The database was released on November 22, 2022. 17 weeks later it was March 22. So the current update might not be update 20, it should be update 18 ?

@chessica your speculation is not well found. Look at the source of the games. The last games are of 19/03/2023. It is indeed update 20…

Anyone has update 18 and 19 kindly please - thanks in advance