Line with 8. ¤ b3.Van Den Berg John (NED) - Larsen Bent (DEN), Beverwijk (Netherlands)

1959

8. ¤ b3 Let's examine a variation in which White immediately retreats hisknight to b3; taking control of the d5-square, he does not hurry to develop thec1-bishop to e3. 8... ¤ c6 9. ¢ h1 [9. f4 b5! 10. ¥ f3 b4 11. ¤ d5 ¤ d5 12. ed¤ a5=] 9... ¥ e6 10. f4 a5!? In the following lines absence of the bishop at e3turns out to White's benefit: [10... ¤ a5 11. f5 ¥ c4 12. ¤ a5 ¥ e2 13. £ e2 £ a514. g4! £ b4 (14... ¦ ac8 15. g5 ¦ c3? 16. gf• ) 15. g5 ¤ d7 16. a3²ƒ; 10...¦ c8 11. f5! ¥ d7 12. g4! ¤ e5 13. g5²ƒ ¦ c3? 14. gf• ] 11. a4 £ b6! Preventing the ¤ b3-d4-b5 maneuver, Black organizes counterplay on usingthe dark squares. 12. f5 [12. ¤ d5 ¥ d5 13. ed ¤ b4 14. ¥ f3 £ a6! 15. ¥ e2£ b6 16. ¥ f3 £ a6=] 12... ¥ b3 13. cb £ b4!? [13... £ d4!?] 14. ¥ e3 ¤ d7[14... ¤ e4? 15. ¤ d5• ] 15. ¥ c4 ¤ b6!! [15... ¥ c3 16. bc £ c3 17. ¥ h6 ¤ de518. ¥ f8 ¦ f8 19. ¥ d5²] 16. ¤ a2 ¤ c4 17. ¤ b4 ¤ e3 18. £ e2?! [18. ¤ c6 bc19. £ e2 ¤ f1 20. ¦ f1 c5© ] 18... ¤ f1 19. ¤ c6 ¤ g3! 20. hg bc© ƒ 21. b4! ab22. a5 c5 23. ¦ a2 ¥ e5 24. £ c4 ¥ g3 25. b3 ¦ fb8 26. ¢ g1 ¢ g7 27. ¢ f1 ¦ a728. ¢ e2 ¥ e5 29. ¢ f3 ¥ d4 30. g4 g5 31. a6 ¥ e5 32. ¦ a4 ¢ f6 33. ¢ g2 ¦ h834. £ b5?! [34. £ e2³] 34... h5! 35. gh g4! [35... ¦ h5? 36. £ b8] 36. h6 ¦ h6!37. £ b8 ¦ h2 38. ¢ f1 g3 39. £ a7 g2 40. ¢ g1 ¥ d4 41. ¢ h2 g1£ 42. ¢ h3¥ e5 0:1,Van Den Berg - Larsen, Beverwijk 1959 [0:1]

Karpov Anatoly (RUS) - Miles Anthony J (ENG), Bad Lauterberg(Germany) It 1977

9. ¥ g5 Developing his bishop to g5, White hampers the d6-d5 advance inview of ¥ g5xf6. A drawback of this move is that the bishop's absence on theg1-a7 diagonal sometimes may put White to trouble. 9... ¥ e6 10. ¢ h1! [10.f4 b5!] 10... £ c8 11. f4 ¦ d8 With the white bishop on g5 this regrouping doesnot make much sense because the d6-d5 advance is impossible. 12. ¥ f3 (…¤ d5) ¥ c4 13. ¦ f2! e6 14. ¦ d2! A typical rook maneuver. 14... £ c7 15.£ e1! (… £ e1-h4) h6 16. ¥ h4 ¦ d7 17. ¦ ad1² † ƒ” e5? 18. ¥ f6! ¥ f6 19.¥ g4! [19. ¥ e2 ¥ e2 20. ¤ d5 £ d8] 19... ef [19... ¦ dd8 20. ¥ e2! ¥ e2 21.¤ d5• ] 20. ¥ d7 £ d7 21. ¦ d6 £ e7 22. ¦ d7• 1:0,Karpov - Miles, BadLauterberg 1977 [1:0]

