Brain Test Level 550: He wants a full glass.
Brain Test Level 550
Screenshots

Quick Answer
Drag the valve handle from the table to the pipe to start the water flow, then drag one of the glasses under the water to fill it, and finally give the full glass to the boy.
Skills Tested
Step-by-Step Solution
- 1) See the boy waiting for a full glass.
- 2) Drag the valve handle from the table to the pipe.
- 3) Start the water flow from the pipe.
- 4) Fill a glass under the water and give it to the boy.
Hint
Reveal a hint
Turn on the pipe with the valve so the water can fill a glass.
Why It Works
No water flows until the pipe valve is turned on with the handle. Once open, placing a glass under the water fills it up for the boy. The trick is completing the whole chain from the valve to the glass.
Frequently asked questions
How do I fill the glass in Brain Test level 550?
Drag the valve handle onto the pipe, fill a glass under the water, and give it to the boy.
What is the answer to Brain Test level 550?
Use the valve handle to start the water, fill a glass, and hand the full glass to the boy.
What does the valve handle do in Brain Test level 550?
The handle turns on the pipe so water can flow and fill the glass underneath.
What is the trick in Brain Test level 550?
The trick is turning the pipe on with the valve handle and then filling the glass with the water.
What should I give to the boy in Brain Test level 550?
Give the boy the full glass once you have filled it with water from the pipe.
Is there a video walkthrough for Brain Test level 550?
Yes, the embedded video shows the valve being used to start the water and fill the glass.