Brain Test 4 Level 337
Open the door Answer
Drag the key into the keyhole. Then, swipe the screen down and tap on the blocker which is on top of the door.
Follow the screen sequence
Use the images as a compact replay of the solving path. The text below each frame explains what should change.
Video walkthrough
Same number in other versions
Brain Test versions can reuse the same level number with a different puzzle. If the screenshot or question does not match your game, switch to the same number in another version or use the nearby level links.
Strategy guide
- 1.First drag the key into the keyhole to unlock the door;
- 2.After unlocking, swipe the screen downward to expose the hidden blocker;
- 3.Finally tap the blocker that appears above the door to open it.
Common mistakes
- 1.Tapping the key directly without dragging it to the keyhole first;
- 2.Swiping the screen before placing the key in the keyhole;
- 3.Trying to tap the blocker without swiping down to reveal it.
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