Karpov Anatoly (RUS) - Martin Gonzalez Angel (ESP), Las Palmas(Spain) It (cat.9) 1977

10... a6 11. f4 b5 12. ¥ f3 ¦ c8 13. ¤ d5! It turns out that a combination of b7-b5 and ¥ ñ8-å6 is not good as Black is deprived of counterplay involving theexchange on d5. 13... ¤ d7 14. c3 ¤ b6 15. £ e2 ¤ c4 16. ¦ ad1 £ d7 17.¦ fe1 £ a7 18. ¥ h4 ¦ fe8 19. ¤ c1! Thanks to his powerful d5-knight outpostWhite may concentrate his forces for a kingside attack. 19... £ b8 20. ¤ d3 a521. ¤ f2 ¥ d7 22. ¥ g4! ¥ g4 23. ¤ g4 a4 24. a3 £ b7 25. ¦ f1 ¤ d8 26. f5! f627. ¥ f6! ef 28. ¤ gf6 ¥ f6 29. ¤ f6 ¢ f8 30. fg hg 31. £ g4 ¤ f7 [31... ¤ e5 32.¤ d7 ¢ g7 33. ¤ e5 ¦ e5 34. ¦ d6• ] 32. £ g6 ¤ ce5 33. ¤ h7! [...] 1:0,Karpov- Martin, Las Palmas 1977 [33... ¢ e7 34. ¤ g5! ¤ g6 35. ¦ f7 ¢ d8 36.¦ d6• ] [1:0]

Kotronias Vasilios (GRE) - Khalifman Alexander (RUS), Rogatska Slatina(Yugoslavia) Memorial M.Vidmar 1991

10... ¤ a5 With the white bishop on g5, the ¤ ñ6-à5-ñ4 maneuver is alsopossible. Nevertheless, here, unlike in the variation with ¥ e3, after ¤ c4 Blackdoes not win a tempo due to the bishop absence on e3. 11. f4 [11. ¤ d5¥ d5! 12. ed ¦ c8 13. c3 ¤ c4„ ] 11... ¤ c4!? [11... ¦ c8 12. f5 ¥ c4 13. ¥ d3!b5 14. £ e1! (14. £ d2 b4 15. ¤ e2 d5! 16. e5 ¤ e4 17. ¥ e4 de 18. ¦ fd1 ¤ c619. £ e3 £ b6 20. £ e4 ¤ e5„ Larsen - Miles, Las Palmas 1978) 14... b4 15.¤ d1 d5 16. e5 ¦ e8 17. ¤ a5 ¥ d3 18. cd £ a5 19. ¥ d2 ¤ g4 20. d4²Makarichev - Taborov, USSR (ch 1/2) Daugavpils 1978] 12. f5! Starting araging attack on the black king. 12... ¤ b2 13. £ e1! [13. £ c1 ¥ c4] 13... ¥ d714. £ h4 ¦ c8 15. ¦ f3© ƒ» ¦ e8 16. ¦ af1 ¦ c3! 17. ¦ c3 ¤ e4 18. £ e4!? ¥ c319. ¤ d4! d5 [19... £ a5 20. £ b7± ; 19... £ b6!?] 20. £ f3! ¥ d4 21. fg ¥ f6[21... fg 22. £ d5 e6 23. £ d4 £ g5 24. £ d7±] 22. gf ¢ f7 23. ¥ c1! ¢ g7 [23...¤ a4 24. £ h5 ¢ g8 25. ¥ d3• ] 24. ¥ b2 ¦ f8! [24... ¥ b2 25. £ f7 ¢ h8 26.¥ d3 ¥ g7 27. £ h5 h6 28. £ g6• ] 25. ¥ c1 ¢ h8 26. £ d5 ¥ c6 27. £ h5 £ d528. £ d5 ¥ d5 29. c4 ¥ e6 ½ :½ ,Kotronias - Khalifman, Rogatska Slatina 1991[½ :½ ]

