Thomas Snyder (born c. 1980)is an American puzzle creator and world-champion sudoku and logic puzzle solver. He is the first person to win both the World Sudoku Championship (3 times) and the World Puzzle Championship. Snyder writes a puzzle blog as Dr. Sudoku.
The United States of America (USA), commonly known as the United States or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the most populous city is New York City. Most of the country is located contiguously in North America between Canada and Mexico.
Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contain all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.
The World Sudoku Championship (WSC) is an annual international puzzle competition organised by a member of the World Puzzle Federation. The first event was held in Lucca in 2006. National teams are determined by local affiliates of the World Puzzle Federation. The competition typically consists of 100 or more puzzles solved by all competitors over multiple timed rounds, including classic sudoku, variations and other puzzle types, normally followed by a playoff for the top qualifiers to determine a champion. Examples of rounds include the Relay round, where an answer from one puzzle contributes digits to the start of the next sudoku, and the "World Record" round, in which solvers competed to set a Guinness World Record for fastest sudoku solution.
Thomas Snyder grew up in the suburbs of Buffalo, New York.He attended Amherst Central High School before getting chemistry degrees from the California Institute of Technology and Harvard University and doing post-doctoral work at Stanford University's bioengineering department.
Buffalo is the second largest city in the U.S. state of New York and the largest city in Western New York. As of 2018, the population was 256,304. The city is the county seat of Erie County and a major gateway for commerce and travel across the Canada–United States border, forming part of the bi-national Buffalo Niagara Region.
Amherst Central High School (ACHS) is a public high school in Snyder, New York, a hamlet within the town of Amherst, which is within the Buffalo-Niagara Falls metropolitan area. It is the only high school in the Amherst Central School District. Its enrollment is approximately 802 students. The school opened in 1931; construction on the current building began in 1929.
The California Institute of Technology (Caltech) is a private doctorate-granting research university in Pasadena, California. Known for its strength in natural science and engineering, Caltech is often ranked as one of the world's top-ten universities.
Thomas Snyder has contributed puzzles to various puzzle-related publications including GAMES Magazine and Wired. He has also written puzzles for events including the World Sudoku Championship, U.S. Puzzle Championship, the MIT Mystery Hunt, Gen Con, and the Microsoft Puzzle Picnic.
Wired is a monthly American magazine, published in print and online editions, that focuses on how emerging technologies affect culture, the economy, and politics. Owned by Condé Nast, it is headquartered in San Francisco, California, and has been in publication since March/April 1993. Several spin-offs have been launched, including Wired UK, Wired Italia, Wired Japan, and Wired Germany. Condé Nast's parent company Advance Publications is also the major shareholder of Reddit, an internet information conglomeration website.
The MIT Mystery Hunt is an annual puzzlehunt competition at the Massachusetts Institute of Technology. As one of the oldest and most complex puzzlehunts in the world, it attracts roughly 60 teams and 2,500 contestants annually in teams of 5 to 200 people. It has inspired similar competitions at Microsoft, Stanford University, Melbourne University, University of South Carolina, University of Illinois at Urbana–Champaign and University of Aveiro (Portugal) as well as in the Seattle, San Francisco, Miami, Washington, D.C., Indianapolis and Columbus, Ohio metropolitan areas. Because the puzzle solutions require knowledge of esoteric and eclectic topics, the hunt is often fused with popular stereotypes of MIT students.
Gen Con is the largest tabletop-game convention in North America by both attendance and number of events. It features traditional pen-and-paper, board, and card games, including role-playing games, miniatures wargames, live action role-playing games, collectible card games, and strategy games. Gen Con also features computer games. Attendees engage in a variety of tournament and interactive game sessions. In 2015, Gen Con had 61,423 unique attendees, making it one of the largest conventions in North America.
In early 2012, Snyder began his publishing company Grandmaster Puzzles. On April 9, 2012, he began selling his first title from the newly formed company, The Art of Sudoku. On December 31, 2012, Snyder began the newest version of his puzzle blog The Art of Puzzles coinciding with the relaunch of his Grandmaster Puzzles web site.
Snyder holds several puzzle-solving titles as well, with his 2006 U.S. Puzzle Championship win being the earliest. Snyder has represented the United States ten times at the World Puzzle Championship, including six times when the US won the team competition (2006-8, 2010-11, 2013). He was the top individual at the 27th World Puzzle Championship held in Prague in November 2018.
The World Puzzle Championship is an annual international puzzle competition run by the World Puzzle Federation. All the puzzles in the competition are pure-logic problems based on simple principles, designed to be playable regardless of language or culture.
Prague is the capital and largest city in the Czech Republic, the 14th largest city in the European Union and the historical capital of Bohemia. Situated on the Vltava river, Prague is home to about 1.3 million people, while its metropolitan area is estimated to have a population of 2.6 million. The city has a temperate oceanic climate, with relatively warm summers and chilly winters.
