What begins with T, ends with T, and has T in it?
Can you find the missing piece of the Porsche?
Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?
Can you spot the hidden girl in the picture below?
Take one out and scratch my head, I am now black but once was red. What am I?
A professor thinks of two consecutive numbers between 1 and 10. 'A' knows the 1st number and 'B' knows the second number A: I do not know your number. B: Nor do I know your number. A: Now I know. What are the four solutions for this?
Replace the question mark with the number below given a simple math problem.
As a whole I am both safe and secure. Behead me and I become a place of meeting. Behead me again and I am the partner of ready. Restore me, and I become the domain of beasts. What am I?
Can you count the number of blocks in the picture below?
What can go through glass without breaking it?
Pronounced as one letter, And written with three, Two letters there are, And two only in me. I am double, I am single, I am black blue and grey, I am read from both ends, And the same either way.
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.