The long jump is an athletics (track and field) event in which athletes combine speed, strength, and agility in an attempt to leap as far from the take-off point as possible.Competitors sprint down a runway (usually coated with the same rubberized surface as running tracks, crumb rubber also vulcanized rubber) and jump as far as they can from behind a foul line (commonly referred to as the "board", and usually defined by the trailing edge of a takeoff board embedded flush with the runway surface, or a painted mark on the runway) into a pit filled with finely ground gravel or sand. The distance traveled by a jumper is often referred to as the "mark" because it is the distance to the nearest mark made in the sand from the foul line. If the competitor starts the leap with any part of the foot past the foul line, the jump is declared illegal and no distance is recorded. At the elite level, a layer of plasticine is placed immediately after the board to detect this occurrence.
Otherwise, an official (similar to a referee) will observe the jump and make the determination. The competitor can initiate the jump from any point behind the foul line; however, the distance measured will always be from the foul line. Therefore, it is in the best interest of the competitor to get as close to the foul line as possible.
Usually, each competitor has a set number of attempts to make his or her longest jump, and only the longest legal jump counts towards the results. Typically, competitors have three trial jumps with which to make their best effort. Higher level competitions are split into two rounds: trials and finals. In competitions containing a final round, only a select number of competitors are invited to return for further competition. The number of competitors chosen to return to the final round is determined before the start of the meet by a committee composed of coaches and officials. It is standard practice to allow one more competitor than the number of scoring positions to return to the final round. For example, if a given meet allows the top eight competitors to score points, then the top nine competitors will be selected to compete in the final round. Taking an extra competitor to the final round helps to allow that athlete to move into a scoring position if the competitor can improve on his or her best mark of the competition. Final rounds are viewed as an additional three jumps, as they do not have any priority to those scored in the trial round. The competitor with the longest legal jump (from either the trial or final rounds) at the end of competition is declared the winner. (For specific rules and regulations in United States Track & Field see Rule 185[1]).
There are four main components of the long jump: the approach run, the last two strides, takeoff and action in the air, and landing. Speed in the run-up, or approach, and a high leap off the board are the fundamentals of success. Because speed is such an important factor of the approach, it is not surprising that many long jumpers also compete successfully in sprints. A classic example of this long jump / sprint doubling is performances by Carl Lewis.The long jump is notable for two of the longest-standing world records in any track and field event. In 1935, Jesse Owens set a long jump world record that was not broken until 1960 by Ralph Boston. Later, Bob Beamon jumped 8.90 meters (29 feet, 2-1/2 inches) at the 1968 Summer Olympics at an altitude of 7,349 feet, a jump not exceeded until 1991. On The current world record for women is held by Galina Chistyakova of the former Soviet Union who leapt 7.52 m (24.7 ft) in Leningrad in 1988.
Sunday, May 24, 2009
High Jump
The high jump is a track and field athletics event in which competitors must jump over a horizontal bar placed at measured heights without the aid of any devices. It has been contested since the Olympic Games of ancient Greece. Over the centuries since, competitors have introduced increasingly more effective techniques to arrive at the current form. Javier Sotomayor (Cuba) is both the indoor and outdoor world record holder in this event with jumps of 2.43 metres (7 ft 11.67 in) and 2.45 metres (8 ft 0.46 in), respectively. Sotomayor's record, set in 1993, is the longest standing in the history of the men's high jump. Stefka Kostadinova (Bulgaria) has held the women's world record 2.09 metres (6 ft 10.28 in) since 1987, the longest-held record in the event.
The first recorded high jump event took place in Scotland in the 19th century. Early jumpers used either an elaborate straight-on approach or a scissors technique. In the latter, the bar was approached diagonally, and the jumper threw first the inside leg and then the other over the bar in a scissoring motion. Around the turn of the 20th century, techniques began to modernise, starting with the Irish-American M.F. Sweeney's Eastern cut-off. By taking off as if with the scissors, but extending his back and flattening out over the bar, the Sweeney achieved a more economic clearance and raised the world record to 6 feet 5.625 inches (1.97 m) in 1895.
Another American, M.F. Horine, developed an even more efficient technique, the Western roll. In this style, the bar again is approached on a diagonal, but the inner leg is used for the take-off, while the outer leg is thrust up to lead the body sideways over the bar. Horine increased the world standard to 6 feet 7 inches (2.0 m) in 1912. His technique predominated through the Berlin Olympics of 1936, in which the event was won by Cornelius Johnson at 2.03 metres (6 ft 8 in).
