This is a rather long list of challenging brain teasers with solutions. The brain teasers are hand-picked and solutions focus on systematic problem solving.
Know how to solve difficult problems easily without wasting time on random attempts
Our ebook on puzzle solutions by innovative methods will show you just that.
Puzzles for Adults: 50 Brain Teasers with Step-by-Step Solutions: Boost Your Power of Problem Solving
BUY the never before eBook Amazon Kindle version here, from Google Play here and Paperback here.
We are happy to announce on early morning 15th July, 2022 (IST) that the book has been labeled as number 1 new release in puzzles category in Amazon Kindle store in USA marketplace on its 14th day of release.
Second book on Innovative Solutions to Matchstick Puzzles from Suresolv
BUY Creative Matchstick Puzzles Innovative Solutions eBook Amazon Kindle version
BUY the paperback here.
Puzzles and Riddles That You Will Find Interesting
It is a growing list of puzzles and riddles that I felt attracted to and solved. The puzzles belong to all major categories. Each puzzle is divided into two parts - the puzzle and its solution.
A solution focuses on each little step of thought that leads to the solution. And it relies heavily on problem solving strategies and techniques as well as reasoning. Reasoning is my favorite topic - there is so many types and forms of reasoning!
Problem solving techniques are merrily used. But these days, that is during last part of 2021, I favor Question, answer and analysis technique to crack many hard nuts.
Enough of monologue. Go ahead. Taste for yourself. Who is not fond of challenging brain teasers!
Quick jump links to the categories are,
- Riddles
- Inventive puzzles
- Mathematical puzzles
- Logic puzzles
- Number lock puzzles
- Missing number puzzles
- River crossing puzzles
- Ball weighing puzzles
- Matchstick puzzles.
Just click on any of the above links to go through the particular category chosen and to return click on your browser back button.
Riddles
These are the puzzles that I couldn't categorize comfortably. Usually a riddle is small having a small number of key mysteries to unravel. But you will find some of the riddles not easy to conquer.
Riddle of 4 persons crossing a bridge over a river at night
Can You Solve the PROBLEMSOLVING Repetition Riddle?
Airplane riddle of flying around the world
Riddle of lying and truth-telling twins
Two jugs riddle of delivering 1 quart of milk each
How could Sonia sell half a poodle riddle
Transfer a pile of 15 numbered discs riddle
Two burning ropes timer riddle
Devotee and three temples riddle
Big game hunting riddle: How many animals were bagged?
Knight and calculator keypad riddle
Riddle of all around handshakes in a dinner party
Connect the nine dots riddle: step by step solution
Two circles and a line riddle: can you traverse?
The ten barrel face number puzzle
Stepping stone crossing riddle step by step solution
Odd numbered and even numbered piles riddle
Catch the cat hiding in 5 boxes riddle
4 digit number lock riddle: Can you crack the code
Remove discs from 10 touching discs riddle
The Day Before Two Days After The Day Before Tomorrow Riddle
Minimum Number of Socks Logic Puzzle
Four Persons Bridge and Torch River Crossing in 15 minutes Puzzle
4 digit number lock riddle 2657: Can you crack the code?
4 digit number lock puzzle 9285: Can you crack the code?
A Challenging Two Jugs Puzzle of Measuring 8 Liter of Water
Connect seven dots with six lines puzzle
Ant Walk on a Clock Face Riddle
Skin Color and Shoe Color Puzzle
Identify the three cards riddle
Place Six Numbers in Six Circles Riddle
Going Up and Down a Staircase Riddle: A Challenge to Your Wits
Jumping Hare on the 20-Square Grid Puzzle Challenge
Hare Jumping Across a 35-Square Grid Puzzle
Subtraction Riddle Challenge: Fix the Error with Two Interchanges
Challenging Five Chains With 3 Links Riddle: Can You Solve It?
Inventive puzzles
Can You Solve the Inventive Three Light Switches Puzzle?
Mathematical puzzles
Each of these puzzles is predominantly math heavy. Some amount of math you would surely need to solve a puzzle of this category.
But I have taken special care to keep the math simple (simply because I don't know complex math). Even such a hard one like Monkey and coconuts I have solved using Class ten level math that should be understood by most if not all.