Gofshtein Leonid D (ISR) - Gufeld Eduard (GEO), URS 1978

9... a6! Exploiting the knight retreat from d4, Black prepares a quick b7-b5advance which is much more powerful when the white bishop is not present ate3. 10. f4 [10. a4 ¥ e6= (xb4) 11. f4 b5!] 10... b5 11. ¥ f3 b4 [11... ¥ b7!? 12.

¢ h1 ¤ d7› Tal - Gufeld, USSR 1977] 12. ¤ a4 [12. ¤ d5 ¤ d5 13. ed ¤ a5!=]12... ¥ d7! 13. a3 [13. e5 ¤ e8!] 13... ¦ b8 14. ab ¤ b4 15. ¢ h1 [15. e5 de 16.¤ ac5 e4!] 15... £ c7 16. ¤ c3 ¥ e6 17. ¤ a5 [17. ¤ d4 ¥ c4 18. ¦ e1 e5!] 17...¦ fd8! 18. £ e2 d5! 19. ed [19. e5 d4!] 19... ¤ fd5 20. ¤ d5 ¤ d5 21. c3 ¦ b5!22. ¤ c6 £ c6 23. c4 ¦ b2 24. cd ¥ d5 25. £ e7 ¦ c8 26. £ e3 ¥ f3 27. £ f3 £ f328. ¦ f3 ¦ cc2 29. ¦ g1 0:1,Gofshtein - Gufeld, URS 1978 [0:1]

Geller Efim P (RUS) - Knoppert Erik G J (NED), Berlin (Germany) It(open) "Berlin Summer" 1991

9. ¦ e1 This plan has become popular recently. White prepares ¥ å2-f1followed by ¤ ñ3-d5, while the pawn is left on f2, which does not weaken theg1-a7 diagonal and thus allows to develop the bishop to g5. 9... ¥ e6 10.¥ g5! [10. ¥ f1 d5! 11. ¤ c5 ¥ g4 12. f3 d4! 13. ¤ b5 ¥ c8 14. c3 dc 15. ¤ c3£ b6 16. ¤ 3a4 £ c7 17. ¥ e3 ¦ d8 18. ¤ d3 ¤ e5 19. ¦ c1 £ b8= Zagrebelny -Golubev, Moscow 1995] 10... a5 11. ¥ b5! Making use of the rook on e1: thee4 pawn is protected, so there is no need for White to weaken his queensidewith à2-à4. 11... ¤ e5 12. h3 ¦ c8 13. ¤ d5 ¥ d5 14. ed a4!? 15. ¥ a4 ¤ c4 16.¦ b1 £ b6 17. ¤ d2! ¤ b2 18. £ f3ƒ (x¤ b2) £ d4 19. ¥ b3 ¦ fe8 20. ¤ e4! ¤ e421. ¦ e4 £ c5 22. ¥ c1! f5 23. ¦ f4 £ a5 24. £ e3! [24. ¥ b2 ¥ b2 25. ¦ b2 £ e126. ¢ h2 £ c1] 24... ¤ d1 25. £ e2 ¤ c3 26. £ e6 ¢ h8 27. ¥ d2 ¥ e5 28. ¦ e1!¥ f4 29. ¥ f4 ¤ e4 30. ¦ e4! fe 31. ¥ e5! [...] 1:0,Geller - Knoppert, Berlin 1991[31... de 32. £ e5 ¢ g8 33. d6 e6 34. £ a5• ] [1:0]

