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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.
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.
Lucca is a city and comune in Tuscany, Central Italy, on the Serchio, in a fertile plain near the Tyrrhenian Sea. It is the capital of the Province of Lucca. It is famous for its intact Renaissance-era city walls.
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.
Of the 13 championships held so far, Kota Morinishi of Japan (2014, 2015, 2017 and 2018) has been the most successful winners with four individual titles each, succeeded to Thomas Snyder of United States (2007, 2008 and 2011), Jan Mrozowski of Poland (2009, 2010 and 2012) who have won three.
Japan is an island country in East Asia. Located in the Pacific Ocean, it lies off the eastern coast of the Asian continent and stretches from the Sea of Okhotsk in the north to the East China Sea and the Philippine Sea in the south.
Thomas Snyder 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 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's 3.9 million square miles. 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. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.
From 2007 there has also been a team competition. Japan is the most successful team, having won the title in 2007, 2012, 2014, 2015 and 2018; Czech Republic (2008, 2016), Germany (2010 and 2011) and China (2013, 2017) have won this title twice; Slovakia (2009) also won a title.
The Czech Republic, also known by its short-form name, Czechia, is a country in Central Europe bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the northeast. The Czech Republic has a landlocked and hilly landscape that covers an area of 78,866 square kilometers (30,450 sq mi) with a mostly temperate continental climate and oceanic climate. It is a unitary parliamentary republic, with 10.6 million inhabitants. Its capital and largest city is Prague, with 1.3 million residents; other major cities are Brno, Ostrava, Olomouc and Pilsen.
Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps, Lake Constance and the High Rhine to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.
China, officially the People's Republic of China (PRC), is a country in East Asia and the world's most populous country, with a population of around 1.404 billion. Covering approximately 9,600,000 square kilometers (3,700,000 sq mi), it is the third- or fourth-largest country by total area. Governed by the Communist Party of China, the state exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities, and the special administrative regions of Hong Kong and Macau.
Starting from 2011, the event has been held alongside the World Puzzle Championship.
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.
Currently, 30 countries are official members of the World Puzzle Federation. Individuals may also take part if their country is not already represented by a national team.In the latest WSC in 2018 Prague Czech Republic the number of participants exceeded the magic limit (248 contestants from 34 countries).
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 in the north-west of the country on the Vltava river, the city 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 climate, with warm summers and chilly winters.
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Starting from 2013, titles have been awarded also for the best players in two age groups, Under 18 and Over 50 years of age.
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The Dissolution of Czechoslovakia, which took effect on 1 January 1993, was an event that saw the self-determined split of the federal state of Czechoslovakia into the independent countries of the Czech Republic and Slovakia. These entities had arisen before as the Czech Socialist Republic and the Slovak Socialist Republic in 1969 within the framework of a federal republic.
Footballtennis, also known as futnet is a sport originating in the 1920s in Czechoslovakia. It is a ball game that can be played indoors or outdoors in a court divided by a low net with two opposing teams who try to score a point hitting the ball with any part of their body except for the hands and making it bounce in the opponent's area in a way that makes it difficult or impossible for the other team to return it over the net.
The 2005 Men's Ice Hockey Championships were held March 7 - May 15, 2005, in 7 cities in 6 countries: Vienna and Innsbruck, Austria (Championship); Debrecen, Hungary ; Eindhoven, the Netherlands ; Zagreb, Croatia ; Belgrade, Serbia and Montenegro ; Mexico City, Mexico. The competition also served as qualification for division placements in the 2006 competition. It was a major professional tournament, because of the 2004 NHL labor dispute. This international event was the 69th such event sanctioned by the International Ice Hockey Federation (IIHF). The championship was won by the Czech Republic.
The 2006 Men's World Ice Hockey Championships was the 70th such event hosted by the International Ice Hockey Federation. Teams representing 45 countries participated in four levels of competition. The competition also served as qualifications for division placements in the 2007 competition. In the Division I Championship held in April, Germany and Austria were promoted to the Championship division while Israel and Croatia were demoted to Division II. In the Division II competition, Romania and China were promoted, South Africa and New Zealand were relegated to Division III. In the Division III competition, Iceland and Turkey were promoted to Division II for 2007.
Tomáš Verner is a Czech figure skater. He is the 2008 European champion, a medalist at two other European Championships, and a ten-time Czech national champion. He has won six senior Grand Prix medals, including the 2010 Cup of Russia title.
