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Shelve the Books (A Tidy Bookshelf in the UK version) is a puzzle in Professor Layton and the Unwound Future.

Puzzle

US Version

Arrange the five books below into the green bookshelf following these rules:

  • No books can go left of the brown book.
  • Only the blue book can touch the brown book.
  • The yellow book goes to the left of the white book.
  • The blue book must touch the purple book.
  • The white book needs to be sandwiched between the yellow and purple books and not touch any others.
  • An empty space big enough for one book must be left next to the yellow book.
UK Version

Arrange these books of equal thickness on the shelf according to the rules below:

  • There are no books to the left of the brown one.
  • Only the blue book touches the brown one.
  • The yellow book is to the left of the white one.
  • The blue book touches the purple one.
  • The white book is sandwiched between the yellow and purple books, but touches no other.
  • There's an empty space for one book next to the yellow one.

Hints




Click a Tab to reveal the Hint.

US Version

"No books can go left of the brown book." So this means it must touch the far-left side.

UK Version

If there are no books to the left of the brown one, the chances are it goes on the far left of the shelf.

US Version

The third and fifth rules tell you how to arrange the yellow, white, and purple books. From left to right, put them in exactly that order.

UK Version

The third and fifth clues reveal how to line up the yellow, white and purple books. From left to right, put them in the following order: yellow, white, then purple.

US Version

The second and fourth rules should give you a good idea about where to place the blue book. However, if all of the books are placed vertically, you'll never solve this puzzle.

If you keep this in mind, you'll find there's only one place you can put the blue book...

UK Version

From the second and fourth clues, you should be able to deduce where the blue book goes.

However, if you're trying to stand all the books vertically, it will be impossible to meet all the conditions. Take away this constraint and there's only one place you can put the blue book...

US Version

Following the rules and put all of the books into the bookcases except for the blue one. Now see that space along to top? Turn the blue book sideways, and it will fit right in!

UK Version

If standing all the books upright doesn't work, try putting one in sideways.

When you put all except the blue book in, can you see a space at the top? That's where the blue book goes.


Solution

Incorrect

Too bad!

US Version

As long as the conditions are met, it doesn't matter how you arrange the books.

UK Version

Remember, it doesn't matter how tidily the books are arranged as long as you meet all the conditions.

Correct

US Version

Book smart!

Placing the blue book sideways at the top is the key.

UK Version

That's right!

Placing the blue book horizontally on top of the others makes it work.

UF083S

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

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