Easy to hard brain teasers with systematic solutions. Matchstick puzzles, riddles, math puzzles, logic puzzles are some of the types.
In liar and truth-teller riddle, to know the safe path, a traveler can ask only one question to any one of a habitual liar or a truth-teller. What to ask?
Bridge Crossing Riddle: 4 persons to cross a bridge at night in 17 mins. Two persons can cross at a time with crossing speeds of each different. Read on...
The 7 squares matchstick puzzle: Move 2 matches to make 7 squares in the puzzle figure. Time 10 mins. Apply reasoning based on matchstick puzzle concepts.
12 balls weigh 3 times to find the one fake. All 12 balls look same and you have a pan balance with no weights. Time to solve the 12 balls puzzle 40 mins.
Yes. To know what is systematic problem solving, solve the problem solving riddle. Discover the key hidden in two friend's conversation not just by chance.
9 balls 1 different weight puzzle: Find the fake ball in 3 weighs. All balls look alike. You are given a pan balance with no weights. Time to solve 30 mins.
Two jugs of water riddle: Fill 4 litres of water with two empty jugs of 5 litres and 3 litres capacity and a tank full of water. Pour any number of times.
Move 2 matches to form 5 matchstick shapes of squares, triangles or rhombuses. How many such new figures can you make? Total recommended time 10 minutes.
Move 1 stick to make 4 matchstick shapes of triangles, squares or rhombuses. How many such new figures can you make? Recommended time 10 minutes.
How to make 4 triangles with 6 sticks! Add 3 matches to the single matchstick triangle and make 4 triangles with 6 sticks. Time to solve 5 minutes. Can you?
