Showing posts with label play puzzles online. Show all posts

Wednesday, November 19, 2014

Killing Some Time…

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  1. The only animals in this house are cats.
  2. Any animal that loves watching the moon is tamable.
  3. When I hate an animal, I stay away from it.
  4. No animal is carnivorous, unless it moves at night.
  5. No cat avoids killing mice.
  6. I do not own any animal, except the ones that live in this house.
  7. Kangaroos are not tamable.
  8. No animal, except the carnivorous ones, kills mice.
  9. I hate animals that I do not own.
  10. All animals that move at night love watching the moon.
From this sequence of sentences, which are based on the foundations of logic, it is possible to reach a conclusion deduced from all 10 sentences.

What is the conclusion?

Killing Time Puzzle Solution

The logical conclusion must necessarily be: I avoid kangaroos. Based on the 10 statements, it is possible to deduce the following conclusions:
Deduction # From statements # Deduction
11 1 and 5
All animals in this house kill mice
12 8 and 11
All animals in this house are carnivorous
13 4 and 12
All animals in this house move at night
14 6 and 13
All animals I own move at night
15 10 and 14
All animals I own love watching the moon
16 2 and 15
All animals I own are tamable
17 7 and 16
I do not own any kangaroo
18 9 and 17
I hate kangaroos
final 3 and 18
I avoid kangaroos

Wednesday, October 15, 2014

Cheers To Statistics

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Two and a half artists spend two and a half hours painting two and a half models on two and a half canvases.
How many artists are necessary to paint twenty-four models on twenty-four canvases in twenty hours?

Cheers To Statistics Puzzle Solution

Three artist would do the trick. This is because twenty-four artists would paint twenty-four models in two and a half hours. Since the available time increases eight-fold (2.5 * 8 = 20), it is possible to reduce the number of painters by the same number of times (24 / 8 = 3).

Thursday, September 25, 2014

Three Skullcaps

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After being captured by the tribe of the forest, the three explorers were taken to the tribe's chief, who declared that the tribe needed a successor of great wisdom. He showed the captives five skullcaps, three of which were red and the remaining two were green. He commanded the three to line up with their faces toward the wall. On each he placed a red skullcap.

"Now", the chief said, "turn around and look at each other. Whoever can tell me, with a logical explanation, the colour of the skullcap you are wearing will be granted freedom."

The three turned around, looked at each other, and after a long pause one of them said, "I don't know." Two natives impaled him on their spears.

After another pause, the second prisoner stuttered, "I don't know." The two natives threw him into a fire pit.

Immediately, the third man turned a cartwheel, announced, "My skullcap is red," and proceeded to explain.

Amidst the applause of the gathered tribesmen, the chief awarded the explorer vice-chiefdom of the tribe for his wisdom

How did the explorer know that his skullcap was red?

Three Skullcaps Puzzle Solution

At first, any explorer could have guessed the colour of his own skullcap only if the other two wore green skullcaps. Unfortunately, the first explorer admits to not being able to work it out, and is killed.

Then, with two people left it is possible for either explorer to know if he wears a red skullcap only if the other wears green. In that case, he could reason, "The other person wears green, so if I also have a green skullcap, then the first man would have deduced that he was wearing a red skullcap, since there are only two green caps. Therefore my skullcap is, without doubt, red." Of course, this is not the case. Stupidly, the second explorer admits he does not know and is killed as punishment.

After seeing that the other two could not deduce their colours, and believing in their deductive capabilities, the third prisoner was then sure he was wearing a red skullcap.

Monday, February 10, 2014

Sony World Photography Awards 2014 – Best Works

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Here is a collection of an amazing photo gallery of works that were presented at Sony World Photography Awards 2014. Discover and admire these amazing pictures and find other great photography and imagery by solvent online jigsaw puzzles.

Tuesday, December 24, 2013

Types of Puzzles

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Throughout the history there were created and developed various types of puzzles for mind training and memory development skills. These are the most popular ones:
  • Logic puzzles using a chess board, such as Knight's Tour and Eight queens.
  • Mathematical problems such as the missing square puzzle. Many of these are "impossible puzzles", such as the Seven Bridges of Königsberg, Water, gas, and electricity and Three cups problem. See List of impossible puzzles.
  • Picture puzzles, such as sliding puzzles like the fifteen puzzle; jigsaws and variants such as Puzz-3D.
  • Puzzle video game
  • Sangaku
  • Sokoban
  • Spot the difference
  • Tangram
  • Word puzzles, including anagrams, crosswords, word-searches and ciphers.
  • The Anagram Jigsaw is a jigsaw puzzle where pieces are rearranged for two correct solutions.

Friday, September 13, 2013

Interesting Facts on Puzzles History

  • “Legpuzzel” is the dutch name for jigsaw puzzles and tangram-like puzzles.
  • Puzzel represents the most general word, encompassing logical puzzles, crosswords, mechanical puzzles and in general all kind of “problems” to solve.
  • On 18 october 1817 in Paris a booklet with the title “Le Casse-tête Chinois” was published and it was a copy of the English publication ” The Chinese Puzzle”.
  • In italy the etimology of word puzzles weas reflected in Rompicapo- Al Gioco Cinese chiamato il Rompi-Capo” was the title of an 1818 Italian publication.
  • The Spanish Rompecabezas is from some later date, probably introduced as Rompe-Cabezas as one of the titles of French export puzzles.
  • The German name Kopfzerbrecher has been used in 1891 as the name for the Anker tangram puzzle
  • “Chinese puzzles” became in the middle of nineteenth century the name for mechanical puzzles from Asia  - they were made in Japan or India.
  • Unlike word or jigsaw puzzles, mechanical puzzles are hand-held objects that must be manipulated to achieve a specific goal. These puzzles are often referred to as mechanical puzzles, brain teasers, 3D puzzles, mind benders, one person games, or just plain wooden games or wooden toys.