The Puzzle Book with Innovative Solutions
You'll enjoy solving its 50 hand-picked puzzles, but you'll also learn how to solve hard problems easily without random attempts by innovative methods.
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.
You'll enjoy solving its 50 hand-picked puzzles, but you'll also learn how to solve hard problems easily without random attempts by innovative methods.
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.
Ready to challenge your thinking? Logic puzzles are a great way to exercise your brain and improve your reasoning skills. Here are three tricky ones.
Joining number of day before, days after statements together may confuse you. Example: The day before two days after the day before tomorrow is Saturday...
Test your puzzle skills on this tricky 3-letter words logic puzzle. Find the hidden word among six using just three clues! (Yes or No answers only).
The changing length repetition riddle: What is the 2012th letter in the indefinitely continuing sequence: PATTERNIDOF1STPATTERNIDOF2NDPATTERNIDOF3RD...?
Math Olympiad Question: x(x + 2)(x +4)(x + 6) = 9. Can you solve in 5 minutes? Hint: solve using mathematical deductive reasoning and basic math concepts.
In the puzzle figure of two small triangles and one large triangle, move 3 matches to form 2 large and 1 small triangle with no hanging stick.
A farmer bought 100 cows, sheep and chickens at Rs.1000. Cost of cows Rs.50 each, sheep Rs.10 each, and chickens 50 paise each. How many of each purchased?
In the puzzle figure of 5 matchstick squares, move 3 sticks to form six squares. No matchstick should be hanging. Each should be a part of a square.