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The Gear Switch is a puzzle in Professor Layton and the Diabolical Box.

Puzzle

US Version

The button that opens the door in front of you is buried deep within this machine, so you can't push it directly. However, by pulling the knob at the top to the left or right, you can move the various gears and plates in the machine, allowing you to press the button at the bottom.

In order to hit the OPEN button, should you pull the knob toward A or B?

UK Version

The button that opens the door in front of you is buried deep within this machine, so you can't push it directly. However, by pulling the lever at the top to the left or right, you can move the various gears and plates in the machine, allowing you to press the button at the bottom.

In order to push the green button, should you pull the lever towards A or B?

Hints




Click a Tab to reveal the Hint.

When one gear rotates with another, the two gears must rotate in opposite directions.

US Version

Use the Memo function to keep track of the direction of each gear's rotation.

UK Version

Use the Memo Function to keep track of the direction of each gear's rotation.

US Version

The gear at the very bottom has to rotate clockwise to hit the switch, so the board of teeth directly above it will need to move to the right. Make sense? Now continue that line of thought as you move up toward the knob.

UK Version

The gear at the very bottom has to rotate clockwise to hit the switch, so the board of teeth directly above it will need to move to the right. Make sense? Now continue that line of thought as you move up towards the lever.

The board of teeth underneath the three gears at the top needs to move to the left. Therefore, the gear directly above it needs to rotate clockwise.

US Version

Keep going until you reach the knob at the top!

UK Version

Keep going until you reach the level at the top!


Solution

Incorrect

Too bad!

There are only two ways to answer this question, so the answer must be the option you didn't pick.

Before you answer, though, think the puzzle through so you can understand the solution.

Correct

Nicely done!

US Version

Moving the knob toward B will spin the gears in a way that causes the bottom lever to hit the OPEN button.

Since there are only two possible answer for this puzzle, you could have just guessed, but we're sure you thought the problem out before answering, right?

UK Version

Moving the lever towards B will spin the gears in a way that causes the bottom lever to hit the green button.

Since there are only two possible answers for this puzzle, you could have just guessed, but hopefully you were able to work it out properly!

DB079S

A big thanks to http://professorlayton2walkthrough.blogspot.com

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