Half Move Mate
White plays and mates in half a move. How is it possible?
SOLUTION
Difficulty: Medium
Samuel Loyd (1841 – 1911), born in Philadelphia and raised in New York City, was an American chess player, chess composer, puzzle author, and recreational mathematician. As a chess composer, he authored a number of chess problems, often with interesting themes. At his peak, Loyd was one of the best chess players in the US and was ranked 15th in the world, according to chessmetrics.com.
High Tide
A boat has a ladder with six rungs on it. The rungs are spaced one foot from each other, the lowest one starting a foot above the water. The tide rises with 10 inches every 15 minutes.
How many rungs will be still above the water 2 hours later?
SOLUTION
Penrose Railway Maze 3
Get from A to B, moving only over smooth lines, without reversing and making sharp turns.
SOLUTION
The Dark Bridge
Four friends are trying to cross a bridge in complete darkness, but have only one flashlight. They need respectively 1, 2, 7, and 10 minutes to cross the bridge, and if any three of them step on the bridge at the same time, it will collapse. How many minutes do they need at least in order
SOLUTION
Chiming Wall Clock
Your grandma’s wall clock chimes the appropriate number of times at every whole hour, and also once every 15 minutes. If you hear the wall clock chime once, how much more time do you need to figure out what the time is, without looking at it?
SOLUTION
Careless Truck Driver
A truck driver was going the opposite way on a
SOLUTION
Puddle of Water
A man is found in a room without any windows, with just one door which is locked from
SOLUTION
Chess Cylinder
Imagine the following game occurs on a cylindrical board, on which the a-file and h-file are attached to each other. White plays first and mates Black in 2 moves.
SOLUTION
