Brain Test 4 level guide
Brain Test 4 Level 309 Walkthrough
Brain Test 4 Level 309 taps the zero in 5 = 0 so it reveals a minus and a second five, producing 5 - 5 = 0.
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How to Solve Brain Test 4 Level 309 — Full Solution
- Ignore the blue-and-orange eraser and the lower 4 / 3 expression.
- Locate the right-hand zero in the large centered 5 = 0 equation.
- Tap the zero once.
- Watch the zero reveal a minus sign and a second five between the minus and equals sign.
- Confirm the final equation reads 5 - 5 = 0, then wait for the green check.
Colors in this level:
Black, White, Blue, Orange, Gray
Common Mistakes to Avoid
- Dragging or tapping the eraser because it looks like the tool for changing the equation.
- Trying to manipulate the lower 4 / 3 row instead of the zero in the main equation.
- Leaving immediately after the tap without waiting for the intermediate transformation and green check.
Quick Tips for Brain Test 4 Level 309 (quick clues)
- Target the zero on the right side of 5 = 0.
- Do not drag the blue/orange eraser.
- Wait for the displayed equation to settle as 5 - 5 = 0.
Board notes 5 details
- Layout
- The centered equation starts as 5 = 0, with a blue-and-orange eraser below-left and a separate 4 / 3 row underneath.
- Goal
- Tap the right-hand zero and wait for the equation to become the valid 5 - 5 = 0 expression.
- Opening
- Tap the black zero after the equals sign in the large centered equation.
- Danger Zone
- The eraser and 4 / 3 row are decoys; stopping at 5 = 0 or trying to edit the eraser does not trigger the success state.
- Mechanics
- The zero is a revealable object that changes into a minus sign and an additional five after one tap.
Frequently Asked Questions
What should I tap in Level 309?
Tap the zero on the right side of the large 5 = 0 equation.
Do I need the eraser or 4 / 3 row?
No. Both are decoys; the zero changes the equation by revealing the missing minus and five.
What is the correct final equation?
The board transforms to 5 - 5 = 0 and then shows the green check.