Kalah, also called Kalaha or Mancala, is a game in the mancala family invented in the United States by William Julius Champion, Jr. in 1940. This game...
Kalah, also called Kalaha or Mancala, is a game in the mancala family invented in the United States by William Julius Champion, Jr. in 1940. This game is sometimes also called "Kalahari", possibly by false etymology from the Kalahari desert in Namibia.
As the most popular and commercially available variant of mancala in the West, Kalah is also sometimes referred to as Warri or Awari, although those names more properly refer to the game Oware.
For most of its variations, Kalah is a solved game with a first-player win if both players play perfect games. The Pie rule can be used to balance the first-player's advantage.
Mark Rawlings has written a computer program to extensively analyze both the "standard" version of Kalah and the "empty capture" version, which is the primary variant. The analysis was made possible by the creation of the largest endgame databases ever made for Kalah. They include the perfect play result of all 38,902,940,896 positions with 34 or fewer seeds. In 2015, for the first time ever, each of the initial moves for the standard version of Kalah(6,4) and Kalah(6,5) have been quantified: Kalah(6,4) is a proven win by 8 for the first player and Kalah(6,5) is a proven win by 10 for the first player. In addition, Kalah(6,6) with the standard rules has been proven to be at least a win by 4. Further analysis of Kalah(6,6) with the standard rules is ongoing.
For the "empty capture" version, Geoffrey Irving and Jeroen Donkers (2000) proved that Kalah(6,4) is a win by 10 for the first player with perfect play, and Kalah(6,5) is a win by 12 for the first player with perfect play. Anders Carstensen (2011) proved that Kalah(6,6) was a win for the first player. Mark Rawlings (2015) has extended these "empty capture" results by fully quantifying the initial moves for Kalah(6,4), Kalah(6,5), and Kalah(6,6). With searches totaling 106 days and over 55 trillion nodes, he has proven that Kalah(6,6) is a win by 2 for the first player with perfect play. This was a surprising result, given that the "4-seed" and "5-seed" variations are wins by 10 and 12, respectively. Kalah(6,6) is extremely deep and complex when compared to the 4-seed and 5-seed variations, which can now be solved in a fraction of a second and less than a minute, respectively.
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SIMON
Simon is an electronic game of memory skill invented by Ralph H. Baer and Howard J. Morrison, working for toy design firm Marvin Glass and Associates,...
Simon is an electronic game of memory skill invented by Ralph H. Baer and Howard J. Morrison, working for toy design firm Marvin Glass and Associates, with software programming by Lenny Cope. The device creates a series of tones and lights and requires a user to repeat the sequence. If the user succeeds, the series becomes progressively longer and more complex. Once the user fails or the time limit runs out, the game is over. The original version was manufactured and distributed by Milton Bradley and later by Hasbro after it took over Milton Bradley. Much of the assembly language code was written by Charles Kapps, who taught computer science at Temple University and also wrote one of the first books on the theory of computer programming. Simon was launched in 1978 at Studio 54 in New York City and was an immediate success, becoming a pop culture symbol of the 1970s and 1980s.
Ralph H. Baer and Howard J. Morrison were introduced to Atari's arcade game Touch Me at the Music Operators of America (MOA) trade show in 1976. Baer said of the product, "Nice gameplay. Terrible execution. Visually boring. Miserable, rasping sounds." The prototype built by Baer used the low cost Texas Instruments TMS 1000 microcontroller chip, which was in many games of the 1970s. Lenny Cope, who was one of Ralph H. Baer's partners, programmed the core of the game, titled Follow Me at the time. Baer developed the tones of the game, inspired by the notes of a bugle. When they pitched the demo, an 8-by-8-inch console, to the Milton Bradley Company the name of the game was changed to Simon. Simon debuted in 1978 at a retail price of $24.95 (equivalent to $98 in 2019) and became one of the top-selling toys that Christmas. U.S. Patent 4,207,087: "Microcomputer controlled game", was granted in 1980. Milton Bradley soon capitalized on the original with both the smaller-sized Pocket Simon and the expanded, eight-button Super Simon.
Many variants of Simon have been made since Hasbro acquired Milton Bradley in the 1980s, building on the possibilities offered by advances in technology. The original Super Simon was reinvented in the late 1990s as a hexagonal unit with six buttons. 2000 saw Simon Squared (or Simon2), a unit with the four traditional buttons on one side, and a set of eight smaller buttons on the other. In 2004, Hasbro released the Simon Stix. The game features two electronic sticks (modeled after drumsticks), an emphasis on the musical part of the game, and features four levels of play.
In 2005, Hasbro released Simon Trickster (also known as Simon Tricks in Europe and in the UK, and as Simon Genius in Brazil), which features four game modes, in a similar fashion to another Hasbro game, Bop It, and colored lenses instead of buttons. "Simon Classic" mode plays up to 35 tones(notes). "Simon Bounce" is similar to "Simon Classic", but instead the colors of the lenses change. "Simon Surprise" is one of the most difficult games in the unit. Every lens becomes the same color and the player has to memorize the location. "Simon Rewind" requires the player to memorize the sequence backwards. During each game, the player is paid a compliment after a certain number of tones completed. On reaching five and eleven tones, the computer will randomly choose "Awesome!", "Nice!", "Sweet!" or "Respect!". On reaching 18 tones, the game will play a victory melody three times. On reaching the ultimate 35 tones, the game will play the victory melody again and will say "Respect!". If the player fails to memorize the pattern or fails to press the right color within the time limit, the game will play a crashing sound and the game will say "Later!".
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