American and Russian jumpers held the playing field for the next four decades, and they pioneered the evolution of the straddle technique. Straddle jumpers took off as in the Western roll, but rotated their (belly-down) torso around the bar, obtaining the most economical clearance up to that time. Straddle-jumper Charles Dumas broke the elusive 7 feet (2.13 m) barrier in 1956, and American John Thomas pushed the world mark to 2.23 metres (7 ft 4 in) in 1960. Valeriy Brumel took over the event for the next four years. The elegant Soviet jumper radically sped up his approach run, took the record up to 2.28 metres (7 ft 6 in), and won the Olympic gold medal in 1964, before a motorcycle accident ended his career.
High jump shoes are different from most other track shoes in that there are an additional four holes in the heel of the takeoff shoe, where the user can insert spikes for increased traction. These extra heel spikes aid greatly in the last four to five steps of the J-approach, allowing the jumper to run on his or her curve at a fast speed without slipping. Some high jump shoes are even more technologically developed and in addition to the extra spikes on the heel, the shoes are modified to lean the direction of the approach to provide further support while running their curve. As well as the approach, high jump shoes also help and support the jumper's takeoff. The IAAF regulations specify a maximum sole thickness for both high jump and long jump shoes; competitors in all other events may wear shoes with soles of any thickness.
The first recorded high jump event took place in Scotland in the 19th century. Early jumpers used either an elaborate straight-on approach or a scissors technique. In the latter, the bar was approached diagonally, and the jumper threw first the inside leg and then the other over the bar in a scissoring motion. Around the turn of the 20th century, techniques began to modernise, starting with the Irish-American M.F. Sweeney's Eastern cut-off. By taking off as if with the scissors, but extending his back and flattening out over the bar, the Sweeney achieved a more economic clearance and raised the world record to 6 feet 5.625 inches (1.97 m) in 1895.
Another American, M.F. Horine, developed an even more efficient technique, the Western roll. In this style, the bar again is approached on a diagonal, but the inner leg is used for the take-off, while the outer leg is thrust up to lead the body sideways over the bar. Horine increased the world standard to 6 feet 7 inches (2.0 m) in 1912. His technique predominated through the Berlin Olympics of 1936, in which the event was won by Cornelius Johnson at 2.03 metres (6 ft 8 in).
American and Russian jumpers held the playing field for the next four decades, and they pioneered the evolution of the straddle technique. Straddle jumpers took off as in the Western roll, but rotated their (belly-down) torso around the bar, obtaining the most economical clearance up to that time. Straddle-jumper Charles Dumas broke the elusive 7 feet (2.13 m) barrier in 1956, and American John Thomas pushed the world mark to 2.23 metres (7 ft 4 in) in 1960. Valeriy Brumel took over the event for the next four years. The elegant Soviet jumper radically sped up his approach run, took the record up to 2.28 metres (7 ft 6 in), and won the Olympic gold medal in 1964, before a motorcycle accident ended his career.
High jump shoes are different from most other track shoes in that there are an additional four holes in the heel of the takeoff shoe, where the user can insert spikes for increased traction. These extra heel spikes aid greatly in the last four to five steps of the J-approach, allowing the jumper to run on his or her curve at a fast speed without slipping. Some high jump shoes are even more technologically developed and in addition to the extra spikes on the heel, the shoes are modified to lean the direction of the approach to provide further support while running their curve. As well as the approach, high jump shoes also help and support the jumper's takeoff. The IAAF regulations specify a maximum sole thickness for both high jump and long jump shoes; competitors in all other events may wear shoes with soles of any thickness.
Javelin throw
The javelin throw is a track and field athletics throwing event where the object to be thrown is the javelin, a spear approximately 2.5 meters in length. Javelin is an event of both the men's decathlon and the women's heptathlon.The size, shape, minimum weight, and center of gravity of the javelin implement itself are all defined by IAAF rules. In international competition, men throw a javelin between 2.6 and 2.7 meters in length and (at least) 800 grams in weight, and women throw a javelin between 2.2 and 2.3 meters in length and (at least) 600 grams in weight. The javelin is equipped with a grip, approximately 150 mm wide, made of cord and located at the javelin's center of gravity (0.9 to 1.06 meters or 0.8 to 0.92 meters from the tip of the javelin for men's and women's implements, respectively).
