Brain Test 4 level guide
Brain Test 4 Level 210 Walkthrough
Brain Test 4 Level 210 switches on the three controllable bulbs, then removes the unlit far-right bulb so every bulb left in the rig is glowing.
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How to Solve Brain Test 4 Level 210 — Full Solution
- Tap the left green button to light the leftmost bulb red.
- Tap the middle green button to light the second bulb.
- Tap the right green button to light the third bulb.
- Press and hold the only pale bulb at far right, then drag it down and away from its buttonless socket.
- Release the removed bulb and wait for the green check with all three remaining bulbs lit.
Colors in this level:
White, Gray, Green, Red, Black, Brown
Common Mistakes to Avoid
- Looking for a hidden fourth control even though the box contains only three green buttons.
- Stopping after lighting the first three bulbs while the pale fourth bulb is still installed.
- Removing one of the red bulbs instead of the unlit bulb at the far-right end.
Quick Tips for Brain Test 4 Level 210 (quick clues)
- Use each of the three green buttons once.
- The far-right bulb is the only one without a matching control.
- Pull that pale bulb out after the first three glow red.
Board notes 5 details
- Layout
- Four pale bulbs sit above three green controls; the first three are wired to those buttons, the far-right bulb has no fourth control, and Doctor Worry stands beside a red chair.
- Goal
- Light the three wired bulbs and pull out the buttonless fourth bulb, leaving only illuminated bulbs in the apparatus.
- Opening
- Tap the left, middle, and right green buttons so the first three bulbs turn red.
- Danger Zone
- The far-right bulb cannot be switched on because no fourth button exists, so leaving it installed prevents completion.
- Mechanics
- The puzzle changes the meaning of all: removing the uncontrollable bulb makes all remaining bulbs lit.
Frequently Asked Questions
How do I turn on the fourth bulb in Level 210?
You do not. Pull the unlit far-right bulb out after lighting the first three.
Which bulb should I remove?
Remove the pale bulb at the far-right end, the one without a matching green control.
What order should I use the switches?
Tap the left, middle, and right green buttons, then remove the fourth bulb.