John Nunn

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John Nunn
JohnNunn10 (A).jpg
Nunn in 2010
Full nameJohn Denis Martin Nunn
Country England
Born (1955-04-25) 25 April 1955 (age 69)
London, England
Title Grandmaster (1978)
International Solving Grandmaster (2004)
World Champion WC Problem Solving 2004, 2007, 2010
WC (Seniors over-65) 2022, 2023
FIDE   rating 2546 (November 2024)
Peak rating 2630 (January 1995)
Peak rankingNo. 9 (January 1985)
Scientific career
Thesis Some problems in algebraic topology  (1978)
Doctoral advisor John Hubbuck

John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was formerly in the world's top ten. [1] [2]

Contents

Education and early life

Nunn was born in London. As a junior, he showed a prodigious talent for chess and in 1967, at 12 years of age, he won the British under-14 Championship. At 14, he was London Under-18 Champion for the 1969–70 season [3] and less than a year later, at just 15 years of age, he proceeded to Oriel College, Oxford, to read Mathematics. At the time, Nunn was Oxford's youngest undergraduate since Cardinal Wolsey in 1520. [4] Graduating in 1973, he went on to gain a Doctor of Philosophy degree in 1978 with a thesis on finite H-spaces, supervised by John Hubbuck. [5] In 1978, Nunn spent a year teaching Mathematics at Maidstone Grammar School, before returning to Oxford as a mathematics lecturer until 1981, when he became a professional chess player.

Career

In 1975, he became the European Junior Chess Champion. He gained the Grandmaster title in 1978 and was British champion in 1980. Nunn has twice won individual gold medals at Chess Olympiads. In 1989, he finished sixth in the inaugural 'World Cup', a series of tournaments in which the top 25 players in the world competed. His best performance in the World Chess Championship cycle came in 1987, when he lost a playoff match against Lajos Portisch for a place in the Candidates Tournament. At the prestigious Hoogovens tournament (held annually in Wijk aan Zee) he was a winner in 1982, 1990 and 1991.

John Nunn in 1982 Hoogovens Schaaktoernooi vierde ronde. Nunn (koploper) in aktie, Bestanddeelnr 931-9184.jpg
John Nunn in 1982

Nunn achieved his highest Elo rating of 2630 in January 1995. Six years earlier, in January 1989, his then rating of 2620 was high enough to elevate him into the world's top ten, where he shared ninth place. This was close to the peak of the English chess boom, and there were two English players above him on the list: Nigel Short (world number three, 2650) and Jonathan Speelman (world number five, 2640). Nunn has now retired from serious tournament play and, until he resurfaced as a player in two Veterans events in 2014 and 2015, had not played a FIDE-rated game since August 2006; [6] however, he has been active in the ECF rapid play. [7]

As well as being a strong player, Nunn is regarded as one of the best contemporary authors of chess books. He has penned many books, including Secrets of Grandmaster Chess, which won the British Chess Federation Book of the Year award in 1988, and John Nunn's Best Games, which took the award in 1995. He is the director of chess publishers Gambit Publications. Chess historian Edward Winter has written of him: [8] [9]

A polymath, Nunn has written authoritative monographs on openings, endings and compositions, as well as annotated games collections and autobiographical volumes. As an annotator he is equally at home presenting lucid prose descriptions for the relative novice and analysis of extreme depth for the expert.

In a 2010 interview, Magnus Carlsen said he thought extreme intelligence could be a hindrance to one's chess career. [10] As an example of this, he cited Nunn:

I am convinced that the reason the Englishman John Nunn never became world champion is that he is too clever for that. ... He has so incredibly much in his head. Simply too much. His enormous powers of understanding and his constant thirst for knowledge distracted him from chess.

Nunn is also involved with chess problems, composing several examples and solving as part of the British team on several occasions. On this subject he wrote Solving in Style (1985). He won the World Chess Solving Championship in Halkidiki, Greece, in September 2004 and also made his final GM norm in problem solving. There were further wins of the World Solving Championship in 2007 [11] and in 2010. [12] He is the third person ever to gain both over-the-board and solving GM titles (the others being Jonathan Mestel and Ram Soffer; Bojan Vučković has been the fourth since 2008).

Nunn has long been interested in computer chess. In 1984, he began annotating games between computers for Personal Computer World magazine, and joined the editorial board of Frederic Friedel's Computerschach & Spiele magazine. In 1987, he was announced as the first editor of the newly created Chessbase magazine. [13] The 1992 release of his first book making use of chess endgame tablebases, Secrets Of Rook Endings, was later followed by Secrets of Minor-Piece Endings, and Secrets Of Pawnless Endings. These books include human-usable endgame strategies found by Nunn (and others) by extensive experimentation with tablebases, and new editions have come out and are due as more tablebases are created and tablebases are more deeply data-mined. Nunn is thus (as of 2004) the foremost data miner of chess endgame tablebases.

