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Pierre the Maze Detective in the Last Giant Maze

Section: Casual Puzzles Category: Maze

Difficulty: Medium Tags: Featured

Help Pierre catch the evil Mr X before he manages to escape from this giant maze. On your way to him, look out for these hidden items:

5 hidden stars
5 green treasure chests
5 red trophies
Mr. X’s sidekick (wearing a striped blue shirt)
5 elephants
1 lion
1 shark
1 ghost
a stolen statue’s head
10 gold weathercocks

Text and illustrations © 2015 IC4DESIGN.
Excerpt from *Pierre the Maze Detective: The Search for the Stolen Maze Stone*,
published in 2015 by Laurence King Publishing Ltd., London.

SOLUTION

The solution is shown below.

Hiro Kamigaki July 1, 2018

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Trolls and Cakes

Section: Brain Teasers Category: Deduction

Difficulty: Medium

You are on your way to visit your Grandma, who lives at the end of the valley. It’s her birthday, and you want to give her the cakes you’ve made.

Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make-believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.

How many cakes do you have to leave home with to make sure that you arrive at Grandma’s with exactly 2 cakes?

SOLUTION

You leave with 2 cakes. Every time you cross a bridge, you give one of them to a troll, and then get it back. Eventually, you will arrive at your grandma with exactly 2 cakes.

Unknown Author June 27, 2018

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The Candy Shop

Section: Brain Teasers Category: Deduction

Difficulty: Medium

A candy shop lets children exchange 3 chocolate wrappers for a brand new chocolate. Willy is walking around town collecting chocolate wrappers from people. How many wrappers must he collect in order to eat 10 chocolates?

SOLUTION

He needs only 21 wrappers. He uses them to get 7 chocolates. After he eats them, he is left with 7 wrappers, which uses to get 2 more chocolates. After he eats these, he is left with 3 wrappers, which are enough to get one more chocolate and make them 10 in total.

Unknown Author June 18, 2018

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Professor Al’s Books

Section: Brain Teasers Category: Insight

Difficulty: Medium

Professor Al has put the “Lord of the Rings” trilogy books on his shelf in order, next to each other. The books are hard copies, with pages which are 1/100in thick and covers which are 1/8in thick. A worm is eating its way from the first page of the first volume to the last page of the third volume. If each of the volumes contains 400 pages, how long this distance is?

SOLUTION

The first page of the first volume and the last page of the third volume are separated only by the second volume and the extra 2 book covers. Therefore the distance is 4in + 0.5in = 4.5 inches long.

Unknown Author June 17, 2018

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King Octopus and His Servants

Section: Brain Teasers Category: Deduction

Difficulty: Medium

King Octopus has servants with 6, 7, or 8 legs. The servants with 7 legs always lie, and the servants with 6 or 8 legs always tell the truth. One day four of the king’s servants had the following conversation:

“We together have 28 legs,” said the first octopus.
“We together have 27 legs,” said the second octopus.
“We together have 26 legs,” said the third octopus.
“We together have 25 legs,” said the fourth octopus.

Which of the four servants told the truth?

SOLUTION

If all four octopuses lied, then their total number of legs must be 28, which is impossible. Therefore exactly one of them said the truth, and the other three had 7 legs each. Since the truthful octopus must have 6 or 8 legs, and 21 + 8 = 29, we see that it has exactly 6 legs, and therefore it is the second one.

Unknown Author June 5, 2018

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