Logic Puzzles

5 Pirates
5 Pirates
5 pirates of different ages have a treasure of 100 gold coins. On their ship, they decide... Try Puzzle >>
5 Pirates Version 2
5 Pirates Version 2
5 pirates of different ages have a treasure of 100 gold coins. On their ship, they decide... Try Puzzle >>
Apples and Friends
Apples and Friends
You have a basket containing ten apples. You have ten friends, who each desire an apple. You... Try Puzzle >>
Bags of Marbles
Bags of Marbles
You have three bags, each containing two marbles. Bag A contains two white marbles, Bag B contains... Try Puzzle >>
Black and White Hats
Black and White Hats
Cannibals ambush a safari in the jungle and capture three men. The cannibals give the men a... Try Puzzle >>
Breaking Up a Chocolate Bar
Breaking Up a Chocolate Bar
How many steps are required to break an m × n sized bar of chocolate into 1 × 1... Try Puzzle >>
Burning Island
Burning Island
A man is stranded on an island covered in forest. One day, when the wind is blowing from... Try Puzzle >>
Cards in a Square
Cards in a Square
Take from a pack of cards all the Aces, Kings, Queens and Jacks. Arrange them in a 4 ×... Try Puzzle >>
City of Lies or Truth
City of Lies or Truth
You are at an unmarked intersection ... one way is the City of Lies and another way is the... Try Puzzle >>
Crates of Fruit
Crates of Fruit
You work at a fruit factory. There are 3 crates in front of you. One crate contains only... Try Puzzle >>
Cut Cube
Cut Cube
A solid, four-inch cube of wood is coated with blue paint on all six sides. Then the cube... Try Puzzle >>
Cutting Across A Cross
Cutting Across A Cross
Here is an ordinary cross. You are allowed to make two straight cuts across it. How... Try Puzzle >>
Deadly Choice
Deadly Choice
A man is caught on the King's property. He is brought before the King to be punished.... Try Puzzle >>
Explain: Elevator
Explain: Elevator
A man works on the 10th floor and always takes the elevator down to ground level at the end... Try Puzzle >>
Explain: Hospital
Explain: Hospital
A Man carries his son into the hospital because his son has a nail in his foot. The Surgeon... Try Puzzle >>
Farmer Crosses River
Farmer Crosses River
A farmer wants to cross a river and take with him a wolf, a goat, and a cabbage. There is a... Try Puzzle >>
Four Adventurers and a Small Canoe
Four Adventurers and a Small Canoe
Four adventurers (Alex, Brook, Chris and Dusty) need to cross a river in a small canoe. The... Try Puzzle >>
Four People Travel
Four People Travel
Four people are traveling to different places on different types of transport. Their names... Try Puzzle >>
Four-sided Dice
Four-sided Dice
I have three special four-sided dice. They have one letter on each side. When I roll... Try Puzzle >>
Gears 1
Gears 1
There are five gears connected in a row, the first one is connected to the second one, the... Try Puzzle >>
Gears 2
Gears 2
There are five gears connected in a row, the first one is connected to the second one, the... Try Puzzle >>
Girl and Boy
Girl and Boy
A boy and a girl are talking. "I am a boy" - said the child with black hair. ... Try Puzzle >>
Have You Herd Of Cows
Have You Herd Of Cows
Old Farmer Palmer has a herd of cows, but he always seems to forget how many animals there... Try Puzzle >>
Knights and Knaves
Knights and Knaves
There are three people (Alex, Brook and Cody), one of whom is a knight, one a knave, and one... Try Puzzle >>
Knights and Knaves 2
Knights and Knaves 2
There are three people (Alex, Brook and Cody), one of whom is a knight, one a knave, and one... Try Puzzle >>
Lying about their age
Lying about their age
Alex, Brook, Cody, Dusty, and Erin recently found out that all of their birthdays were on the... Try Puzzle >>
Marble Mix Up
Marble Mix Up
Years ago, to puzzle his friends, a scientist gave one of four containers containing blue and/or... Try Puzzle >>
Matching Socks
Matching Socks
You are about to leave for holiday, but you forgot socks! You race back to your room, but... Try Puzzle >>
Math Hats
Math Hats
A scientist gathered four math students. They were then lined up so that each one could see... Try Puzzle >>
Missing Fish
Missing Fish
Two fathers took their sons fishing. Each man and son caught one fish, but when they returned... Try Puzzle >>
Monty Hall
Monty Hall
This is a famous puzzle based on the show "Let's make a deal". The host,... Try Puzzle >>
NIM-ble Thinking
NIM-ble Thinking
The game of "NIM" involves rows of matches laid out to make a triangle. When it is... Try Puzzle >>
Path Plodding Puzzle
Path Plodding Puzzle
The idea is to plod your way along all the streets on this map without going down a street... Try Puzzle >>
Pet Show
Pet Show
At the Pet Show recently I noticed that all except two of the entries were cats, all except... Try Puzzle >>
Pure Coin-cidence
Pure Coin-cidence
Look at the triangle of six pennies below: I want to turn this triangle upside-down: ... Try Puzzle >>
Red-eyed Monks
Red-eyed Monks
There is a monastery of silent monks with no mirrors and one important rule: no red eyes! If... Try Puzzle >>
Relative Picture
Relative Picture
A man on a park bench is looking at a small portrait. You ask him, "Who is that in the... Try Puzzle >>
Secret Mail
Secret Mail
You want to send a secret message to your friend Alex in the mail. But Sam, who you don't... Try Puzzle >>
Shirt Friends
Shirt Friends
At a restaurant downtown, Mr. Red, Mr. Blue, and Mr. White meet for lunch. Under their coats they... Try Puzzle >>
The Collapsing Bridge
The Collapsing Bridge
A bridge will collapse in 17 minutes. 4 people want to cross it before it will collapse.... Try Puzzle >>
The Schoolgirl Problem
The Schoolgirl Problem
In a boarding school there are fifteen schoolgirls who always take their daily walks in groups... Try Puzzle >>
Three Boxes with Two Balls Each
Three Boxes with Two Balls Each
The first box has two white balls. The second box has two black balls. The third box has a... Try Puzzle >>
Three Choices with One Coin
Three Choices with One Coin
At a restaurant, how could you choose one out of three desserts with equal probability with... Try Puzzle >>
Three Coaches, Three Athletes and a River
Three Coaches, Three Athletes and a River
There are three Athletes (Alex, Brook and Chris) and their individual Coaches (Murphy, Newlyn... Try Puzzle >>
Three Hats
Three Hats
Three people enter a room and have a green or blue hat placed on their head. They cannot see... Try Puzzle >>
Three Of The Best
Three Of The Best
Professor Frantic set these three problems to her class of maniacs at Clueless University.... Try Puzzle >>
Touching Marbles
Touching Marbles
Arrange these six marbles so that each one touches all four marbles of a different colour. Try Puzzle >>
Triplets
Triplets
Three sisters are identical triplets. The oldest by minutes is Sarah, and Sarah always tells... Try Puzzle >>
Two Barbers
Two Barbers
There are only two barbers in town One of them has a nice, neatly trimmed head of hair.... Try Puzzle >>
Who Squares Wins
Who Squares Wins
The diagram below shows a pattern made up of squares: How many squares can be found... Try Puzzle >>