Unlike the other throwing events (shotput, discus, and hammer), the technique used to throw the javelin is dictated by IAAF rules and "non-orthodox" techniques are not permitted. The javelin must be held at its grip and thrown overhand, over the athlete's shoulder or upper arm. Further, the athlete is prohibited from turning completely around such that his back faces the direction of throw. In practice, this prevents athletes from attempting to spin and hurl the javelin sidearm in the style of a discus throw. Instead of being confined to a circle, javelin throwers are provided with a runway 4 meters wide and at least 30 meters in length, ending in a curved arc from which their throw will be measured; athletes typically use this distance to gain momentum in a "run-up" to their throw, Also Gaining power in there throw. Like the other throwing events, the competitor may not leave the throwing area (the runway) until after the implement lands. The need to come to a stop behind the throwing arc limits both how close the athlete can come to the line before the release as well as the maximum speed achieved at the time of release.
The javelin is thrown towards a "sector" covering an angle of 29 degrees extending outwards from the arc at the end of the runway. A throw is legal only if the tip of the javelin lands within this sector, and the tip strikes the ground before any other part of the javelin. The distance of the throw is measured from the throwing arc to the point where the tip of the javelin landed, rounded down to the nearest centimeter.
Competition rules are similar to other throwing events: a round consists of one attempt by each competitor in turn, and competitions typically consist of three to six rounds. The competitor with the longest single legal throw (over all rounds) is the winner; in the case of a tie the competitors' second-longest throws are also considered. Competitions involving large numbers of athletes sometimes use a "cut": all competitors compete in the first three rounds, but only athletes who are currently among the top eight or have achieved some minimum distance are permitted to attempt to improve on their distance in additional rounds (typically three).
Unlike the other throwing events (shotput, discus, and hammer), the technique used to throw the javelin is dictated by IAAF rules and "non-orthodox" techniques are not permitted. The javelin must be held at its grip and thrown overhand, over the athlete's shoulder or upper arm. Further, the athlete is prohibited from turning completely around such that his back faces the direction of throw. In practice, this prevents athletes from attempting to spin and hurl the javelin sidearm in the style of a discus throw. Instead of being confined to a circle, javelin throwers are provided with a runway 4 meters wide and at least 30 meters in length, ending in a curved arc from which their throw will be measured; athletes typically use this distance to gain momentum in a "run-up" to their throw, Also Gaining power in there throw. Like the other throwing events, the competitor may not leave the throwing area (the runway) until after the implement lands. The need to come to a stop behind the throwing arc limits both how close the athlete can come to the line before the release as well as the maximum speed achieved at the time of release.
The javelin is thrown towards a "sector" covering an angle of 29 degrees extending outwards from the arc at the end of the runway. A throw is legal only if the tip of the javelin lands within this sector, and the tip strikes the ground before any other part of the javelin. The distance of the throw is measured from the throwing arc to the point where the tip of the javelin landed, rounded down to the nearest centimeter.
Competition rules are similar to other throwing events: a round consists of one attempt by each competitor in turn, and competitions typically consist of three to six rounds. The competitor with the longest single legal throw (over all rounds) is the winner; in the case of a tie the competitors' second-longest throws are also considered. Competitions involving large numbers of athletes sometimes use a "cut": all competitors compete in the first three rounds, but only athletes who are currently among the top eight or have achieved some minimum distance are permitted to attempt to improve on their distance in additional rounds (typically three).
Football
Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players, and is widely considered to be the most popular sport in the world. It is a football variant played on a rectangular grass or artificial turf field, with a goal in the centre of each of the short ends. The object of the game is to score by manoeuvring the ball into the opposing goal. In general play, the goalkeepers are the only players allowed to use their hands or arms to propel the ball; the rest of the team usually use their feet to kick the ball into position, occasionally using their torso or head to intercept a ball in midair. The team that scores the most goals by the end of the match wins. If the score is tied at the end of the game, either a draw is declared or the game goes into extra time and/or a penalty shootout, depending on the format of the competition.
The modern game was codified in England following the formation of The Football Association, whose 1863 Laws of the Game created the foundations for the way the sport is played today. Football is governed internationally by the Fédération Internationale de Football Association (International Federation of Association Football), commonly known by the acronym FIFA. The most prestigious international football competition is the FIFA World Cup, held every four years. This event, the most widely viewed in the world, boasts an audience twice that of the Summer Olympic Games.
