Age, Biography and Wiki
John Roycroft (Arthur John Roycroft) was born on 25 July, 1929 in London, England. Discover John Roycroft's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. Learn How rich is He in this year and how He spends money? Also learn how He earned most of networth at the age of 94 years old?
| Popular As |
Arthur John Roycroft |
| Occupation |
N/A |
| Age |
95 years old |
| Zodiac Sign |
Leo |
| Born |
25 July 1929 |
| Birthday |
25 July |
| Birthplace |
London, England |
| Nationality |
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We recommend you to check the complete list of Famous People born on 25 July.
He is a member of famous with the age 95 years old group.
John Roycroft Height, Weight & Measurements
At 95 years old, John Roycroft height not available right now. We will update John Roycroft's Height, weight, Body Measurements, Eye Color, Hair Color, Shoe & Dress size soon as possible.
| Physical Status |
| Height |
Not Available |
| Weight |
Not Available |
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Not Available |
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Not Available |
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Not Available |
Dating & Relationship status
He is currently single. He is not dating anyone. We don't have much information about He's past relationship and any previous engaged. According to our Database, He has no children.
| Family |
| Parents |
Not Available |
| Wife |
Not Available |
| Sibling |
Not Available |
| Children |
Not Available |
John Roycroft Net Worth
His net worth has been growing significantly in 2022-2023. So, how much is John Roycroft worth at the age of 95 years old? John Roycroft’s income source is mostly from being a successful . He is from . We have estimated
John Roycroft's net worth
, money, salary, income, and assets.
| Net Worth in 2023 |
$1 Million - $5 Million |
| Salary in 2023 |
Under Review |
| Net Worth in 2022 |
Pending |
| Salary in 2022 |
Under Review |
| House |
Not Available |
| Cars |
Not Available |
| Source of Income |
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John Roycroft Social Network
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Timeline
John Roycroft was President of Hendon Chess Club until he moved to Oxfordshire in 2018, where he attends Cumnor Chess Club meetings. He was married to Betty Roycroft for nearly 60 years until her passing in July 2020, and they have two grown up children, Jonathan - who is Director of Sports at Oxford University and Katherine - who lives in Italy and runs her own private language school.
Roycroft's adaptation of the Guy–Blandford code in the 1970s resulted in the Guy–Blandford–Roycroft code, an efficient way to index endgame studies – or any chess position. He also advised Ken Thompson in writing programs for endgame data bases with four and five pieces. For queen and pawn against queen some results were published by Roycroft in three booklets in 1986, years ahead of full tablebase output on CD.
Roycroft worked for IBM UK from 1961 until early retirement in 1987. From April 1984 to October 1985 he was seconded to Donald Michie (Machine Intelligence Research Unit, Edinburgh, followed by The Turing Institute, Glasgow). The outcome was the paper "Expert Against Oracle" in Machine Intelligence 11, Clarendon Press 1988.
In 1959 he was awarded the title International Judge of Chess Compositions. In 1965 he founded EG, the first long-running journal exclusively for endgame studies. Roycroft served as editor and publisher through 1991. The journal continues to be published, but under Dutch ownership ("ARVES"). Roycroft remained its chief editor until 2007 when Harold van der Heijden took over. His 1972 book Test Tube Chess (revised as The Chess Endgame Study, 1981) is considered one of the best English-language examinations of endgame studies. He also served as the endgame study editor for the British Chess Magazine from 1973 to 1974.
Arthur John Roycroft (born 25 July 1929, London) is an English chess endgame study composer and author.
