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.
Can you solve this tricky river crossing puzzle in 15 minutes? 2 pigs and 2 hens to cross a river in an automated boat that starts automatically. Read on...
Fox goose corn riddle: Farmer to cross river with fox, goose and corn in a boat that takes at most two. Fox eats goose and goose eats corn if left alone.
Move 3 matches to make 2 squares in matchstick puzzle figure. How many solutions can you find? Time to solve 5 minutes. It is a fun puzzle. Give it a try.
Move 3 matches to make 2 squares in 1st matchstick puzzle of this type. How many solutions can you find? Time limit 5 minutes. Give it a try. It'll be fun.
5 squares puzzle: move 8 sticks to make 2 squares in the 5 squares puzzle figure. How many ways can you solve the puzzle? You have 30 minutes to solve.
Move 3 matches to make 3 squares in the puzzle figure. How many solutions can you find? Time to solve 10 minutes. It's not a difficult puzzle and you should enjoy solving it...
Move 3 matches to make 4 squares from 5 squares puzzle figure. This is the 4th 5 squares matchstick puzzle of this type. You have to solve it in 10 minutes.
Move 2 sticks to make 5 squares from the 6 squares matchstick puzzle figure. How many ways can you do it? You have 10 minutes to solve the puzzle.
Kite Matchstick Puzzle: Move 5 matches to make the Kite dive down. This is a direction reversing puzzle that is not easy to solve in given time of 20 mins.
In the 5 squares matchstick puzzle figure you have to move 3 matchsticks to make 4 squares. You have 10 mins to solve this 3rd 5 squares matchstick puzzle.
