Power of life

Water Crossing By Rope

The deep round lake is 200 meters in diameter. In the middle of the lake there is an island where a tree grows. There...

Funny idea to escape prisons

Two convicts are locked in a cell. There is an unbarred window high up in the cell. No matter if they stand on the bed,...
Samurai Warriors

Emperor’s bold decision

At the beginning of our era, the Japanese had a custom: when the military commander passed away, all his servants were buried alive along...

Passage problem

A car with a container set in the body drives the road that leads under the railway bridge. Just before the bridge the driver...

The Light Switches Riddle

There are three switches outside a closed room. There are three lamps inside the room. You can flip the switches as much as you...

Measuring Water puzzle

You had an infinite supply of water and a 3 and a 5 - liter bottles You would to measure exactly 4 liters of water. How...
One Yen

Inventive General

During a momentous battle, a Japanese general decided to attack even though his army was greatly outnumbered. He was confident they would win, but...

Resourceful postman

When the postman arrived at the Smith home to deliver mail through a slot in the front door, he was surprised to find the...

Damage in favor

An absolute failure lived in Las Vegas. He was always losing. Suddenly, he married a beautiful woman - millionaire. They started to visit casino...

The Importance of a Good Problem Statement

A metal rod stirred the liquid molten metal. However, at the same time it was collapsing and polluting the metal. The solution to the problem...
Creativity and Haha reaction

“AHA” and “HAHA” reactions (b)

1. How many apples can you eat if your stomach is empty? 2. How far can a dog run into the forest? 3. What do you...

The Relativity of Truth

“What is your age?” asked the judge. “Remember you’re under oath” “I am twenty one years and some months” the woman answered. Really she was an...