Welcome to MindCipher, a social repository of the world's greatest brain teasers, logic puzzles and mental challenges.
1 2 Running Race
Phil and Sal race each other for 100 yards. Sal wins by 10 yards. They decide to race again, but this time, to even things up, Sal begins 10 yards behind the start line. Assuming that both run with t ...
Submitted by Aakash
Doable
3.3
1 8 Parodoxical Statements from Life
Nobody goes to that restaurant; it’s too crowded. Don’t go near the water ’til you have learned how to swim. The man who wrote such a stupid sentence can not write at all. If you get this messa ...
paradox Submitted by Ravi
Doable
5.2
1 2 Random Puzzle
Here’s something I heard from a friend, I thought it was appropriate. What do you call a 4 foot tall fortune teller who is wanted by the law? Good luck.
riddle funny Submitted by Ravi
Hard
7.3
0 4 Plane In The Wind
An airplane flies in a straight line from airport A to airport B and back. It has constant engine speed and no wind. Will its total flight time increase, decrease or stay the same if throughout bot ...
Submitted by Valentin
Doable
4.0
0 5 The Twiddled Bolts
Two identical bolts are placed so that their helical grooves intermesh. If you move the bolts around each other as shown in the picture, would they a) move inward b) move outward c) remain the same d ...
Submitted by Valentin
Doable
6.0
0 1 What is Sammy exactly?
Police! Police! She cried, Police! he died! Sammy was my friend. If this is the end and i wont see him again, let me give just a kiss. Sammy was my friend. Down the roar he shall slide turning ro ...
Submitted by Aakash
Easy
3.0
0 4 Don't be a Square
Shown is a large square made up of four shapes, and a separate square, labeled with an E. Using all five of the shapes (A through E) only once, can you form a second perfect square?
Submitted by Aakash
Doable
6.0
0 4 Cutting Numbers
When is Seven half of Twelve?
lateral thinking Submitted by Ravi
Easy
3.0
0 3 My eyes
My eyes fold like telescopes and view the world like periscopes Who am I? For a hint you should know I run really slow and walk as fast as i can. Do you know who I am?
Submitted by Aakash
Doable
6.0