Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

What occurs twice in a week, once in a year but never in a day?

People make me, save me, change me, raise me. What am I?

What has many teeth, but cannot bite?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?