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The Lost Number is a puzzle in Professor Layton and the Unwound Future. The puzzle must be solved in order to progress the story.

Puzzle

US Version

Through the course of his research, Dad discovered a very important number and marked it on a slip of paper.

Unfortunately, somebody mistook the note for a piece of trash and tore it into pieces! Now Dad's hopping mad, and Mom's beside herself...

Perhaps you can figure out the number by piecing the note back together?

UK Version

"In the course of his research, Father discovered a very significant number and noted it on a slip of paper.

Unfortunately, somebody mistook this note for a piece of rubbish and tore it up into pieces! Now Father is hopping mad and Mother is beside herself...

Perhaps you can work out the number by piecing the note back together?"

Hints




Click a Tab to reveal the Hint.

Did you put the pieces back together carefully? If you do it right, the answer should reveal itself.

The number isn't written down. Did you notice there are some edges that fit together perfectly and some that don't?

If you line up all the edges that fit together, the gaps in the middle will reveal a number.

Did you notice the number that's formed by the gaps between the pieces? That's your answer. It's two digits.


Solution

Correct

That's it!

US Version

The number is 74! And don't tell anybody, but I actually tore up the note...

UK Version

"The number is 74!

And don't tell anybody, but the person who tore up the note? It was me..."

UF100S

A big thanks to http://professorlayton3walkthrough.blogspot.com