Sadler won the
British Championship in 1995 at the age of 21 and again in 1997 (jointly with
Michael Adams). He represented England in the
1996 Chess Olympiad, scoring 10½/13 and winning a gold medal for the best score on board four (England finished fourth), and also played in 1998 scoring 7½/12. He made 7/9 on board four for England at the
European Team Chess Championship in
Pula in 1997. His was the best individual score of the five-man English team and so contributed significantly to England's first (and to date only) gold medal in a major competition. For several years, he was the book reviewer for
New In Chess magazine and also wrote books and articles for other chess magazines. In 2000, his book ''Queen's Gambit Declined'' (published by Everyman) was awarded the
British Chess Federation's book of the year award. Latterly a resident of
Amersfoort, Sadler returned to chess in 2010 to play in a rapidplay tournament held in nearby
Wageningen. He won the event with a perfect score of 7/7, finishing ahead of grandmasters
Jan Timman,
Friso Nijboer and
Daniel Fridman. In August 2011, Sadler continued his resurgence by winning the XIII Open Internacional D'Escacs de Sants, scoring 8½/10, ahead of several grandmasters including
Jan Smeets. Right thereafter, in October 2011, he went on to compete in the Oslo Chess International; participants included ten other grandmasters, among them
Sergei Tiviakov,
Jon Ludvig Hammer and
Sergey Volkov, all being 2600+ rated. Sadler won convincingly, with 8/9 points and a
performance rating of 2849. Going into 2012, the gain in rating points elevated him to fourth rank amongst active English players and also lifted him back into the
World Top 100. In a January 2012 interview, Sadler stated that chess was now primarily a "hobby" for him. While relishing his return to tournament play, Sadler noted that he was now an amateur, and would not be coming back as a professional. He contrasts his present lighthearted attitude with his demeanor during his time as a professional, when he was "working ten hours a day and incredibly intensively". Since 2019, Sadler has taken an interest in
computer chess, especially
AlphaZero and the
Top Chess Engine Championship (TCEC), writing several books and news articles on the topic:
Game Changer,
The Silicon Road to Chess Improvement and various articles in the
New In Chess magazine. ==Bibliography==