Football is played in accordance with a set of rules known as the Laws of the Game. The game is played using a single spherical ball, known as the football. Two teams of eleven players each compete to get the ball into the other team's goal (between the posts and under the bar), thereby scoring a goal. The team that has scored more goals at the end of the game is the winner; if both teams have scored an equal number of goals then the game is a draw. Each team is led by a captain.
The primary rule is that players (other than goalkeepers) may not deliberately handle the ball with their hands or arms during play (though they do use their hands during a throw-in restart). Although players usually use their feet to move the ball around, they may use any part of their bodies other than their hands or arms.Within normal play, all players are free to play the ball in any direction and move throughout the pitch, though the ball cannot be received in an offside position.
In typical game play, players attempt to create goal scoring opportunities through individual control of the ball, such as by dribbling, passing the ball to a team-mate, and by taking shots at the goal, which is guarded by the opposing goalkeeper. Opposing players may try to regain control of the ball by intercepting a pass or through tackling the opponent in possession of the ball; however, physical contact between opponents is restricted. Football is generally a free-flowing game, with play stopping only when the ball has left the field of play or when play is stopped by the referee.
The modern game was codified in England following the formation of The Football Association, whose 1863 Laws of the Game created the foundations for the way the sport is played today. Football is governed internationally by the Fédération Internationale de Football Association (International Federation of Association Football), commonly known by the acronym FIFA. The most prestigious international football competition is the FIFA World Cup, held every four years. This event, the most widely viewed in the world, boasts an audience twice that of the Summer Olympic Games.
Football is played in accordance with a set of rules known as the Laws of the Game. The game is played using a single spherical ball, known as the football. Two teams of eleven players each compete to get the ball into the other team's goal (between the posts and under the bar), thereby scoring a goal. The team that has scored more goals at the end of the game is the winner; if both teams have scored an equal number of goals then the game is a draw. Each team is led by a captain.
The primary rule is that players (other than goalkeepers) may not deliberately handle the ball with their hands or arms during play (though they do use their hands during a throw-in restart). Although players usually use their feet to move the ball around, they may use any part of their bodies other than their hands or arms.Within normal play, all players are free to play the ball in any direction and move throughout the pitch, though the ball cannot be received in an offside position.
In typical game play, players attempt to create goal scoring opportunities through individual control of the ball, such as by dribbling, passing the ball to a team-mate, and by taking shots at the goal, which is guarded by the opposing goalkeeper. Opposing players may try to regain control of the ball by intercepting a pass or through tackling the opponent in possession of the ball; however, physical contact between opponents is restricted. Football is generally a free-flowing game, with play stopping only when the ball has left the field of play or when play is stopped by the referee.
Hockey
Hockey is any of a family of sports in which two teams play against each other by trying to maneuver a ball, or a hard, round, rubber or heavy plastic disc called a puck, into the opponent's net or goal, using a hockey stick.Field hockey is played on gravel, natural grass, sand-based or water-based artificial turf, with a small, hard ball. The game is popular among both males and females in many parts of the world, particularly in Europe, Asia, Australia, and South Africa. In most countries, the game is played between single-sex sides, although they can be mixed-sex.
The governing body is the 116-member International Hockey Federation (FIH). Men's Field hockey has been played at each summer Olympic Games since 1908 (except 1912 and 1924), while Women's Field Hockey has been played each summer Olympic Games since 1980.Modern field hockey sticks are J-shaped and constructed of a composite of wood, glass fibre or carbon fibre (sometimes both) and have a curved hook at the playing end, a flat surface on the playing side and curved surface on the rear side. While current field hockey appeared in the mid-18th century in England, primarily in schools, it was not until the first half of the 19th century that it became firmly established. The first club was created in 1849 at Blackheath in south-east London. Field hockey is the national sport of India and Pakistan.
Ice hockey is played on a large flat area of ice, using a three inch (76.2 mm) diameter vulcanized rubber disc called a puck. This puck is often frozen before high-level games to decrease the amount of bouncing and friction on the ice. The game is contested between two teams of skaters. The game is played all over North America, Europe and in many other countries around the world to varying extent. It is the most popular sport in Canada, Finland, the Czech Republic, and in Sweden.
