[Event ""] [White "Russian System"] [Black "Grünfeld Defence"] [Site ""] [Round ""] [Annotator "Nagesh Havanur"] [Result "*"] [Date "2023.??.??"] [PlyCount "48"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 {The Grünfeld Defence.} 4. Nf3 Bg7 5. Qb3 { The Russian System named after the Russian players, Botvinnik and others who played this variation. It became a battleground in Kasparov-Karpov World Championship Matches with Karpov playing White.} dxc4 {Forced. A move like 5... c6 would give Black a passive position.} 6. Qxc4 O-O 7. e4 {Now White has a full pawn centre and it would be challenged.} Nc6 8. Be2 e5 $1 {Offering a pawn for freeing the iposition.} (8... Nd7 {is the older line.} )(8... Bg4 { is standard.} )9. d5 ({If} 9. dxe5 Ng4 $1 10. Nd5 Be6 11. O-O Ngxe5 12. Nxe5 Nxe5 13. Qxc7 Bxd5 14. Qxd8 Rfxd8 15. exd5 Rxd5 16. Be3 Nc6 {1/2 -1/2 (36 moves), Basso, Pier Luigi-Rakotomaharo,FY Antenaina, Paleochora 2021.} )Nd4 10. Nxd4 exd4 11. Qxd4 c6 12. Qc4 (12. d6 Re8 13. Qd3 b5 14. f3 Re6 15. Qc2 Qxd6 {with annotations by Petra Papp elsewhere in this CBM 211 Review} )cxd5 ({The other line is better known.} 12... b5 $1 13. Qxc6 Bd7 14. Qd6 Re8 15. Bg5 b4 16. Qxb4 Nxd5 17. Nxd5 Qxg5 18. O-O Rab8 19. Qd6 Bh3 $13 {And Black has enough compensation for the pawn with dynamic play.} )13. exd5 b5 $3 { first seen in an ICCF corr.game.} 14. Qxb5 ({Or} 14. Nxb5 Nxd5 15. O-O a6 16. Nc3 Nxc3 17. bxc3 Be6 18. Qa4 Bxc3 19. Rb1 Qa5 $11 )a5 15. Qc5 (15. Qc6 Bf5 16. O-O Rc8 17. Qa6 Ne4 18. Be3 Nxc3 19. bxc3 Qxd5 20. c4 Qe6 21. Qxe6 Bxe6 $44 {1/2 -1/2 (33 moves), Martin Sanchez, Carlos-Dijon, Jean Michel, corr.ICCF 2013} )a4 16. O-O a3 17. bxa3 Nd7 18. Qb4 Rb8 19. Qc4 Nb6 20. Qd3 Re8 21. Bd2 Nxd5 22. Nxd5 Bf5 23. Qc4 Rc8 24. Qb5 Rb8 $11 {Very fine anlysis by Petra Papp in this issue (CBM 211).} *