Fewest Queens For Full Attack

What is the smallest number of queens required on a chess board to attack all squares?

5. To see where they need to be placed, check out the diagram on Wolfram’s Queens Problem page.

Posted in Brain Teasers

Twice in Eternity

I occur twice in eternity,
And I’m always within sight.

What am I?

The letter ‘t’.

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Bird Flying Over the Ocean

When a bird flies over the ocean a part of the body touches the water but doesn’t get wet. What part is it?

The shadow

Posted in Riddles

Almost Catching Fire

People come and watch, from far away to see
Burning brightly, almost catching fire,
The colder it is the hotter I’ll be.
Then I die.

What am I?

Fall leaves changing colors. “Burning” with bright colors, when it’s cold outside the brighter the colors are.

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Quick Mental Math

Solve this math problem in your head. Divide 30 by a half, then add 10.

70. It’s not 25 because dividing by a half is the same as multiplying by 2.

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A Perfect Counterfeit

A man can make perfect counterfeit bills. They look exactly like real ones, they’re made of exactly the same materials, made the same way, everything. So perfect, one could pretty much call them real bills. One day he successfully makes a perfect copy of another bill. However, he gets caught when he tries to use the copy. How is this possible?

As a counterfeiter, he had lots of counterfeit bills around and he accidentally used one of them as his original. So he made a perfect copy of a counterfeit bill.

Posted in Brain Teasers

Cracked, Made, Told and Played

It can be cracked,
It can be made,
It can be told,
It can be played.

What is it?

A joke.

Posted in Riddles

Cowboy Corral

Two cowboys live next door to each other and both have a corral for their cows in the back. One day they meet at the back of their homes, standing next to a wall dividing their corrals. The first cowboy gets to thinking and asks his neighbor for a cow so he can double his herd. The other cowboys replies, “That’s fine by me partner, cuz then we’ll have the same number of cows?” How many cows does each cowboy own?

We’ll use A to represent the first cowboy and B for the second cowboy.

A + 1 = 2A, so A = 1.
A + 1 = B – 1, so B = 3.

Posted in Brain Teasers

As Heavy As Man’s Golden Greed

A metal neither black nor red,
As heavy as man’s golden greed.
What you do to stay ahead,
With friend or foe or arrow and steed.

What am I?

Lead. Lead is a metallic gray, is very heavy and in order to stay ahead of someone, you need to be in the lead.

Posted in Riddles

Hear a Lot, Say a Lot

I hear a lot
And I say a lot
Few ever look for me
And even fewer ever hear me
I hide in plain sight
Whether its day or night
To help is all I want
But most like to bend me
And as if they had a wand
Never again shall anyone find me
They do this to control
Without realizing the high price of a soul
But when I’m least expected
They’d rather be protected
For there shall be no place to hide
What am I?

The truth.

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