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Missing Link (puzzle)
Missing Link is a mechanical puzzle invented in 1981 by Steven P. Hanson and Jeffrey D. Breslow. The puzzle has four sides, each depicting a chain of a different color. Each side contains four tiles, except one which contains three tiles and a gap. The top and bottom rows can be rotated, and tiles can slide up or down into the gap. The objective is to scramble the tiles and then restore them to their original configuration. The two middle rows cannot be rotated. To move tiles in these rows, you need to loop the tiles from one row to another, up and down. There are 15 tiles and a gap, giving a maximum of 16! arrangements. However, the middle tiles of each four-tile chain are identical, and each position is equivalent to seven other positions obtained by rotating the entire puzzle (about its axis or upside-down), reducing the number of arrangements to 16! / 8 / 8 = 326,918,592,000. If the three long chains are also considered interchangeable, then the number of arrangements is fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missing Link Puzzle
Missing or The Missing may refer to: Film *Missing (1918 film), ''Missing'' (1918 film), an American silent drama directed by James Young *Missing (1982 film), ''Missing'' (1982 film), an American historical drama directed by Costa-Gavras about the 1973 coup in Chile *, a Belgian film that was a List of 2007 box office number-one films in Belgium, 2007 box office number-one film in Belgium *''Missing'', a 2007 film featuring Nao Ōmori *Missing (2008 film), ''Missing'' (2008 film), a Hong Kong horror film directed by Tsui Hark *, a South Korean film directed by Kim Sung-hong *Missing (2009 short film), ''Missing'' (2009 short film), a film starring Susan Glover *Missing (2010 film), ''Missing'' (2010 film), a List of Jordanian films, Jordanian film directed by Tariq Rimawi *Missing (2016 film), ''Missing'' (2016 film), a South Korean film directed by Lee Eon-hee *Missing (2018 film), ''Missing'' (2018 film), an Indian film directed by Mukul Abhyankar *Missing (2019 film), ''Missing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Puzzle
A mechanical puzzle is a puzzle presented as a set of mechanically interlinked pieces in which the solution is to manipulate the whole object or parts of it. While puzzles of this type have been in use by humanity as early as the 3rd century BC, one of the most well-known mechanical puzzles of modern day is the Rubik's Cube, invented by the Hungarian architect Ernő Rubik in 1974. The puzzles are typically designed for a single player, where the goal is for the player to discover the principle of the object, rather than accidentally coming up with the right solution through trial and error. With this in mind, they are often used as an intelligence test or in problem solving training. History The oldest known mechanical puzzle comes from Greece and appeared in the 3rd century BC. The game consists of a square divided into 14 parts, and the aim was to create different shapes from these pieces. This is not easy to do. (see Ostomachion loculus Archimedius) In Iran "puzzle-locks" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Games (magazine)
''Games World of Puzzles'' is an American games and puzzle magazine. Originally the merger of two other puzzle magazines spun off from its parent publication ''Games'' magazine in the early 1990s, ''Games World of Puzzles'' was reunited with ''Games'' in October 2014. The entire magazine interior is now newsprint (as opposed to the part-glossy/part-newsprint format of the original ''Games'') and the puzzles and articles that originally sandwiched the "Pencilwise" section are now themselves sandwiched ''by'' the main puzzle pages, replacing the "feature puzzle" section (they are still full-color, unlike the two-color "Pencilwise" sections.) The recombined title assumed the same 9-issue-per-year publication schedule as the original ''Games''. ''Games'' ''Games'' () was a magazine devoted to games and puzzles and, until its 2014 merger was published by Games Publications, a division of Kappa Publishing Group. History ''Games'' debuted with its September/October 1977 issue, publi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combination Puzzles
In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations). For example, given three fruits, say an apple, an orange and a pear, there are three combinations of two that can be drawn from this set: an apple and a pear; an apple and an orange; or a pear and an orange. More formally, a ''k''-combination of a set ''S'' is a subset of ''k'' distinct elements of ''S''. So, two combinations are identical if and only if each combination has the same members. (The arrangement of the members in each set does not matter.) If the set has ''n'' elements, the number of ''k''-combinations, denoted by C(n,k) or C^n_k, is equal to the binomial coefficient \binom nk = \frac, which can be written using factorials as \textstyle\frac whenever k\leq n, and which is zero when k>n. This formula can be derived from the fact that each ''k''-combination of a set ''S'' of ''n'' members has k! permutati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Puzzles
A mechanical puzzle is a puzzle presented as a set of mechanically interlinked pieces in which the solution is to manipulate the whole object or parts of it. While puzzles of this type have been in use by humanity as early as the 3rd century BC, one of the most well-known mechanical puzzles of modern day is the Rubik's Cube, invented by the Hungarian architect Ernő Rubik in 1974. The puzzles are typically designed for a single player, where the goal is for the player to discover the principle of the object, rather than accidentally coming up with the right solution through trial and error. With this in mind, they are often used as an intelligence test or in problem solving training. History The oldest known mechanical puzzle comes from Greece and appeared in the 3rd century BC. The game consists of a square divided into 14 parts, and the aim was to create different shapes from these pieces. This is not easy to do. (see Ostomachion loculus Archimedius) In Iran "puzzle-lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980s Toys
__NOTOC__ Year 198 (CXCVIII) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Sergius and Gallus (or, less frequently, year 951 ''Ab urbe condita''). The denomination 198 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire *January 28 **Publius Septimius Geta, son of Septimius Severus, receives the title of Caesar. **Caracalla, son of Septimius Severus, is given the title of Augustus. China *Winter – Battle of Xiapi: The allied armies led by Cao Cao and Liu Bei defeat Lü Bu; afterward Cao Cao has him executed. By topic Religion * Marcus I succeeds Olympianus as Patriarch of Constantinople (until 211). Births * Lu Kai, Chinese official and general (d. 269) * Quan Cong, Chinese general and advisor (d. 249) Deaths * Li Jue, Chinese warlord and rege ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1981 Introductions
Events January * January 1 ** Greece enters the European Economic Community, predecessor of the European Union. ** Palau becomes a self-governing territory. * January 6 – A funeral service is held in West Germany for Nazi Grand Admiral Karl Doenitz following his death on December 24. * January 10 – Salvadoran Civil War: The FMLN launches its first major offensive, gaining control of most of Morazán and Chalatenango departments. * January 15 – Pope John Paul II receives a delegation led by Polish Solidarity leader Lech Wałęsa at the Vatican. * January 20 – Iran releases the 52 Americans held for 444 days, minutes after Ronald Reagan is sworn in as the 40th President of the United States, ending the Iran hostage crisis. * January 21 – The first DeLorean automobile, a stainless steel sports car with gull-wing doors, rolls off the production line in Dunmurry, Northern Ireland. * January 24 – An earthquake of magnitude in Sichuan, China, kills 150 people. J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