The governing body is the 64-member International Ice Hockey Federation, (IIHF). Men's ice hockey has been played at the Winter Olympics since 1924, and was in the 1920 Summer Olympics. Women's ice hockey was added to the Winter Olympics in 1998. North America's National Hockey League (NHL) is the strongest professional ice hockey league, drawing top ice hockey players from around the globe. The NHL rules are slightly different from those used in Olympic ice hockey: the periods are 20 minutes long, counting downwards. There are three periods.
Ice hockey sticks are long L-shaped sticks made of wood, graphite, or composites with a blade at the bottom that can lie flat on the playing surface when the stick is held upright and can curve either way, legally, as to help a left- or right-handed player gain an advantage.There are early representations and reports of ice hockey-type games being played on ice in the Netherlands, and reports from Canada from the beginning of the nineteenth century, but the modern game was initially organized by students at McGill University, Montreal in 1875 who, by two years later, codified the first set of ice hockey rules and organized the first teams.
The governing body is the 116-member International Hockey Federation (FIH). Men's Field hockey has been played at each summer Olympic Games since 1908 (except 1912 and 1924), while Women's Field Hockey has been played each summer Olympic Games since 1980.Modern field hockey sticks are J-shaped and constructed of a composite of wood, glass fibre or carbon fibre (sometimes both) and have a curved hook at the playing end, a flat surface on the playing side and curved surface on the rear side. While current field hockey appeared in the mid-18th century in England, primarily in schools, it was not until the first half of the 19th century that it became firmly established. The first club was created in 1849 at Blackheath in south-east London. Field hockey is the national sport of India and Pakistan.
Ice hockey is played on a large flat area of ice, using a three inch (76.2 mm) diameter vulcanized rubber disc called a puck. This puck is often frozen before high-level games to decrease the amount of bouncing and friction on the ice. The game is contested between two teams of skaters. The game is played all over North America, Europe and in many other countries around the world to varying extent. It is the most popular sport in Canada, Finland, the Czech Republic, and in Sweden.
The governing body is the 64-member International Ice Hockey Federation, (IIHF). Men's ice hockey has been played at the Winter Olympics since 1924, and was in the 1920 Summer Olympics. Women's ice hockey was added to the Winter Olympics in 1998. North America's National Hockey League (NHL) is the strongest professional ice hockey league, drawing top ice hockey players from around the globe. The NHL rules are slightly different from those used in Olympic ice hockey: the periods are 20 minutes long, counting downwards. There are three periods.
Ice hockey sticks are long L-shaped sticks made of wood, graphite, or composites with a blade at the bottom that can lie flat on the playing surface when the stick is held upright and can curve either way, legally, as to help a left- or right-handed player gain an advantage.There are early representations and reports of ice hockey-type games being played on ice in the Netherlands, and reports from Canada from the beginning of the nineteenth century, but the modern game was initially organized by students at McGill University, Montreal in 1875 who, by two years later, codified the first set of ice hockey rules and organized the first teams.
Glima
Glima remains, as it always has been, friendly recreation and a gentleman's sport, but as the lösatags version (described below) shows it also has a rougher side.The core of the system are eight main bragd (techniques), which form the basic training for approximately 50 ways to execute a throw or takedown. Glima is a very old combative style.
The first version is by far the most widespread and the one typically associated with the term glima. Indeed, most people would say the term should be restricted to this kind only, and it is this version which is Iceland's national sport. Historically it was also the one put in highest esteem for favoring technique over strength.
Each of the two wrestlers wears a special belt around the waist and separate, additional belts on the lower thighs of each leg, which connect to the main belt with vertical straps. A fixed grip is then taken with one hand in the belt and the other in the trousers at thigh height. From this position the glima-wrestler attempts to trip and throw his opponent.
There are a number of modern submission Glima enthusiasts whose foundation lies in catch Glima as well as no small number whose training "lineage" traces back to catch-Glima.Rough and tumble fighting was the original American no holds barred (real no rules) underground hybrid "sport" that had but one rule - you win by knocking the man out or making him say "enough."
In this style of glima, a thrown wrestler may attempt to land on his feet and hands and if he succeeds in doing so he has not lost the fall. The winning condition in this type of glima is to make the opponent touch the ground with an area of the body between the elbow and the knee.
The first version is by far the most widespread and the one typically associated with the term glima. Indeed, most people would say the term should be restricted to this kind only, and it is this version which is Iceland's national sport. Historically it was also the one put in highest esteem for favoring technique over strength.
