In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

How can you take 2 from 5 and leave 4?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Name a key which is hardest to turn.

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?