Geller Efim P (RUS) - Banas Jan (SVK), Cappelle la Grande (France) It(open) 1992

10... h6 11. ¥ h4 g5!? 12. ¥ g3 d5 A risky attempt to liberate at once. 13.¤ c5! d4 14. ¤ b5 ¥ c8 15. ¤ c7 [15. e5!? ¤ d7 16. ¤ d7 ¥ d7 17. ¥ c4 £ b6 18.e6 ¥ e6 19. ¦ e6! fe 20. ¤ c7 ¦ ac8 21. ¥ e6 ¢ h8 22. ¥ c8 ¦ c8 23. ¤ e6 £ b224. ¤ g7 ¢ g7 25. h4© ƒ Romero - Leko, Leon 1993] 15... ¦ b8 16. e5 ¤ h7 17.¤ b5 a6 18. ¤ a3 ¥ e5 19. ¥ e5 ¤ e5 20. ¤ b3 ¤ c6 21. ¥ f3© (x¢ g8) ¥ e6 22.¥ c6 bc 23. £ d3 ¥ b3 24. ab ¤ f6 25. ¤ c4 ¦ a8 26. ¦ a5! ¢ g7 27. ¦ ae5! ¦ a728. £ g3 ¦ g8 29. h4!±‚ ¢ f8 30. hg hg 31. ¦ g5 ¦ d7 32. ¦ g8 ¤ g8 33. £ f4f6 34. ¤ e5! ¦ c7 35. ¤ d3 £ d6 36. £ f5 c5 37. ¤ f4 ¦ c6 38. ¤ e6 1:0,Geller -Banas, Cappelle la Grande 1992 [1:0]

Zagrebelny Sergey (UZB) - Van Der Wiel John T H (NED), Manila(Philippines) Olympiad 1992

9... a6 10. ¥ f1 b5 The queenside pawn advance is Black's most logical plan.11. ¤ d5 ¤ d5 12. ed ¤ e5 13. c3 ¥ b7 [13... ¥ d7!? 14. ¥ g5 ¦ e8 15. £ e2£ b6 16. ¥ e3 £ b7 17. ¦ ad1 a5› Gipslis - Petursson, Valby 1994] 14. a4! Atypical thrust demonstrating that Black's queenside pawn activity has its seamyside. 14... ¤ c4 15. ab ab 16. ¦ a8 ¥ a8 17. ¤ d4 ¥ d5 18. ¤ b5 ¤ b6 19. ¥ e3¥ c6 20. ¤ d4 ¥ d7 21. c4 £ b8 22. b4!²ƒ« (žb4) ¦ c8 23. £ b3 e5 24. ¤ f3 h625. ¤ d2 ¥ e6 26. ¦ a1 £ c7 27. b5! ¤ c4 28. ¥ c4 ¥ c4 29. £ c4 £ c4 30. ¤ c4¦ c4 31. ¦ b1 ¦ c7 32. b6 ¦ b7 33. ¦ c1 ¦ b8 34. ¦ c7 ¥ f6 35. b7 ¥ d8 36.¦ d7 ¢ f8 37. ¥ a7 ¢ e8 38. ¦ f7! 1:0,Zagrebelny - Van Der Wiel, Manila 1992[1:0]

Womacka Mathias (GER) - Kupreichik Viktor D (BLR), GermanyBundesliga 1997/98 1997

11... ¤ d7! A typical maneuver; Black intends to oust the white knight from d5by means of e7-e6. 12. c3 e6! 13. ¤ e3 ¤ b6 14. ¤ d4 ¥ b7 A slightweakness of the d6-pawn is compensated by active positioning of all the blackpieces. 15. ¤ c6 ¥ c6 16. ¤ c2 ¤ a4 17. ¦ b1 £ c7 18. ¥ f4 ¦ fd8 19. £ e2 e5!20. ¥ g3 a5 21. f3 f5!„ 22. ef gf 23. f4 £ f7 24. ¤ e3 ¤ c5 25. ¦ bd1 ¦ d7 26.c4 ¦ b8 27. cb ¥ b5 28. £ b5!? ¦ b5 29. ¥ b5 e4! 30. ¥ c4 ¤ e6 31. ¦ d5 ¢ h832. ¦ f5 £ g6 33. ¦ a5 ¤ c7 34. ¦ d1 ¥ b2 35. ¤ d5 £ h5 36. ¥ b3 e3!µ 37.¥ e1 e2 38. ¦ b1 ¥ d4 39. ¢ h1 £ f5 40. ¦ c1 ¤ d5 41. ¥ d5 £ f4 42. ¦ c8 ¢ g743. ¦ g8 ¢ h6 44. ¥ f3 ¥ e5 45. ¢ g1 £ d4 0:1,Womacka - Kupreichik,Germany 1997 [0:1]

Gelfand Boris (BLR) - Kramnik Vladimir (RUS), Novgorod (Russia) It(cat.19) 1996

11. ¥ g5 h6 12. ¥ h4 ¥ b7 13. a4! Again, this typical thrust turns Black'sadvanced queenside pawns into a target for an attack. [13. ¤ d5?! g5! 14.¥ g3 ¤ d5 15. ed ¤ b4] 13... b4 14. ¤ d5 ¤ d7 15. ¦ b1 ¤ b6 16. £ d2! ¤ a4[16... g5 17. ¥ g3 ¤ a4 18. ¤ b4 ¤ b2 19. ¤ c6 ¥ c6 20. ¤ d4© ] 17. ¤ b4 ¤ b418. £ b4 ¥ c6 19. e5! [19. ¤ d4 ¥ d7 20. f3 a5 21. £ d2=] 19... £ b8 20. £ a3g5?! [20... ¥ e5! 21. ¥ e7 ¦ e8 22. ¥ h4 ¥ b5 23. ¥ g3=] 21. ¥ g3 de 22. ¤ d4!¥ d7 23. £ e7 £ e8 24. £ d6! e4 25. £ b4 a5 26. £ d2 f5 27. ¥ d6! ¦ f6 28. ¥ a3¢ h8 29. b3 [29. ¦ bd1!±ƒ” ] 29... ¤ b6 30. c4 £ e5?! [30... a4! 31. b4 ¦ d6 32.

¥ b2 a3„ ] 31. ¦ bd1 ¦ c8 32. ¤ b5!± ¥ b5 33. ¥ b2! £ c7 34. cb ¦ ff8 35. ¦ c1£ e7 36. ¦ c6! ¦ c6 37. bc ¥ b2 38. £ b2 ¢ h7 39. £ d4 £ b4 40. £ b4 ab 41.¦ d1 ¦ c8 42. ¦ d6 ¢ g7 43. g4 fg 44. c7 ¤ a8 45. ¦ d8 ¦ c7 46. ¦ a8 ¦ c3 47.¥ c4• 1:0,Gelfand - Kramnik, Novgorod 1996 [1:0]

Hachian Melik (ARM) - Tukmakov Vladimir B (UKR), Yerevan (Armenia) It(open) 1996

12... ¤ d7! A multi-purpose maneuver, stabilizing the situation. Black is goingto transfer his knight to c4 via b6, while the d5-square may be covered withå7-å6. 13. ¦ b1 ¤ b6 14. ¤ d5 g5! 15. ¥ g3 ¤ c4 16. c3 e6! 17. ¤ e3 ¤ 4e5›18. £ h5 £ f6 19. ¦ bd1 ¦ d8 20. f4?! gf 21. ¥ h4 £ g6 22. £ g6 fg 23. ¥ d8¤ d8 24. ¤ c2 ¤ b7© ƒ̄ (xe5,e4) 25. ¤ cd4 ¥ d7 26. ¤ f3 ¢ f7 27. ¤ bd4 g528. h3 ¤ c5 29. ¥ e2 ¢ e7 30. ¤ e5 ¥ e5 31. ¤ f3 ¥ g7 32. ¥ d3 e5 33. ¥ c2¥ e6 34. ¦ d2 ¦ c8 35. ¦ ed1 ¦ c6 36. ¥ b1 ¥ f6 37. ¤ e1 ¦ b6 38. ¦ e2 ¥ c439. ¦ ed2 h5 (ž») 40. b3 ¥ e6 41. ¦ e2 a5 42. ¤ d3 g4 43. ¤ c5 dc 44. hg ¥ g445. ¦ ed2 ¥ d1 46. ¦ d1 c4 47. ¥ c2 ¦ c6µ 0:1,Hachian - Tukmakov, Yerevan1996 [0:1]Pawn storm with g2-g4 before castling.

