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The Cracked Clock is a puzzle in Professor Layton and the Last Specter.

Puzzle

While taking a clock down from the wall, you drop it on the floor, cracking its face in half.

Curiously enough, you find that the sum of the numbers on each side is equal.

Draw the line that shows exactly where the clock face is split in half.

Hints




Click a Tab to reveal the Hint.

US Version

There's no secret tip that will crack this calculation.

Start by making a good guess where the line falls, then add up the numbers in the two halves.

UK Version

There's no hidden trick to this puzzle - it's pure calculation.

First, make an educated guess at where the line falls, then add up the numbers in the two halves.

US Version

Consider this! The sum of all the numbers around the whole circle is 78.

So if the sum on each half of the clock is equal, what is half of 78?

UK Version

Consider this: the sum of all the numbers around the whole clock is 78.

If the sum on each half of the clock is equal, what is that number?

US Version

If the sum of all the numbers is 78, then the total of each half is 39.

Make a rough guess where that dividing line might be, then add up each half.

Adjust the line based on how far away each half is from 39.

UK Version

If the sum of all the numbers is 78, then the total of each equal half is 39.

Make a rough guess where that dividing line might be, then add up each half. Adjust the line based on how far each total is from 39.

US Version

It all comes down to math once you know the secret that each half must add up to 39.

Keep making a good guess where the crack might be until each half hits that number!

UK Version

You know that each half must add up to 39. Now it just comes down to arithmetic - there's no way round it.

If you can't get the answer by guessing, you'll just have to work through all the combinations until you find one where the numbers on each half of the clock add up to 39.


Solution

Incorrect

US Version

Too bad!

Try again. It's a matter of careful calculation...

UK Version

Too bad.

Try again. It's a matter of careful calculation...

Correct

Precisely!

The clock face split in a line between 9 and 10 on the left and 3 and 4 on the right.

LS023S

A big thanks to http://professorlayton4walkthrough.blogspot.com

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