Rubik's Cube is a 3-D combination puzzle invented in 1974 by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the Magic Cube, the puzzle was licensed by Rubik to be sold by Ideal Toy Corp. in 1980 via businessman Tibor Laczi and Seven Towns founder Tom Kremer and won the German Game of the Year special award for Best Puzzle that year. As of January 2009, 350 million cubes had been sold worldwide, making it the world's top-selling puzzle game. It is widely considered to be the world's best-selling toy.
A puzzle is a game, problem, or toy that tests a person's ingenuity or knowledge. In a puzzle, the solver is expected to put pieces together in a logical way, in order to arrive at the correct or fun solution of the puzzle. There are different genres of puzzles, such as crossword puzzles, word-search puzzles, number puzzles, relational puzzles, or logic puzzles.
Kakuro or Kakkuro is a kind of logic puzzle that is often referred to as a mathematical transliteration of the crossword. Kakuro puzzles are regular features in many math-and-logic puzzle publications across the world. In 1966, Canadian Jacob E. Funk, an employee of Dell Magazines, came up with the original English name Cross Sums and other names such as Cross Addition have also been used, but the Japanese name Kakuro, abbreviation of Japanese kasan kurosu, seems to have gained general acceptance and the puzzles appear to be titled this way now in most publications. The popularity of Kakuro in Japan is immense, second only to Sudoku among Nikoli's famed logic-puzzle offerings.
Sergey Alexandrovich Karjakin is a Russian chess grandmaster. A chess prodigy, he holds the record for the world's youngest ever grandmaster, having qualified for the title at the age of 12 years and 7 months.
Nguyễn Ngọc Trường Sơn is a Vietnamese chess player. He is the youngest Vietnamese ever to become a Grandmaster, and one of the youngest grandmasters in the history of the game, having qualified for the title at the age of fourteen.
Wayne Gould (高樂德法官) is a retired Hong Kong judge, most recently known for helping to popularise sudoku puzzles in the United Kingdom, and thereafter in the United States.
Terry Stickels is the author of numerous puzzle books, calendars, card decks and posters featuring critical thinking skills. Born in Omaha, Nebraska, he is the oldest of three children. Stickels is a lifelong member of Mensa, One In A Thousand Society and The International High IQ Society and the Epimetheus Society. He currently resides in Fort Worth, Texas.
Puzzle Series is a series of puzzle video games by Hudson Soft.
Norman "Trip" Payne is an American professional puzzle maker. He is known by many as a three-time champion of the American Crossword Puzzle Tournament (ACPT). With his first victory in 1993, at the age of 24, Payne became the youngest champion ever in the tournament's history, a record he held until 2005.
The Philadelphia Inquirer Sudoku National Championship, hosted by puzzle master Will Shortz, was an annual sudoku competition run by The Philadelphia Inquirer and held at the Pennsylvania Convention Center in 2007-2009.
Robert Michael Snyder is an American author.
Feliks Aleksanders Zemdegs is an Australian Rubik's Cube speedsolver. He is the only speedcuber to ever win the World Cube Association World Championship twice.
Samuel L. Shankland is an American chess grandmaster. He won the U.S. Chess Championship in 2018.
Nazi Paikidze, sometimes also referred to as Paikidze-Barnes, is a Georgian American chess player. She holds the titles of International Master (IM) and Woman Grandmaster (WGM), which FIDE awarded her in 2012 and 2010 respectively. Paikidze was twice world girls' champion and four-time European girls' champion in her age category, and is a twice U.S. women's champion.
Rohan Rao, who goes by the name vopani, is an Indian sudoku and puzzle solver, widely considered as the best sudoku solver of India. He is the reigning National Sudoku Champion and Times National Sudoku Champion. Rao has won 16 national championships and has been one of the best Indians at the World Sudoku Championship (WSC), World Puzzle Championship (WPC) and Asian Sudoku Championship (ASC). He won the Indian Sudoku Championship seven times, in 2010, 2011, 2012, 2016, 2017, 2018, 2019, the Indian Puzzle Championship five times, in 2010, 2011, 2012, 2015, 2017. and the Times National Sudoku Championship four times, in 2012, 2015, 2016, 2019.
The Indian Sudoku Championship is an annual national contest held in India to crown the Indian Sudoku Champion and to select the national team for the Asian Sudoku Championship and World Sudoku Championship. It usually consists of multiple rounds of solving various classic sudoku and its variants, and the scores of players are aggregated for the final rankings. It is conducted by Logic Masters India, which is the Indian affiliate of the World Puzzle Federation.
Rishi Puri is an Indian Sudoku solver. He is a two time Indian National Sudoku Champion. He was part of the top three from India along with Rohan Rao and Prasanna Seshadri at the national championships and the World Sudoku Championships. Rishi won the Indian Sudoku Championships in 2014 and 2015. He also won the Times Sudoku Championship in 2013.
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