Íåîïðåäåëåí - Íåîïðåäåëåí, Nottingham (England) It 1936

10. g4 []

Alekhin Alexander (RUS) - Botvinnik Mikhail (RUS), Nottingham(England) It 1936

7. ¥ e3 ¤ c6 8. ¤ b3!? Before White has castled, he can connect the knightretreat to b3 with a plan of a raging kingside pawn storm. 8... O-O 9. f4 ¥ e610. g4! Starting the kingside attack and at the same time trying to hamper thed6-d5 advance. In the future White may castle to either side. 10... d5! According to a classical rule which says that one should meet a flank attackwith a counterblow in the center. [10... ¦ c8!?; 10... ¤ a5!?; 10... ¤ d7!?] 11.f5! [11. e5 d4! 12. ¤ d4 (12. ef ¥ f6) 12... ¤ d4 13. ¥ d4 ¤ g4„ Levenfish -Botvinnik, Moscow 1936] 11... ¥ c8 12. ed ¤ b4 13. d6!? [13. fg hg 14. ¥ f3¤ g4 15. ¥ g4 ¥ g4 16. £ g4 ¤ c2 17. ¢ e2 ¤ a1 18. ¦ a1 ¥ c3 19. bc £ d5› ]13... £ d6 [13... ed!? 14. g5 ¥ f5! (14... ¤ e8? 15. f6• x¥ g7) 15. gf ¤ c2 16.¢ f2 £ f6© ƒ] 14. ¥ c5! [14. £ d6 ed 15. g5 ¤ fd5!] 14... £ f4! [14... £ d1? 15.¦ d1 ¤ c6 16. g5±] 15. ¦ f1! £ h2 16. ¥ b4 ¤ g4! 17. ¥ g4 £ g3 18. ¦ f2™[18. ¢ d2? ¥ h6] 18... £ g1 19. ¦ f1 £ g3 20. ¦ f2 £ g1 ½ :½ ,Alekhin -Botvinnik, Nottingham 1936 [½ :½ ]

Fischer Robert J (USA) - Reshevsky Samuel H (USA), New York (USA)Match 1961

13. ¥ f3! An important improvement. 13... gf 14. a3! fg [14... ¤ g4 15. ¥ g4¥ c3 16. bc ¤ d5 17. ¥ h6 e5 18. h4‚ Spassky - Listengarten, USSR 1953] 15.¥ g2! [15. ab gf 16. £ f3 ¥ g4 17. £ g2 ¥ h5! 18. ¦ g1 ¥ g6„ ] 15... ¤ a6 16.£ d3 e6 17. O-O-O! This is the point: White sacrifices two pawns for the sake

of the kingside attack, while his own king has found a safe haven on thequeenside. 17... ¤ d5 18. h3!© ‚ g3! A typical method: Black is trying tokeep the kingside files closed. 19. ¦ hg1 £ d6 20. ¥ d5 ed 21. ¤ d5 ¢ h8 22.¥ f4 £ g6 23. £ d2 ¥ h3! 24. ¦ g3 ¥ g4 25. ¦ h1 ¦ fe8 26. ¤ e3 £ e4? [26...f5!› 27. ¤ g4 fg 28. £ h2 ¦ ac8 29. ¦ g4 ¦ e1!] 27. £ h2 ¥ e6 28. ¦ g7! ¢ g729. £ h6 ¢ g8 [29... ¢ h8 30. ¥ e5!• ] 30. ¦ g1 £ g6 31. ¦ g6 fg 32. ¤ d41:0,Fischer - Reshevsky, New York 1961 [1:0]

