• Brain Teasers & Puzzles

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    • Smiling Guards Puzzle

      Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, “Why are you smiling?”

      How did he know his companion was smiling?

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      SherlockHolmes Expert Easy puzzles.
      • 1,237.5K views
      • 1 answers
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    • Judge and thief puzzle

      A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say a last sentence in order to determine the way the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded.
      The thief speaks a last sentence and to everybody surprise some minutes later he is set free because the judge cannot determine his penalty.

      What did the thief said?

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      SherlockHolmes Expert Brain Teaser.
      • 1,240.1K views
      • 2 answers
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    • Meaurement of water puzzle

      How to measure exactly 4 gallon of water from 3 gallon and 5 gallon jars.
      You have unlimited water supply from a running tap.
      measure 4 gallon water using 3 and 4 gallon jar.

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      SherlockHolmes Expert Math Puzzles.
      • 1,239.2K views
      • 1 answers
      • -1 votes


    • Distance travel Puzzle

      Every day, Jack arrives at the train station from work at 5 pm.
      His wife leaves home in her car to meet him there at exactly 5 pm, and drives him home. One day, Jack gets to the station an hour early, and starts walking home, until his wife meets him on the road. They get home 30 minutes earlier than usual.

      How long was he walking?

      Distances are unspecified. Speeds are unspecified, but constant.
      Give a number which represents the answer in minutes.

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      SherlockHolmes Expert Math Puzzles.
      • 1,238.6K views
      • 1 answers
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    • Lion, Goat and Grass Puzzle

      A Man wants to bring a Lion, a goat, and Grass across the river. The boat is tiny and can only carry one passenger at a time. If he leaves the Lion and the goat alone together, the Lion will eat the goat. If he leaves the goat and the Grass alone together, the goat will eat the Grass.
      How can he bring all three safely across the river?

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      SherlockHolmes Expert Brain Teaser.
      • 1,267.9K views
      • 1 answers
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    • Maths Puzzle

      In a bouquet of flowers, all but two are roses, all but two are tulips, and all but two are daisies.

      How many flowers are in the bouquet?

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      SherlockHolmes Expert Brain Teaser.
      • 1,241.4K views
      • 1 answers
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    • Train and Bee puzzle

      Two trains enter a tunnel 200 miles long, traveling at 100 mph at the same time from opposite directions. As soon as they enter the tunnel a supersonic bee flying at 1000 mph starts from one train and heads toward the other one. As soon as it reaches the other one it turns around and heads back toward the first, going back and forth between the trains until the trains collide in a fiery explosion in the middle of the tunnel.

      How far did the bee travel?

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      SherlockHolmes Expert Aptitude Question.
      • 1,241.4K views
      • 1 answers
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    • Eight married couples Challenging Puzzle

      Eight married couples meet to lend one another some books. Couples have the same surname, employment and car. Each couple has a favorite color. Furthermore we know the following facts:

      1. Daniella Black and her husband work as Shop-Assistants.
      2. The book “The Seadog” was brought by a couple who drive a Fiat and love the color red.
      3. Owen and his wife Victoria like the color brown.
      4. Stan Horricks and his wife Hannah like the color white.
      5. Jenny Smith and her husband work as Warehouse Managers and they drive a Wartburg.
      6. Monica and her husband Alexander borrowed the book “Grandfather Joseph”.
      7. Mathew and his wife like the color pink and brought the book “Mulatka Gabriela”.
      8. Irene and her husband Oto work as Accountants.
      9. The book “We Were Five” was borrowed by a couple driving a Trabant.
      10. The Cermaks are both Ticket-Collectors who brought the book “Shed Stoat”.
      11. Mr and Mrs Kuril are both Doctors who borrowed the book “Slovacko Judge”.
      12. Paul and his wife like the color green.
      13. Veronica Dvorak and her husband like the color blue.
      14. Rick and his wife brought the book “Slovacko Judge” and they drive a Ziguli.
      15. One couple brought the book “Dame Commissar” and borrowed the book “Mulatka Gabriela”.
      16. The couple who drive a Dacia, love the color violet.
      17. The couple who work as Teachers borrowed the book “Dame Commissar”.
      18. The couple who work as Agriculturalists drive a Moskvic.
      19. Pamela and her husband drive a Renault and brought the book “Grandfather Joseph”.
      20. Pamela and her husband borrowed the book that Mr and Mrs Zajac brought.
      21. Robert and his wife like the color yellow and borrowed the book “The Modern Comedy”.
      22. Mr and Mrs Swain work as Shoppers.
      23. “The Modern Comedy” was brought by a couple driving a Skoda.

      Who likes Violet? And can you find out everything about everyone from this?

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      SherlockHolmes Expert Brain Teaser.
      • 1,241.7K views
      • 1 answers
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    • Paradox Monsters Puzzle

      You met three Monsters. One always tells the truth, other one always lies and the last one alternates between lie and truth.
      Monster 1: You may ask us one question, then you must guess which dragon is which
      Monster 2: He is lying. You may get three questions
      Monster 3: Oh no It is definitely one question
      You asked the first Monster a question
      You: What would the second Monster say if you were to ask it if the 3rd dragon had been lying when it agreed with the first one that you could ask only one question
      Monster 1: He’d say, “Yes, the 3rd Monster was lying”
      Then you asked a second question addressing the three Monsters…… But they remained silent.
      And, you solved the puzzle in 90 sec.
      So, which dragon is which?

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      SherlockHolmes Expert Hadest puzzles.
      • 1,240.6K views
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    • Marbles in bottle puzzle

      You have 10 identical bottles of identical marble. Each bottle contain hundred of marbles. Out of 10 bottles 09 have 1 gram of marbles but 01 bottle has marbles of weight of 1.1 gram. Given a measurement scale, how would you find the heavy bottle? You can use the scale only once.

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      SherlockHolmes Expert Math Puzzles.
      • 1,241.5K views
      • 1 answers
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