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All Puzzles

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27 likes 9.2
(Impossible.)
Three Idols in Logical
Classic: Three gods A, B, and C are called, in some order, True, False, and Random. T...
Added about 1 year ago by M2JOHNSON currently with 70 comments
9 likes 7.8
(Challenging)
Marble Weights in Logical
You are given a set of scales and 12 marbles. The scales are of the old balance variety...
Added about 1 year ago by jaX currently with 43 comments
23 likes 7.5
(Challenging)
Cards With Crosses in Logical
You have a stack of 23 cards. Each card has an image of a cross on one side, and an ima...
Added about 1 year ago by jaX currently with 33 comments
19 likes 7.4
(Challenging)
The Number Problem in Logical
What does 3685=? 8809=6 7111=0 2172=0 6666=4 1111=0 3213=0 7662=2 8096=5 931...
Added about 1 year ago by Tsion currently with 41 comments
15 likes 7.1
(Challenging)
12 Identical Balls in Logical
You have 12 identical balls. One of them is slightly different in weight than the rest...
Added about 1 year ago by kash currently with 49 comments
19 likes 7.0
(Challenging)
The North Pole Bear Puzzle Reloaded in General
A man walks 1 mile south, then 1 mile east, and finally 1 mile north to find himself in...
Added over 2 years ago by Valentin currently with 38 comments
24 likes 7.0
(Challenging)
The Famous Hole in a Sphere in Mathematics
This incredible problem was first made famous by Martin Gardner with his 'Mathematical ...
Added over 2 years ago by Valentin currently with 49 comments
16 likes 6.9
(Challenging)
Crazy Google Interview Question in Lateral Thinking
You are shrunk to the height of a nickel and your mass is proportionally reduced so as ...
Added about 1 year ago by ig0r currently with 45 comments
11 likes 6.9
(Challenging)
Don't be a Square in General
Shown is a large square made up of four shapes, and a separate square, labeled with an ...
Added about 1 year ago by vette982 currently with 33 comments
11 likes 6.9
(Challenging)
Happy Handshaking in Logical
Jack and his wife went to a party where four other married couples were present. Every ...
Added about 1 year ago by vette982 currently with 45 comments
12 likes 6.7
(Challenging)
The Neighbourhood in Logical
People say Einstein suggested that 98% of the world's population couldn't figure out th...
Added about 1 year ago by ace currently with 36 comments
7 likes 6.6
(Challenging)
Find the Missing Number in Mathematics
In this table, each row across follows the same pattern of numbers. See if you can disc...
Added about 1 year ago by copter currently with 15 comments
10 likes 6.5
(Challenging)
Fork in the road in Logical
You are walking down a road and arrive at a fork that splits the road into two separate...
Added about 1 year ago by city_slick currently with 38 comments
4 likes 6.4
(Challenging)
Number Sequence in Mathematics
What number comes next in this sequence? 1 8 70 627 5639
Added about 1 year ago by jaX currently with 13 comments
9 likes 6.3
(Challenging)
Cracking the Safe in Logical
You are to open a safe without knowing the combination. Beginning with the dial set at ...
Added about 1 year ago by johnp currently with 32 comments