Online Logic Puzzle Games

Logic puzzles are puzzles deriving from the mathematics field of deduction. This branch was created by Charles Lutwidge Dodgson, who is known under Lewis Caroll pseudonym, the one who wrote Alice's Adventures in Wonderland. In his book, "The Game of Logic", he introduced games to solve problems like "Hypothesis: some games are fun & every puzzle is a game. The question is if all puzzles are fun, and the answer is "not necessarily".

This kind of puzzles, where there is given a list of premises and then a question is asked about the things presented in the premises are known as syllogisms. The example mentioned in the previous paragraph is quite simple, because Dodgson constructed much more complex puzzles consisting up to 8 premises.

Later, in the second half of the 20th century, Raymond M. Smullyan has continued developing this branch of logic puzzles and the wrote books like "The Lday of the Tiger" and "To Mock a Mockingbird" and "Alice in Puzzle Land". He made "knights and knaves" puzzles popular; these games involve knights which always tell the truth and knaves, who always lie. There are also logic puzzles which are non-verbal. One popular example is Sudoku, which uses players' deduction skills to correctly fill the squares with numbers.

Another form of these logic puzzles, very popular also is a format in which the scenario is set-up and given, and the object too, and also clues. Then the reader fills out a matrix with all the given clues and attemps to find the solution. This type of puzzle is called "logic grid puzzle" and the most well known example is the Zebra Puzzle, which is called "Who Owned the Zebra?".

A very interesting logic puzzle is the one created by Einstein.Einstein wrote this test and said that 98% of the people can't solve it... Let's hope you are one of the remaining 2%. There's only one solution for this problem.

1. There are 5 houses of 5 different colours.


2. In each house lives a person of a different nationality.


3. Those 5 people drink different drinks, smoke cigarettes of a different brand and have a different pet.


4. None of them has the same pet, smokes the same cigarette or drinks the same drink.

Question: Who has the fish?

Tips:

1. The englishman lives in the red house.


2. The swedish has a dog as a pet.


3. The Dane drinks tea.


4. The green house is at the left side of the white one.


5. The person who lives at the green house drinks coffee.


6. The person who smokes Pall Mall raises birds.


7. The owner of the yellow house smokes Dunhill.


8. The man that lives in the house that is in the middle drinks milk.


9. The norwegian lives in the first house.


10. The man that smokes Blends lives next to the one that has cats.


11. The man that raises horses lives next to the one that smokes Dunhill.


12. The man that smokes Bluemaster drinks beer.


13. The german smokes Prince.


14. The norwegian lives next to the blue house.


15. The man that smokes Blends is neighbour of the one that drinks water.

Let us know if you solved it and tell us also the method you used! Good luck!

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