Interregnum of World Chess Champions
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The Interregnum of World Chess Champions was the period between March 24, 1946 (the date of Alexander Alekhine
Alexander Alekhine
Alexander Alexandrovich Alekhine was the fourth World Chess Champion. He is often considered one of the greatest chess players ever.By the age of twenty-two, he was already among the strongest chess players in the world. During the 1920s, he won most of the tournaments in which he played...

's death) and May 17, 1948 (when Mikhail Botvinnik
Mikhail Botvinnik
Mikhail Moiseyevich Botvinnik, Ph.D. was a Soviet and Russian International Grandmaster and three-time World Chess Champion. Working as an electrical engineer and computer scientist at the same time, he was one of the very few famous chess players who achieved distinction in another career while...

 won a special championship tournament
World Chess Championship 1948
The 1948 World Chess Championship was a tournament played to determine a new World Chess Champion following the death of the previous champion Alexander Alekhine in 1946. The tournament marked the passing of control of the championship title to FIDE, the International Chess Federation which had...

).

When Alekhine suddenly died in 1946, the title of World Chess Champion became vacant for the first time in its 60-year history. Since the 19th century, the title was decided by matches between the current champion and a challenger, who by winning would become the new champion. Alekhine died holding the title, leaving no obvious method for a new player to succeed him.

The situation was very confused, with many respected players and commentators offering different solutions, for example: Max Euwe
Max Euwe
Machgielis Euwe was a Dutch chess Grandmaster, mathematician, and author. He was the fifth player to become World Chess Champion . Euwe also served as President of FIDE, the World Chess Federation, from 1970 to 1978.- Early years :Euwe was born in Watergraafsmeer, near Amsterdam...

 should be declared champion because he was the last player to win a championship match; Mikhail Botvinnik
Mikhail Botvinnik
Mikhail Moiseyevich Botvinnik, Ph.D. was a Soviet and Russian International Grandmaster and three-time World Chess Champion. Working as an electrical engineer and computer scientist at the same time, he was one of the very few famous chess players who achieved distinction in another career while...

 should be declared champion because Alekhine had accepted a challenge from Botvinnik before his death; or Euwe should play a match for the title against Botvinnik. FIDE, the international chess federation, found it very difficult to organize the early discussions on how to resolve the interregnum because problems with money and travel so soon after the end of World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 prevented many countries from sending representatives - most notably the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

. The shortage of clear information resulted in otherwise responsible magazines publishing rumors and speculation, which only made the situation more confused.

FIDE's discussions mainly favored: a multi-round all-play-all
Round-robin tournament
A round-robin tournament is a competition "in which each contestant meets all other contestants in turn".-Terminology:...

 tournament involving the world's top players, to determine who would be the new World Champion ( their first proposal in July 1946 nominated Euwe, Botvinnik, Paul Keres
Paul Keres
Paul Keres , was an Estonian chess grandmaster, and a renowned chess writer. He was among the world's top players from the mid-1930s to the mid-1960s....

, Vasily Smyslov
Vasily Smyslov
Vasily Vasilyevich Smyslov was a Soviet and Russian chess grandmaster, and was World Chess Champion from 1957 to 1958. He was a Candidate for the World Chess Championship on eight occasions . Smyslov was twice equal first at the Soviet Championship , and his total of 17 Chess Olympiad medals won...

, Reuben Fine
Reuben Fine
Reuben Fine was one of the strongest chess players in the world from the early 1930s through the 1940s, an International Grandmaster, psychologist, university professor, and author of many books on both chess and psychology.Fine won five medals in three chess Olympiads. Fine won the U.S...

, Samuel Reshevsky
Samuel Reshevsky
Samuel "Sammy" Herman Reshevsky was a famous chess prodigy and later a leading American chess Grandmaster...

 and one of the winners of the Groningen and Prague
Prague
Prague is the capital and largest city of the Czech Republic. 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 over 2.3 million...

 tournaments to be held later in 1946); a match for the title every 3 years after that, the challenger being selected by a series of tournaments. But some writers suggest that at the 1947 FIDE congress, Euwe was declared World Champion on a vote that took place just before the Soviet Union's delegates arrived, and the Soviet Union immediately supported the proposal for a World Championship Tournament - so Euwe was deposed after a two hour "reign" as World Champion. Earlier in 1947 Botvinnik had written an article in which he: stated the need to prevent champions from avoiding the strongest challengers and to make sure that the financial arrangements were satisfactory for both players and for whoever was hosting the events; supported the proposal that the vacant world championship should be filled by the winner of a multi-round all-play-all tournament; and proposed a system for selecting future challengers that was very like FIDE's 1946 proposals and the system that operated from 1948 to 1963. The proposed tournament was very similar in concept to the 1938 AVRO tournament
AVRO tournament
The AVRO tournament was a chess tournament held in the Netherlands in 1938, sponsored by the Dutch broadcasting company AVRO. The event was a double round-robin tournament...

, whose purpose had been to decide who should challenge Alekhine for the title.

The World Championship Tournament
World Chess Championship 1948
The 1948 World Chess Championship was a tournament played to determine a new World Chess Champion following the death of the previous champion Alexander Alekhine in 1946. The tournament marked the passing of control of the championship title to FIDE, the International Chess Federation which had...

 took place in 1948, the first half in The Hague
The Hague
The Hague is the capital city of the province of South Holland in the Netherlands. With a population of 500,000 inhabitants , it is the third largest city of the Netherlands, after Amsterdam and Rotterdam...

 and the second in Moscow. Botvinnik won by scoring 14 points out of 20 and making a plus score against each of the other players; in fact he clinched first place some days before the last round ended on
May 17, 1948. Thus he became the new world champion and brought the interregnum to an end. Competitions for the World Chess Championship would be held exclusively under FIDE's auspices for the next 45 years.

The Interregnum was a unique period in modern chess history. Although there were gaps in the chain of succession of the title when a new champion did not play against the old one (e.g. Anatoly Karpov
Anatoly Karpov
Anatoly Yevgenyevich Karpov is a Russian chess grandmaster and former World Champion. He was the official world champion from 1975 to 1985 when he was defeated by Garry Kasparov. He played three matches against Kasparov for the title from 1986 to 1990, before becoming FIDE World Champion once...

 after Bobby Fischer
Bobby Fischer
Robert James "Bobby" Fischer was an American chess Grandmaster and the 11th World Chess Champion. He is widely considered one of the greatest chess players of all time. Fischer was also a best-selling chess author...

). From 1993 until 2006 there were two "world champions" at the same time, but at no other time was there no champion at all in the chess world.
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