For each one, first the puzzle is posed for you to solve within a recommended time. A detailed systematic solution then follows.
Matchstick puzzles, riddles, math puzzles, logic puzzles, river crossing puzzles, ball weighing puzzles are some of the categories.
The full list of all brain teasers with solutions is available in the link,
Challenging brain teasers with solutions: Long list.
This will always be the most up-to-date list with the brain teasers classified into categories that can be browsed separately.
In a two player game, each player removes 1 disc or two adjacent discs in alternate turns from 10 adjacent disks. Player removing last disc wins the game.
4 logicians ate up 11 pieces of fish fries but didn't notice how many each had eaten. They could discover this from a few questions and answer. Can you?
In a two player game, in alternate turns, each player is to pick up 1 to 5 chocolates from a pile of 100. How to win by picking up the last chocolate?
Analyze five clues each a 4 digit code with hints on right digit and right place in the code to find the 4 digit code that will open the number lock.
Five friends have their birthdays on consecutive days, all between Monday and Friday. From 3 given conditions find their birthdays. Time to solve 5 mins.
A cat hides in boxes 1 to 5. Each night the cat must jump to an adjacent box. Each morning, you open a box to catch the cat. How can you catch the cat?
Four of them wear shirts of 4 different colors. Whoever wears blue tells the truth, others lie. Find colors of their shirts from their statements.
Make a circular chain using four chain links as in the figure. You can open and close maximum three links. Time to solve 10 minutes. Hint: Think laterally.
Split a pile of coins numbered 1 to 8 into odd numbered and even numbered piles of coins in two of the five slots without placing a coin on a smaller one.
A ship carpenter has a problem of plugging a 12in square hole by cutting a single 9in x 16in wood block into two pieces to join the two. Is it possible?
