Miguel Najdorf ( ; born Mojsze Mendel Najdorf; 15 April 1910 – 4 July 1997) was a Polish-Argentine chess grandmaster. Originally from Poland, he was in Argentina when World War II began in 1939, and he stayed and settled there. He was a leading world player in the 1940s and 1950s, and is also known for the Najdorf Variation, one of the most popular chess openings.

Early life in Poland

Najdorf was tutored first by Dawid Przepiórka, then by Savielly Tartakower, the latter of whom he always referred to as "my teacher".

At the beginning of his chess career, around 1930, Najdorf defeated a player believed to be named "Glücksberg" in a famous game often referred to as "The Polish Immortal". In 1930, he tied for 6th–7th at the Warsaw Championship, an event won by Paulino Frydman. In 1931, he took second in Warsaw, behind Frydman. In 1932, he tied for 9th–10th in Warsaw. In 1933, he won in Warsaw (Quadrangular). In January 1934, he finished second to Rudolf Spielmann, in Warsaw. In summer 1934, he lost a match against Ored Karlin (+1–2=1). In 1934, he won the Warsaw championship. In 1935, he tied for 2nd–4th with Frydman and Henryk Friedman, behind Tartakower, in the 3rd Polish Chess Championship, held in Warsaw. Afterward, Najdorf won a match against Tartakower in Toruń (+2–1=2). In 1936, he tied for first with Lajos Steiner in the Hungarian Championship. In 1937, he took third at the 4th Championship of Poland in Jurata. In 1937, he won in Rogaška Slatina (Rohitsch-Sauerbrunn). In 1938, he tied for 10th–12th in Łódź. In 1939, he took sixth in Margate, and won in Warsaw.

Najdorf represented Poland in four pre-war Chess Olympiads. In August 1935, he played third board in the 6th Chess Olympiad in Warsaw (+9–2=6). In August 1936, he was second board in 3rd unofficial Chess Olympiad organised by the German Chess Federation in Munich (+14–2=4). In June/July 1937, he played at second board in the 7th Chess Olympiad in Stockholm (+5–3=7). In the 1939 Olympiad, Najdorf played second board for Poland and achieved a score of +12−2=4, winning a gold pen and pencil set.

Move to Argentina

During the 8th Chess Olympiad in Buenos Aires in August/September 1939, World War II broke out. Najdorf was Jewish, as were two of his teammates, Tartakower and Frydman. He decided to stay and settle in Argentina (as did many others). He became an Argentine citizen in 1944.

His wife, daughter, parents and four siblings all were murdered in The Holocaust. Najdorf later remarried (twice) and had two daughters.

He set these records in the hope that the news would be reported in Europe and his family would learn of his whereabouts,

Career in Argentina

1940s

In September 1939, after the Olympiad, Najdorf emerged as one of the top players in the chess world. He tied for first with Paul Keres at Buenos Aires (Círculo de Ajedrez); the two scored 8½/11. In 1941, he took second, after Gideon Ståhlberg at Mar del Plata, with 12½/17. Later in 1941, he finished equal first with Ståhlberg at Buenos Aires, the two scoring 11/14. In 1942, he won at Mar del Plata, with 13½/17, ahead of Ståhlberg. In 1943, he was second at Mar del Plata, behind Stålhberg, scoring 10/13. In 1943, he won at Rosario. In 1944, he won at La Plata, with 13/16, ahead of Ståhlberg. In 1944, he tied for first with Hermann Pilnik at Mar del Plata, with each scoring 12/15. In 1945, he won at Buenos Aires (Roberto Grau Memorial), with 10/12, ahead of Ståhlberg and Carlos Guimard. He took second place at Viña del Mar 1945, with 10½/13, behind Guimard, then won Mar del Plata 1945 with 11/15, ahead of Ståhlberg, and repeated at Mar del Plata 1946 with 16/18, ahead of Guimard and Ståhlberg. He also won at Rio de Janeiro 1946.

After World War II ended, organized chess resumed in the international arena, particularly in war-stricken Europe. In 1946, Najdorf tied for 4th–5th with László Szabó at Groningen, with 11½/19; the event was won by Mikhail Botvinnik. He then won at Prague, with (+9−1=3), ahead of Petar Trifunović, Gösta Stoltz, Svetozar Gligorić, and Jan Foltys. He also won at Barcelona 1946, with 11½/13, ahead of Daniel Yanofsky. In 1947, he took second place at Buenos Aires/La Plata (Sextangular), with 6½/10, behind Ståhlberg, but ahead of Max Euwe. In 1947, he won at Mar del Plata. In 1947, he finished second, after Erich Eliskases, at São Paulo.

In 1948, Najdorf placed second at New York City with 6/9, two points behind Reuben Fine. He tied for 4th–5th with Héctor Rossetto at Mar del Plata, with 10/17, behind Eliskases, Ståhlberg, and Medina Garcia. Najdorf won at Mar del Plata 1948 with 14/17, ahead of Ståhlberg (13½), Eliskases (12), and Euwe (10½). He was second at Buenos Aires 1948, with 8/10, behind Ståhlberg. Najdorf won at Venice 1948, with 11½/13, ahead of Gedeon Barcza, Esteban Canal, and Euwe. In 1949, he tied for first with Ståhlberg at Buenos Aires. In 1950, he won at Amsterdam, with 15/19, ahead of Samuel Reshevsky (14), Ståhlberg (13½), Gligorić (12), Vasja Pirc (12), and Euwe (11½). He also won at Bled in 1950.

World Championship contender

Although not a full-time chess professional (for many years he worked in the insurance business, selling life insurance), Najdorf was one of the world's leading chess players in the 1940s and 1950s.

Najdorf's string of successes from 1939 to 1947 had raised him into the ranks of the world's top players. According to Chessmetrics, he was ranked second in the world from mid 1947 to mid 1949. Based on his results, there was talk of inviting him to the 1948 World Championship tournament, but in the end he was not invited. He had won an ostensible qualifying tournament at Prague by a margin of 1½ points. There was a view in some quarters that Prague had been a rather weak tournament, so Najdorf's accomplishment was downplayed. Najdorf stated in a 1947 interview: