Source: Rob Eastaway, New Scientist
Saturday, March 12, 2022
A Path Puzzle 2
The illustration shows eight houses and their front doors. The problem is to draw a line from the door of A to the door of another line that joins the doors of B and B', a third line that joins C to C', and a fourth that joins D to D'. No line may cross another line, pass through the sides of a house, or cross the outside rectangular border of the picture. The problem may seem impossible to solve, but it can be done.
Source: The Tokyo Puzzles
Friday, March 4, 2022
Stars Puzzle
At least how many stars should you move so that each row and each column has three stars?
source: Emrehan Halıcı
3
Monday, February 28, 2022
Monday, February 21, 2022
Matchstick Puzzle #7
Move two matchsticks to create another correct equation. Note: Matchsticks can be moved only to form numbers.
Puzzle from: Emrehan Halıcı
Answer: 13+52=65
Tuesday, February 15, 2022
Monday, February 14, 2022
Twenty Socks in a Drawer
A girl had twenty socks in a drawer.
There were ten red socks and ten green ones. One night, just as she was going
to take out a pair of socks, the lights went out. If she wants to get a pair of
the same color, red or green, what is the smallest number of socks she must
take out of the drawer? Assume that the socks are all mixed up.
Soseki's Books
On the shelf stand volumes 1, 2, and 3 of the first edition of Soseki's I Am a Cat. The books have been lying there for a long time, and moths have dug a tunnel from page one of volume 1 to the last page of volume 3. The paper in each volume is 3 centimeters thick and its cover is 1 centimeter (front and back covers are 5 millimeters each). Can you tell how long the tunnel is?
Source: The Tokyo Puzzles
Friday, February 4, 2022
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