Cuban Grandmaster (2016). Best results: VIII Festival Internacional de Ajedrez of Bogota, 2014; IX Festival Internacional de Ajedrez Universidad Central (COL), 1-2nd ; XXIV Open Internacional Ciutat de Montcada 2016, 1st. Peak rating: 2560 in 2016.

Armenian Grandmaster (2013), Armenian Champion in 2015, Armenian U14 Champion in 2008, European U16 Champion in 2010 Best results: G. Kasparyan Memorial – Young Masters 2010, 1st; Youth Stars Tournament, 1st; Albena Open 2012, 1st; Vila de Sitges 2013, 1st; Kazhar Cup 2016, 1-2nd; Sabatell Open 2016, 1st; Negros Open (PHI), 1-2nd; Badalona Open 2017, 1-2nd; Yerevan Open

Czech International Master (1950) and International Arbiter (1951). Czech Champion in 1927, 1928, 1938, 1944. Prague Champion on many occasions. Acted as Chief Arbiter at many important events, including the 1951 and 1954 World Championship matches, 1952 Olympiad and Candidates Tournament of Zurich in 1953. A participant in 4 Olympiads between 1931 and 1939 (the

Icelandic Grandmaster (1958), the fourth President of FIDE 1978-82. Lawyer. Champion of Iceland in 1952-53, 1957, 1961, 1962, 1964 and 1969, winner of the North Countries Championships in 1953 and 1971. Best results: In 1955 came in equal first at Hastings 1956, 1-2nd; Reykjavik in 1956, 1-st; Beverwijk 1959, 1st; Bergendal 1960, 1st; Los Angeles

Serbian Grandmaster (1975). Moved to Germany in 1985. Twice equal first at the Yugoslavian championships in 1968 and 1971. Best results: Bevervijk 1967, 1st-3rd; Wijk aan Zee 1968, 1st; Paris 1968, 1969, 1970, 1st; Zwolle 1968, 2nd; San Juan 1971, 1st; Prishtina 1972, 1st; San Paulo 1973, 1st; Olot 1974, 2nd-3rd; Casablanca 1974, 1st-4th; Hasselt

    Russian International Master (2016). World U14 champion in 2016, Russian U15 Champion in 2015. Best results: Moscow Open 2018, 1st. Peak rating: 2530 in 2018.

  Hungarian Grandmaster (2016). European U10 Championship in 2009. Few times Hungarian Youth Champion. Best results: First Saturday GM 2015, 1st; International Chess Tournament III.Ceramica Corund 2017; 1-2nd; Magistral Ciutat de Barcelona 2017, 1-2nd. Peak rating: 2619 in 2018.

Estonian Grandmaster (1992), Estonian Champion in 1992, USSR U20 Champion in 1984. Best national player of the late 1990s. Best results: Tallinn 1989, 1st; Helsinki 1989, 1st; Terrassa 1990, 1st; Marchena 1990, 1st; Sevilla 1992, 1st; Antwerp 1993, 1st, New York 1994, 1-2st; Riga (1995), 1st; Saint-Pétersbourg (1996), 1st; Hoogeveen 1997, 1st and Szeged 1997,

Turkmenistan Grandmaster (2004) born in Moscow. Best results: Moscow GM 2003, 1st; Balkan Masters (TUK) 2004, 1-2nd; Turkmenistan championship 2009, 1-2nd; IV.Gebze Municipality Liberation Move Chess Tournament Open 2013, 1st; Hatay Festival Chess Tournament 2014, 1st; 22nd International Troy Chess Tournament (TUR) 2015, 1st. A participant in the Olympiads since 1994. Peak rating: 2502 in

Dutch leading player at the beginning of the twentieth century. Dutch champion in 1909. Medical doctor. Best results: won or shared first at Haarlem 1901 and finished second at Amsterdam 1899. He played 29 matches from 1893 to 1928. Won against all Dutch players except Euwe to whom he lost twice. He lost to all