Lajos Portisch has participated in a record of 20 Olympiads from 1956 until 2000, playing a record 260 games with  a score of 176½ points (+121 =113 -26), for 68.3 per cent.

‘Immortal’ is also used for chess problem. One of them was composed in 1856 by Konrad Bayer (1828-17.10.1897).  A prize winner by Konrad Bayer, where White, after having sacrificed 6 men, mates with the only remaining piece, a Pawn.

About this game, I Chernev said: This is probably one of the most famous of all miniature games. One reason that it is quoted so often is that the finish IS strikingly brilliant. Another reason for its  popularity with the average player is the fact that it caught a Master by surprise,  a player known for his encyclopedic

In 2016, after 23 Chess Olympiads, Torre had recorded 103 wins, 124 draws and 43 losses in 270 games for a total score of 165 points. He is holding the distinction of having played the most games in the history of the Olympiad.

The following game between M. Euwe and A. Alekhine was considered by R. Fine as one of the world’s best games of chess.  The game called The Pearl of Zandvoort was performed at the 1935 world championship.

Fabiano Caruana’s quickest lost in classical chess since he became a top player could be this one:

I found only three players who played the Olympiads for 3 different countries: Boris Gelfand (USSR, Belarus and Israel), Alexander Beliavsky (USSR, Ukraine and Slovenia)  and Sergei Movsesian (Czech Republic, Slovakia and Armenia). Anyone else?

There are few chess gems named ‘Immortal Game’, one of them is the famous game between Anderssen and Kieseritzky in played in London in 1851.

Vienna 1873 tournament was the last tournament where a pawn could be promoted to a piece which had already been captured.

Mikhail Gurevich from Belgium has the record of been the winner of 4 different national championships: Ukraine (1984), USSR (1985), Belgium (2001) and Turkey (2006).