[Event "Opening Theory #6"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Tarrasch Defense"] [Black "?"] [Result "*"] [ECO "D34"] [Annotator "KS"] [PlyCount "26"] [SourceVersionDate "2022.10.02"] {[%evp 0,26,28,18,13,16,16,4,87,33,43,19,21,20,20,20,7,25,22,17,27,23,23,26,26, 32,23,32,37]} 1. d4 d5 (1... Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 { is a super-trendy line}) 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 (5... Nf6 $1 {Black avoids the 6 dc5! line} 6. g3 (6. Bg5 {In 2011, 6.Bg5 was considered strong, but today the top players defend Black's position successfully after} Be6 $1) 6... Nc6 {and we transpose}) 6. g3 (6. dxc5 $1 {which wasn't considered dangerous before 2011, but now has main line status}) 6... Nf6 7. Bg2 Be7 (7... cxd4 $5 8. Nxd4 Bc5 $1 {The so-called "Dubov's Tarrasch" which doing extremely well both in corr and OTB practice!}) 8. O-O O-O 9. Bg5 c4 $1 10. Ne5 {White's best} Be6 11. e3 (11. b3 h6 $1 {the new concept we introduced in 2011!} 12. Bxf6 Bxf6 13. Nxc6 bxc6 14. bxc4 dxc4 15. e3 {but today this line is considered harmless due to} c5 $3 16. Ne4 (16. Bxa8 Qxa8 17. d5 Bxc3 18. dxe6 Bxa1 19. exf7+ Rxf7 20. Qxa1 Qe4 $1 $132 {Jonckheere, Pannekoek, ICCF 2021 with strong counterplay that gives equality} 21. Qb1 Qd3 22. Rc1 Qd2 23. Rc2 Qd3 24. Qc1 Rd7 (24... Rb7 25. h4 a5 26. Kh2 a4 27. Rd2 Qe4 28. Qc2 Qxc2 29. Rxc2 Kf7 30. Rxc4 Rb2 31. Kg2 Rxa2 32. Rxc5 a3 33. Ra5 Kf6 34. h5 Kf7 35. Kf3 Ra1 36. g4 Ra2 37. Ra6 Ke7 38. e4 Kf7 39. Ke3 Ke7 40. Ra7+ Kf8 41. e5 Ra1 42. Kf4 Ra2 43. f3 Ra1 44. Kf5 a2 45. f4 {1-0 (47) Graf,A (2637)-Fish,G (2523) Altenkirchen 2005}) 25. Kg2 Rf7 26. h4 Qe4+ {1/2-1/2 (26) Jonckheere,P (2296) -Pannekoek,W (2344) ICCF 2021}) 16... cxd4 17. Nxf6+ gxf6 {accepting apparently horrible structure for a lot of dynamism} 18. exd4 Rc8 19. d5 Bd7 { and only White risks here}) 11... h6 12. Bxf6 Bxf6 13. f4 Ne7 $1 {with good practical chances} *