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spring
Puzzle classics
Puzzle classics with interactive A, B, C, D buttons
Puzzle classics
Puzzle classics with interactive A, B, C, D buttons
#159
Apr 21, 2022
How many different EQUILATERAL triangles are indicated by three dots that mark their corners?
#156
Apr 17, 2022
Eight Queens can be placed on the chess board so that no two Queens are attacking each other.Four Queens are already pre-placed. What other 4 cells should be occupied by the remaining 4 Queens?
#153
Apr 13, 2022
How many different triangles can you spot in the picture of this cat?
#152
Apr 13, 2022
The arrows indicate a familiar 4-letter word.What option is NOT true related to the word?
#151
Apr 12, 2022
How many different squares indicated by four spots can be spotted here?
#150
Apr 11, 2022
This shape can be cut into 2 pieces, so that when re-arranged they can produce a regular square.What would be the number of cells in each piece?
#149
Apr 10, 2022
You must boil an egg for exactly 5 minutes. All you have is a 3-min hourglass and a 4-min hourglass.How many times will you turn the 4-min hourglass upside-down to complete the task?
#148
Apr 09, 2022
A jigsaw contains 100 pieces. A move consists of joining two clusters, including clusters of just one piece.What is the minimum number of moves required to complete the puzzle?
#147
Apr 07, 2022
What three numbers have their sum equal to their product?Only one statement is true regarding these numbers. Which one?
#145
Apr 05, 2022
Is it possible to cut a whole in one cube to enable another identically-sized cube to pass through it?
#144
Apr 05, 2022
Find a number less than 100 that is increased by one-fifth of its value (+20%) when its digits are reversed.
#143
Apr 03, 2022
A sphere fits exactly inside a thin-walled cylinder that has a height and the diameter equal to the diameter of the sphere.Let's mark the surface area of the sphere as SA(s) and the lateral surface ar...
#142
Apr 02, 2022
In this stack of three regular dice, 13 faces are visible - 3 from each of the four sides and the 13th - the top one.What is the sum of spots on the hidden faces?
#141
Apr 01, 2022
A woman was carrying a basket of eggs to market when a passerby bumped her. She dropped the basket and all the eggs broke. The passerby, wishing to pay for her loss, asked:“How many eggs were in your ...
#140
Mar 31, 2022
A tetrahedron has been sliced from a cube, as is shown. Can you figure out how its volume relates to the remainder of the cube?
#159
|
Apr 21, 2022
How many different EQUILATERAL triangles are indicated by three dots that mark their corners?
#156
|
Apr 17, 2022
Eight Queens can be placed on the chess board so that no two Queens are attacking each other.Four Queens are already pre-placed. What other 4 cells should be occupied by the remaining 4 Queens?
#153
|
Apr 13, 2022
How many different triangles can you spot in the picture of this cat?
#152
|
Apr 13, 2022
The arrows indicate a familiar 4-letter word.What option is NOT true related to the word?
#151
|
Apr 12, 2022
How many different squares indicated by four spots can be spotted here?
#150
|
Apr 11, 2022
This shape can be cut into 2 pieces, so that when re-arranged they can produce a regular square.What would be the number of cells in each piece?
#149
|
Apr 10, 2022
You must boil an egg for exactly 5 minutes. All you have is a 3-min hourglass and a 4-min hourglass.How many times will you turn the 4-min hourglass upside-down to complete the task?
#148
|
Apr 09, 2022
A jigsaw contains 100 pieces. A move consists of joining two clusters, including clusters of just one piece.What is the minimum number of moves required to complete the puzzle?
#147
|
Apr 07, 2022
What three numbers have their sum equal to their product?Only one statement is true regarding these numbers. Which one?
#145
|
Apr 05, 2022
Is it possible to cut a whole in one cube to enable another identically-sized cube to pass through it?
#144
|
Apr 05, 2022
Find a number less than 100 that is increased by one-fifth of its value (+20%) when its digits are reversed.
#143
|
Apr 03, 2022
A sphere fits exactly inside a thin-walled cylinder that has a height and the diameter equal to the diameter of the sphere.Let's mark the surface area of the sphere as SA(s) and the lateral surface ar...
#142
|
Apr 02, 2022
In this stack of three regular dice, 13 faces are visible - 3 from each of the four sides and the 13th - the top one.What is the sum of spots on the hidden faces?
#141
|
Apr 01, 2022
A woman was carrying a basket of eggs to market when a passerby bumped her. She dropped the basket and all the eggs broke. The passerby, wishing to pay for her loss, asked:“How many eggs were in your ...
#140
|
Mar 31, 2022
A tetrahedron has been sliced from a cube, as is shown. Can you figure out how its volume relates to the remainder of the cube?
We’ve gathered a collection of the most “classic” brainteasers which survived through years and continents. We’ve added visuals and some options for your convenience to solve them online. You will recognize a lot of them, though some of these brain teaser puzzles can happen to appear rather “new” to you due to the twist(s) in their particular interpretation(s).
Among the brain teasers in this collection you will find lateral thinking puzzles, visual puzzles, spatial puzzles, lateral thinking puzzles, logic puzzles and much more.
A good portion is about math riddles. A bunch of geometry puzzles.
Among the best brain teaser puzzles you would find such classics as:- A Chessboard and Grains of Rice
- The 1st Riddle of the Sphinx
- The 2nd Riddle of the Sphinx
- The Wolf, Goat and Cabbage Challenge
Enjoy both the solving and the recognition processes of these “good old” mind puzzlers!