wrench is equally useless. Go straight for the water bottle.
Mechanics: Level 8 is a single-part expectation-reversal puzzle. Unlike all previous levels which run two or three parts, this level has only one scenario. The entire challenge is recognizing that the obvious tool (scissors for wires) is wrong, and the water bottle is the answer.

Quick Tips for Brain Test 5 Level 8 (spoiler-free)

Resist the scissors. In Brain Test 5, the most obvious-looking tool for a puzzle is almost always a trap.
Grab the blue water bottle from the shelf and pour it directly onto the bomb. The water is the defusal method.
If you already attempted the scissors and got an error, tap away to reset and then go straight for the water bottle.

How to Solve Brain Test 5 Level 8 — Full Solution

Look at the shelf above the workbench. It has scissors, a wrench, a blue water bottle, and a manual. Do not touch the scissors or wrench.
Take the blue water bottle from the shelf.
Drag the blue bottle over the red bomb bag on the bench.
Tilt or pour the bottle to release the water onto the bomb and its timer wiring.
The water stops the countdown. The bomb is defused and the level ends.

Common Mistakes to Avoid

Reaching for the scissors or wire cutters first — they are the primary decoy and trigger a wrong state.
Using the wrench on the bomb — it has no effect and wastes time while the timer counts down.

Frequently Asked Questions

How do you defuse the bomb in Brain Test 5 Level 8?
Use the blue water bottle on the shelf, not the scissors or wrench. Drag the bottle over the bomb and pour the water on it to stop the countdown. The wire-cutting tools are misdirections.
Which wire do you cut in Brain Test 5 Level 8?
You do not cut any wire. The scissors are a trap. The correct solution is to pour water from the blue bottle onto the bomb to neutralize it.