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[what is this?]

2021 World Championship Magnus vs. Nepo 1 game, 2021 2xFienchetto 1 game, 2002 Albin CG Response to QGD 3 games, 2017-2018 Alexes Games 2 games, 1858-1953 Bird"s-From's Gambit Line 4 games, 2005-2018 Bird's Opening 7 games, 2017-2021 Double Fianchetto: KIA 1 game, 2016 Dutch#1 1 game, 2018 English Opening-A24 Accelerated Variation 5 games, 2000-2022 Famous Games 1 game, 1956 Grunfeld & KID Both Grunfeld and Neo-Gruenfeld 1.d4 Nf6 4 games, 2017 Hippo A00 9 games, 1862-2022 Norwegian rat 1 game, 2019 Owen Defense 1 game, 2007 Polish 1 game, 2009 Polish: outflank Var 3 games, 1997-2016 QID Offbeat flank opening for Black 18 games, 1921-2018 Sicilian 1 game, 2022