Each of the two wrestlers wears a special belt around the waist and separate, additional belts on the lower thighs of each leg, which connect to the main belt with vertical straps. A fixed grip is then taken with one hand in the belt and the other in the trousers at thigh height. From this position the glima-wrestler attempts to trip and throw his opponent.
There are a number of modern submission Glima enthusiasts whose foundation lies in catch Glima as well as no small number whose training "lineage" traces back to catch-Glima.Rough and tumble fighting was the original American no holds barred (real no rules) underground hybrid "sport" that had but one rule - you win by knocking the man out or making him say "enough."
In this style of glima, a thrown wrestler may attempt to land on his feet and hands and if he succeeds in doing so he has not lost the fall. The winning condition in this type of glima is to make the opponent touch the ground with an area of the body between the elbow and the knee.
Chess
Chess is a recreational and competitive game played between two players. The current form of the game emerged in Southern Europe during the second half of the 15th century after evolving from similar, much older games of Indian and Persian origin. Today, chess is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.
The game is played on a square chequered chessboard with 64 squares arranged in an eight-by-eight grid. At the start, each player (one controlling the white pieces, the other controlling the black pieces) controls sixteen pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. The object of the game is to checkmate the opponent's king, whereby the king is under immediate attack (in "check") and there is no way to remove it from attack on the next move.
The tradition of organized competitive chess started in the 16th century and has developed extensively. Chess today is a recognized sport of the International Olympic Committee. The first official World Chess Champion, Wilhelm Steinitz, claimed his title in 1886; Viswanathan Anand is the current World Champion. Theoreticians have developed extensive chess strategies and tactics since the game's inception. Aspects of art are found in chess composition.
One of the goals of early computer scientists was to create a chess-playing machine. Today's chess is deeply influenced by the abilities of current chess programs and the ability to play against others online. In 1997, Deep Blue became the first computer to beat the reigning World Champion in a match when it defeated Garry Kasparov.
Chess games do not have to end in checkmate — either player may resign if the situation looks hopeless. If it is a timed game a player may run out of time and lose, even with a much superior position. Games also may end in a draw (tie). A draw can occur in several situations, including draw by agreement, stalemate, threefold repetition of a position, the fifty-move rule, or a draw by impossibility of checkmate (usually because of insufficient material to checkmate).
Besides casual games without exact timing, chess is also played with a time control, mostly by club and professional players. If a player's time runs out before the game is completed, the game is automatically lost (provided his opponent has enough pieces left to deliver checkmate). The timing ranges from long games played up to seven hours to shorter rapid chess games lasting usually 30 minutes or one hour per game. Even shorter is blitz chess with a time control of three to fifteen minutes for each player, or bullet chess (under three minutes).
The game is played on a square chequered chessboard with 64 squares arranged in an eight-by-eight grid. At the start, each player (one controlling the white pieces, the other controlling the black pieces) controls sixteen pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. The object of the game is to checkmate the opponent's king, whereby the king is under immediate attack (in "check") and there is no way to remove it from attack on the next move.
The tradition of organized competitive chess started in the 16th century and has developed extensively. Chess today is a recognized sport of the International Olympic Committee. The first official World Chess Champion, Wilhelm Steinitz, claimed his title in 1886; Viswanathan Anand is the current World Champion. Theoreticians have developed extensive chess strategies and tactics since the game's inception. Aspects of art are found in chess composition.
One of the goals of early computer scientists was to create a chess-playing machine. Today's chess is deeply influenced by the abilities of current chess programs and the ability to play against others online. In 1997, Deep Blue became the first computer to beat the reigning World Champion in a match when it defeated Garry Kasparov.
Chess games do not have to end in checkmate — either player may resign if the situation looks hopeless. If it is a timed game a player may run out of time and lose, even with a much superior position. Games also may end in a draw (tie). A draw can occur in several situations, including draw by agreement, stalemate, threefold repetition of a position, the fifty-move rule, or a draw by impossibility of checkmate (usually because of insufficient material to checkmate).
Besides casual games without exact timing, chess is also played with a time control, mostly by club and professional players. If a player's time runs out before the game is completed, the game is automatically lost (provided his opponent has enough pieces left to deliver checkmate). The timing ranges from long games played up to seven hours to shorter rapid chess games lasting usually 30 minutes or one hour per game. Even shorter is blitz chess with a time control of three to fifteen minutes for each player, or bullet chess (under three minutes).
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