Reverse cheque puzzle solution
Counting eggs puzzles based on Euclid's division lemma
Monkey and the coconuts puzzle with solutions
10 digit Conway number puzzle with solution
World's Hardest Easy Geometry Puzzle Solved with Techniques Explained Step by Step
Hard Algebra Puzzles Solved by Basic Exponent Concepts and Reasoning
Three squares in a triangle puzzle
Can you solve the 3 digit number puzzle in 20 mins?
9 squares in a rectangle math puzzle
How many addition signs needed to make sum of 99
Solve 3 puzzles by solving only one: Domain mapping
Minimum number of heads with same number of hairs riddle
Sharing a bicycle puzzle step by step solution
Ship carpenter's problem of plugging a square hole puzzle
Half and half money math puzzle
What is the weight of the fish?
The cat and mouse game with advisor dog
The puzzle of a purchase in the local market
Math Olympiad Question: Can You Solve in 5 minutes?
Cracking the Code: Solving the Changing Length Repetition Riddle
Prism of Cubes with Least Number of Exposed Faces Puzzle
Will of the Eccentric Millionaire in Fractions of Remainders
Calendar Math Puzzle: What Day is Duorp's 25th Urp Birthday?
The Thrifty Shop-owner Coin Collection Division Puzzle
How many two digit consecutive integer sets have sum 100
A Zinger Packaging Box Puzzle: How Many Possible Combinations?
Can You Solve the Twin Birth Statistics Puzzle
Can You Solve the Math Olympiad Question in 2 Minutes?
Can You Solve the Encrypted Arithmetic Puzzle of Addition?
The Number Guessing Party Magic Puzzle
A Baffling Puzzle: How to Evaluate Number of Apples?
How old is Mommy - Solve Tricky Problem on Ages Riddle
Bees Flying to Favorite Flowers Puzzle
The puzzle of two perfect squares
Two Cars on a Circuitous Route Puzzle
The Minimum Digit Arithmetic Progression Puzzle
Logic puzzles
Just like math puzzles, these are logic heavy. I mean heavily dependent on formal logic that involves truth, falsity, implications and so on.
Though logic is a part of math only, in puzzles, logic demands a separate category. These are especially interesting.
Method based solution to Einstein's logic analysis puzzle, whose fish
How to solve Einstein's puzzle whose fish confidently, improved method based solution
Logic puzzle, When is Cheryl's birthday
Liar and truth-teller riddle with step by step easy solution
Liar, Truth-teller, Random-answerer riddle
Flipping coins to heads or tails logic puzzle
Six wrong labeled bottles logic puzzle
Riddle of Name of the Engineer
Who wears which shirt color logic puzzle
Whose birthday on which day logic puzzle
4 logicians and 11 fish fries logic puzzle
Can You Solve the Tricky 3-letter Words Logic Puzzle? (3 Clues)
Sharpen Your Logic: Exercise Your Brain with These Fun Puzzles
Can you Crack the Lying and Truth-telling Lion and Unicorn Puzzle
Knight Knave and Spy Logic Puzzle: Multiple Ways to Reason
Number lock puzzles
Open the Lock Riddle with 682 in Clues
Open the lock riddle with 154 in clues
Number lock puzzle: Can you crack the code?
4 digit number lock riddle: Can you crack the code
4 digit number lock riddle 2657: Can you crack the code?
4 digit number lock puzzle 9285: Can you crack the code?
3 digit number lock puzzle with 3 clues: Crack the code
Can You Solve the Number Lock Puzzle with 5 Clues including 682?
5 digit number lock puzzle: Can you crack the code?
4 digit number lock puzzle with 7 clues: Can you crack the code?
Can You Crack the Number Lock Puzzle Codes with 241 in Clues?
Crack the Code to Solve Number Lock Puzzle with 548 in Clues
Can You Crack the Hard 5 Digit Number Lock Puzzle?
Challenge: Crack the Number Lock Code Using Least Number of Clues
Solve the 3 digit number lock puzzle with 4 clues including 368
Challenge: Solve the Number Lock Puzzle with Minimum Clues
Crack the 4 digit Combination Lock Code from 4 Clues
Real Challenge: Open the 3 digit Number Lock Using First 4 Clues
Missing number puzzles
Crack the Code Math Riddle: Missing Number Puzzle including 82
Solve the Missing Number Puzzle with 5 Equations
Crack the Hidden Code of Missing Number Puzzle
Solve the Missing Number Puzzle with 2 in One of 5 Equations
River crossing puzzles
This category has a small number of puzzles but these are highly popular and engaging ones.
