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.
One of the 100 blue-eyed logicians imprisoned in an island had to correctly tell his eye color for all to be free. But none can see his own eye color. Things changed when a visitor announced, "At least one of you has Blue eyes."
Three light bulbs in a closed room belong to three switches outside. Switch off and on freely, enter the room once to identify the switch-bulb pairs.
You have 5 chains with 3 links each. Cut a link and close it to connect two chains. How many number of links you need to cut to make a circular chain?
An erroneous subtraction shows 789 - 456 = 123. It can be corrected by 3 pairs of digit interchanges (7, 3), (3, 4), and (9, 6). Can you correct it in 2?
A hare jumps over a 35 square grid starting from 1 never visiting a square twice. It jumps only vertically or horizontally. Place 5 jump counts...Read on...
A hare jumps over a 20-square grid. It continues jumping to an adjacent square up or down, never revisiting a square. Its 5th, 10th, 15th jumps...Read on...
This staircase riddle challenges your problem-solving skills by combining logical thinking with the concept of two-way movement on a staircase.
Place six numbers 1, 2, 3, 4, 5, 6 in six circles as in the figure. Only condition is: no two consecutive numbers can be placed in two connected circles.
