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Crawling the Web is a puzzle in Professor Layton and the Last Specter.

Puzzle

US Version

A spider made a very intricate web.

When its prey gets stuck at A, the spider starts from the center and take thread 2 or 5 to get it. To get to the prey at B, the spider uses thread 1 or 2, starting from the center.

The spider has a simple rule. Following this rule and starting from the center, which two threads could the spider take to get to C?

UK Version

A spider made a particularly intricate web.

When its prey gets stuck at A, the spider starts from thread 2 or 5 to get it. To get to prey at B, the spider uses thread 1 or 2.

The spider uses a simple rule, so which two threads could the spider start from to get to C?

Hints




Click a Tab to reveal the Hint.

US Version

Spiderwebs consist of radial support threads and sticky spiral threads to catch prey. Normally, spiders only travel along the nonsticky radials, but this spider is particularly unusual!

UK Version

This type of spiderweb consists of radial support threads and sticky spiral threads that catch prey.

Normally, the spider would only travel along the non-sticky radials, but this spider is particularly unusual!

US Version

Find the path the spider takes to A when starting at thread 2 or 5. Maybe you will stumble on the rules the spider uses if you try out some different routes.

UK Version

Find the path the spider takes to A when starting at thread 2 or 5. Maybe you will stumble on the rules the spider uses if you try different routes.

US Version

This spider always heads away from the center of its web, but when it meets a junction it turns. The spider will never ignore a junction while on its way to its prey.

UK Version

This spider always heads away from the centre of its web, but when it meets a junction, it turns.
The spider will never ignore a junction on its way to its prey.

US Version

Try thinking about the prey instead of starting thread. The spider can get to C from either the left or right depending on which thread it starts from. Try tracing both routes backward to the start.

UK Version

Try thinking about the prey instead of a starting thread. The spider can get to C from either the left or right depending on which thread it starts from. So, try tracing both routes backwards to the start.


Solution

Incorrect

US Version

Too bad!

The spider can start from two separate threads.

UK Version

Bad luck!

The spider can start from two separate threads.

Correct

US Version

Prey-fect!

From wherever the spider starts, it always travels outward and turns whenever it meets another connecting threads.

Oh, goody! It's lunchtime!

UK Version

Precisely!

From wherever the spider starts, it always travels outwards and turns whenever it meets another connecting thread.

Oh, goody! It's lunch time!

LS048S

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

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