Nunn finished third in the World Senior Chess Championship (over-50 section) of 2014 in Katerini, Greece, [14] second in the European Senior Chess Championship (over-50) of 2015 in Eretria, Greece, [15] and first in the World Senior Chess Championship (over-65 section) in Assisi, Italy in 2022. [16] He was the winner again in 2023, at Terrasini.

Notable games

Øst-Hansen vs. Nunn, Teesside 1974
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Final position
Beliavsky vs. Nunn, Hoogovens 1985
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Final position

Books

Personal life

Nunn is married to Petra Fink-Nunn, a German chess player with the title Woman FIDE Master. They have a son, Michael.

Astronomy

Coincident with a reduction in his over-the-board chess, Nunn has developed a passion for astronomy, a hobby he shares with ex-world chess champion Viswanathan Anand. Nunn has various articles and lectures published in Chessbase News. [18] [19] [20] [21]

Related Research Articles

The endgame is the final stage of a chess game which occurs after the middlegame. It begins when few pieces are left on the board.

Zugzwang is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position.

The fifty-move rule in chess states that a player can claim a draw if no capture has been made and no pawn has been moved in the last fifty moves. The purpose of this rule is to prevent a player with no chance of winning from obstinately continuing to play indefinitely or seeking to win by tiring the opponent.

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The two knights endgame is a chess endgame with a king and two knights versus a king. In contrast to a king and two bishops, or a bishop and a knight, a king and two knights cannot force checkmate against a lone king. Although there are checkmate positions, a king and two knights cannot force them against proper, relatively easy defense.

<span class="mw-page-title-main">Philidor position</span> Chess endgame drawing technique

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<span class="mw-page-title-main">Tarrasch rule</span> General principle in chess

The Tarrasch rule is a general principle that applies in the majority of chess middlegames and endgames. Siegbert Tarrasch (1862–1934) stated the "rule" that rooks should be placed behind passed pawns – either the player's or the opponent's. The idea behind the guideline is that (1) if a player's rook is behind their own passed pawn, the rook protects it as it advances, and (2) if it is behind an opponent's passed pawn, the pawn cannot advance unless it is protected along its way.

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In chess, the endgame tablebase, or simply tablebase, is a computerised database containing precalculated evaluations of endgame positions. Tablebases are used to analyse finished games, as well as by chess engines to evaluate positions during play. Tablebases are typically exhaustive, covering every legal arrangement of a specific selection of pieces on the board, with both White and Black to move. For each position, the tablebase records the ultimate result of the game and the number of moves required to achieve that result, both assuming perfect play. Because every legal move in a covered position results in another covered position, the tablebase acts as an oracle that always provides the optimal move.

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References

  1. "ChessBase Events". 17 March 2005. Archived from the original on 17 March 2005. Retrieved 11 December 2017.
  2. John Nunn player profile and games at Chessgames.com
  3. British Chess Magazine , March 1970, p. 66. London Championships 1969/70, held at Islington Green Secondary School (29 December 1969 – 3 January 1970)
  4. James, Jeremy; Barden, Leonard (1979). The Master Game. BBC. p. 23. ISBN   0-563-17437-4.
  5. Nunn, John Denis Martin (1978). Some problems in algebraic topology. bodleian.ox.ac.uk (DPhil thesis). University of Oxford. OCLC   957036881. EThOS   uk.bl.ethos.467333. Archived from the original on 20 February 2021. Retrieved 11 December 2017.
  6. "Nunn, John D M (ENG)". FIDE Chess ratings. fide.com.
  7. "English Chess Federation Grading Database". 1 October 2011. Archived from the original on 1 October 2011. Retrieved 11 December 2017.
  8. Edward Winter, Chess Note 4218. Retrieved on 19 January 2009.
  9. “John Nunn” by Edward Winter
  10. "Magnus Carlsen on his chess career". En.chessbase.com. 15 March 2010. Retrieved 11 December 2017.
  11. John Nunn wins World Chess Problem Solving Championship, ChessBase News, 3 November 2007
  12. John Nunn wins World Problem Solving Championship, ChessBase News, 3 November 2010
  13. Computerschach & Spiele. 1987#1
  14. 24th World Senior Chess Championship Senior 50+ Chess-Results
  15. 15th European Senior Ch. Open 50 Chess-Results
  16. Winners crowned at World Senior Championship 2022 ChessBase
  17. Seirawan, Yasser, Winning Chess Brilliancies, Microsoft Press, 1995.
  18. "Chess and Astronomy – Global Rent-a-Scope". En.chessbase.com. 14 June 2010. Retrieved 11 December 2017.
  19. "Images of stars by the stars". En.chessbase.com. 3 February 2014. Retrieved 11 December 2017.
  20. "Breathtaking: astronomical workshop at the London Chess Classic". En.chessbase.com. 8 December 2011. Retrieved 11 December 2017.
  21. "Solutions to chess problems and astronomical dilemmas". En.chessbase.com. 9 November 2007. Retrieved 11 December 2017.