1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8b4 The Ragozin Defense always makes its appearance in elite tournaments. 5. d1a4 This was my favorite move when I faced the Ragozin. The idea is to bring the black knight to c6, where it is well known that it is not well placed, in front of the c-pawn, in positions with this structure. 5... b8c6  6. e2e3  6... e8g8  7. a4c2  7... c6e7 As I wrote before, Black's knight is not well on c6 and making sense of this piece is critical for Black. Many try this by setting up the e5-break, either with 7...Re8 or capturing on c4 and then removing the bishop to d6. Others ignore this problem for the time being and develop the queenside with 7...b6. 7...Ne7 is a bit more difficult to explain, but I think the idea is to also play with b6, but having the option to capture with the knight on d5 or simply not leave the knight unprotected on c6. If that doesn't sound very convincing, it's because I really don't understand this move well enough. 8. c1d2  8... b7b6  9. a2a3  9... b4c3  10. d2c3  10... c8a6 [%c_effect a6;square;a6;type;Inaccuracy;persistent;true] This move is superficial and it's strange that Gukesh gets in trouble so quickly in one of the most important lines of the Ragozin—something went terribly wrong in his preparation. 11. b2b3 