Farmer with fox, goose and bag of corn crossing the river puzzle
Two pigs and two hens crossing river puzzle
3 monkeys and 3 humans crossing river puzzle
King queen minister washerman river crossing puzzle
Four friends river crossing puzzle in a 100 kg capacity boat
River Crossing Puzzle for An Army Detachment
Ball weighing puzzles
This is also a small category with only a few puzzles. But again these are of a kind as the saying goes.
None of these are easy to solve, but again not too hard to understand the solution also.
Find the heavier among 8 identical balls in 2 weighing puzzle
Find the fake ball among 8 identical balls in 3 weighing puzzle
Find the fake ball among 9 identical balls in 3 weighing puzzle
Find the fake ball among 12 identical balls in 3 weighing hard puzzle with solution
Matchstick puzzles
This is my favorite category and I always keep a large box of matchsticks within reach to play with when I feel the need.
It is a wonder how many engaging creations can be made with these innocuous little sticks!
Solution to 6 triangles to 5 triangles in 2 moves, first matchstick puzzle
Matchstick puzzle 5 squares to 4 squares in 2 moves
Matchstick puzzle 5 squares to 4 squares in 3 moves
Matchstick puzzle, Turn around the fish in 3 moves
Fifth Matchstick puzzle, Move 3 sticks in tic-tac-toe figure to form 3 perfect squares
Hexagonal wheel to 3 triangles by removing 4 sticks
Convert 5 squares to 4 squares in 3 stick moves, third 5 square matchstick puzzle
Matchstick Puzzle - Make the kite nose-dive in 5 stick moves
Make 5 squares from 6 in 2 stick moves - 6 square matchstick puzzle
Move 3 sticks and convert 5 squares to 4 squares in 4th 5 square matchstick puzzle
Move 3 sticks and convert 4 squares to 3 squares matchstick puzzle
Move 8 sticks and convert 5 squares to 2 squares matchstick puzzle
First Move 3 sticks and make 2 squares matchstick puzzle
Second Move 3 sticks and make 2 squares matchstick puzzle
Remove 2 matchsticks to leave 6 triangles puzzle
Add 3 matchsticks to make 4 triangles - lateral thinking stick puzzle
Move 1 stick to make 4 closed shapes each with 3 or 4 sides
Move 2 sticks to make 5 closed shapes matchstick puzzle
Move 2 to make 7 squares matchstick puzzle - solution based on problem solving and innovation model
Move 4 to turn the tower upside down Matchstick puzzle
Move 2 matches to make 6 squares and move 8 matches to make 6 squares - a pair of matchstick puzzles
Move 6 matches to make 5 squares
Move 2 matches and add 1 to make 2 diamonds puzzle
Move 4 matches to make 5 triangles matchstick puzzle
Remove 4 matches to leave 4 equal triangles puzzle
Transfer 1 match in two matchstick groups puzzle
Move 3 matches to make 5 equal squares puzzle
Matchstick puzzle move 4 to make 10 squares
Matchstick puzzle Move 2 for form 11 squares
Move 2 matches to make 3 triangles
Remove 3 matches to leave 3 triangles
Move 3 matches to make 7 squares matchstick puzzle
Move 4 to make 6 squares matchstick puzzle
Move 4 matches to form 3 square area
Move 4 matches to make 4 squares matchstick puzzle
Move 2 matches to form 4 equal squares matchstick puzzle
Move 3 matches to create 3 squares of different sizes
Matchstick star puzzle - Move 2 matches to form 6 triangles
Move 2 matches to form 5 triangles from 6 triangles puzzle
Remove 3 and move 2 matches to form 3 squares puzzle
Enclose maximum number of triangles by 9 matchsticks
Remove 4 matches to leave 6 diamonds matchstick puzzle
Turn around the face of the pig in 2 moves puzzle
Add 10 matches to create 5 diamonds matchstick puzzle
Move 3 matches of 6 squares to create 5 squares puzzle
Turn the Westerly fish to Southerly swimming fish in 2 moves
Remove 5 matches to leave 5 squares matchstick puzzle
Move 4 matches to make 6 triangles matchstick puzzle
Remove 6 matches to leave exactly 2 squares puzzle
Move 3 matches to form 6 squares matchstick puzzle
Move 3 Matches to Form Exactly 3 Rectangles Puzzle
Move 4 matches to leave 2 triangles matchstick puzzle
Move 3 sticks to form six squares matchstick puzzle
Move 3 matches to form 2 large and 1 small triangle puzzle