National Master Caleb Denby talks all about the Ragozin. See games from the world’s best, and even one of Caleb’s own.
2020.03.30
Wesley So vs Magnus Carlsen, Bilbao Masters (2016): D38 Queen’s Gambit Declined, Ragozin variation
https://www.chessgames.com/perl/chessgame?gid=1826288
Viktor Laznicka vs Shakhriyar Mamedyarov, World Cup (2009): D38 Queen’s Gambit Declined, Ragozin variation
https://www.chessgames.com/perl/chessgame?gid=1565540
Tania Sachdev vs Vitali Matveyevich Golod, Gibtelecom (2009): D38 Queen’s Gambit Declined, Ragozin variation
https://www.chessgames.com/perl/chessgame?gid=1532171
Alex Zhang vs. Caleb Denby, 2020: D38 Queen’s Gambit Declined, Ragozin variation