Lucie Myslivečková is a Czech and Slovak former competitive ice dancer. Representing Slovakia with Lukáš Csölley, she competed at the 2018 Winter Olympics in Pyeongchang, South Korea. Earlier in her career, she represented the Czech Republic with Matěj Novák and Neil Brown. With Novák, she is the 2010 Golden Spin of Zagreb champion and the 2011 Czech national champion.
The Hlinka Gretzky Cup is an annual international under-18 ice hockey tournament administered by Canada, the Czech Republic, and Slovakia's ice hockey federations. Held since 1991, it has been contested under various titles and in various countries, including Japan, Mexico, and Canada. From 1997 through 2017, hosting duties for the event alternated between, and were later split between, the Czech Republic and Slovakia. During this period, the event was known as the Nations Cup, the U-18 Junior World Cup, and Ivan Hlinka Memorial Tournament. From 2018 through 2022, the tournament will alternate between Edmonton, Canada and Czech Republic/Slovakia.
Sports play a significant part in the life of many Czechs who are generally loyal supporters of their favourite teams or individuals.
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.
The 2015 Men's World Ice Hockey Championships was the 79th such event hosted by the International Ice Hockey Federation. Teams participated at several levels of competition, which also served as qualification for division placements in the 2016 Men's World Ice Hockey Championships and to finalize seeding for 2018 Winter Olympics qualification.
The European Go Championship or Congress (EGC) is the annual and main event of many organised by the European Go Federation for players of the board game Go. It consists of a 2-week open competition, one round per day, making a total of 10 rounds with a champion ultimately emerging - the player with the most wins. The congress has taken place in a different European city each year, since the first contest in 1983. During these two weeks, the best Go players in Europe fight for the title of European Champion. Entry in recent years has been from a low of 290 to a high of 718 players.
The Ball Hockey World Championship is a biannual ball (street) hockey competition for women's and men's national teams. The first women's world championships were played in 2007. The first championship was played in 1996 in Bratislava. Since the beginning of the best teams in Canada, the Czech Republic and Slovakia. The first team to win a medal in addition to Canada, the Czech Republic and Slovakia, the team of Italy in 2005 when he won the bronze medal match against Portugal. Since 1999 championship played every two years. Ball Hockey World Championship is organized by ISBHF.
The 2015 IIHF World Championship was the 79th event hosted by the International Ice Hockey Federation (IIHF), held in Prague and Ostrava, Czech Republic, between 1–17 May 2015. The tournament was the top division of the 2015 Men's World Ice Hockey Championships. It broke the historical attendance record of IIHF World Championships.
Rohan Rao is an Indian sudoku and puzzle solver, widely considered as the best sudoku solver of India. He is a 14-time national champion 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 six times, in 2010, 2011, 2012, 2016, 2017, 2018 and the Indian Puzzle Championship five times, in 2010, 2011, 2012, 2015, 2017. He also won the Times National Sudoku Championship three times, in 2012, 2015, 2016.
Tamás Molnár is a powerlifter and world champion. From 1997, he joined the junior and senior national team, and topped national records several times in deadlift. From 2012, he is a professional sportsman and in 2014, he garnered the first place in Argentina at the GPC World Championship.
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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Philadelphia, known colloquially as Philly, is the largest city in the U.S. state and Commonwealth of Pennsylvania, and the sixth-most populous U.S. city, with a 2018 census-estimated population of 1,584,138. Since 1854, the city has been coterminous with Philadelphia County, the most populous county in Pennsylvania and the urban core of the eighth-largest U.S. metropolitan statistical area, with over 6 million residents as of 2017. Philadelphia is also the economic and cultural anchor of the greater Delaware Valley, located along the lower Delaware and Schuylkill Rivers, within the Northeast megalopolis. The Delaware Valley's population of 7.2 million ranks it as the eighth-largest combined statistical area in the United States.
Žilina is a city in north-western Slovakia, around 200 kilometres (120 mi) from the capital Bratislava, close to both the Czech and Polish borders. It is the fourth largest city of Slovakia with a population of approximately 80,000, an important industrial center, the largest city on the Váh river, and the seat of a kraj and of an okres. It belongs to the Upper Váh region of tourism.
Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's territory spans about 49,000 square kilometres (19,000 sq mi) and is mostly mountainous. The population is over 5.4 million and consists mostly of Slovaks. The capital and largest city is Bratislava, and the second-largest city is Košice. The official language is Slovak.
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