## FANDOM

2,497 Pages

Book Stacks is a puzzle in Professor Layton and the Last Specter.

## Puzzle

US Version

Someone left a ton of books on the table, and now these two librarians have the unpleasant task of shelving them all again. The librarians are trying to count all the books, but they're stacked so high that neither one can see them all.

Using each librarian's point of view, work out how many books are on the table.

UK Version

Someone left the library desk covered with books and left these poor librarians with the task of shelving them all again. The librarians are trying to count all the books, but they're stacked so high that neither one can see them all.

Using each librarian's point of view, work out how many books are on the table.

## Hints

Click a Tab to reveal the Hint.

US Version

Make a note of all the books you see using the Memo function. For example, take a look at how many books each librarian can see from her viewpoint.

That can help you determine how many books are in the center pile.

UK Version

Use the Memo Function to make a note of the number of books in each pile.

For example, you can work out how many books are in the centre pile using the girl's viewpoint.

US Version

Next, let's figure out how many books are in the lower-left corner of the table. Can you see which stack that is from the other librarian's perspective?

UK Version

You can work out how many books are in the bottom-left corner of the table using the boy's viewpoint.

US Version

You can also work out the number of books stacked in the top-right corner from the viewpoint of the librarian at the bottom of the screen.

That leaves only two piles of books to figure out!

UK Version

You can work out how many books are stacked in the top-right corner using the boy's viewpoint. If you've used the information in the previous two hints, there should only be two piles of books left.

US Version

The books in the top left corner can be counted using the top librarian's viewpoint. Don't forget that from her point of view, the stack is on the right.

You already know that the bottom-left corner contains only two books, so the three books that she sees must be in the top-left corner.

UK Version

The books in the top-left corner can be counted using the girl's viewpoint.

Bear in mind that from her point of view, that stack is on the right. You already know that the bottom-left corner contains only two books, so the three books that the girl can see on her right belong to the stack in the top-left corner.

## Solution

### Incorrect

US Version

Try looking at the problem from both angles, and figure out where each stack of books is.

UK Version

Try looking at the problem from every angle.

### Correct

Correct!

US Version

There are 16 books in total. Good eye!

UK Version

There are 16 books in total.

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

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