Yakovich Yuri (RUS) - Sadler Matthew (ENG), Copenhagen (Denmark) It(open) 1997

16. £ d3 [16. £ d2 ¥ f5 17. h3 g3! 18. O-O-O ¦ c8 19. ¦ hg1 ¥ g6! 20. ¥ f3 b5!21. ¥ h6 ¥ h6 22. £ h6 £ d6 23. ¤ d4 ¦ c3! 24. bc £ a3 25. ¢ d2 ¤ c5ƒHausner - Lutz, Germany (Bundesliga) 1992] 16... £ d6!? One should notthink that the white king is in perfect security on the queenside as g7-bishop'sgreat attacking potential may be revealed at any moment. [16... ¤ d7 17. O-O-O ¤ e5 18. £ e2 £ c7 19. ¥ d4 ¤ g6 20. ¥ g7 £ f4 21. ¢ b1 ¢ g7 22. h3!© ƒYakovich - Lerner, USSR (ch I) Kuibyshev 1986; 16... ¤ c7!? 17. O-O-O ¤ ce818. h3! g3! 19. ¤ e2 ¤ d6 20. ¤ g3 ¥ d7 21. ¥ d4 ¦ c8 22. ¢ b1² Oll - Pigusov,Beijing 1997] 17. O-O-O ¤ h5 18. h3 ¤ f4! 19. £ e4 ¤ g2 20. hg! £ g6 21. £ g2¥ g4 22. ¦ dg1 h5 23. ¤ e2 ¦ ac8 24. ¤ f4 £ f6! 25. ¤ d4 £ e5! 26. ¢ d2 ¦ c2!!27. ¢ c2 [27. ¤ c2 £ b2 28. ¤ h5 ¦ c8 29. £ e4 ¥ c3 30. ¢ d3 £ b5° ] 27...£ e3 28. ¤ h5 ¥ f5! 29. ¤ f5 ¦ c8 30. ¢ b1 £ d3 31. ¢ a2 ¤ b4! 32. ab £ c4 33.¢ b1 £ d3 ½ :½ ,Yakovich - Sadler, Copenhagen 1997 [½ :½ ]Variation with 6. g3.

Íåîïðåäåëåí - Íåîïðåäåëåí,

6. g3 Developing his bishop to g2, White takes control of the center, hampersthe d6-d5 advance and prepares ¤ ñ3- d5. The main drawback of thefianchetto is lack of control over the à6-f1 diagonal in general and the ñ4-square in particular. Furthermore, Black can exploit the pawn on g3 for the h7-h5-h4 advance. Black has two main options: 6...¥ g7and 6...¤ c6. []

Tal Mikhail (LAT) - Hulak Krunoslav (CRO), Novi Sad (Yugoslavia) ChYugoslavia 1974

6... ¥ g7 7. ¥ g2 O-O 8. O-O a6 A simple knight development to c6 is morenatural, and Black does not have to worry about the following line: [8... ¤ c6 9.¤ c6 bc 10. e5 de 11. ¥ c6 ¦ b8 12. £ d8 ¦ d8› ] 9. h3 £ c7 10. ¥ g5 ¤ bd711. £ d2 ¤ b6 12. b3! A typical for this variation method to cover the weak c4-square. 12... ¥ d7 13. ¤ d5! ¤ bd5 14. ed £ c5 15. ¥ e3! £ c7 [15... ¤ d5 16.¤ e6!] 16. c4± † (xe7) e6 17. de fe 18. ¦ ad1 (xd6,xe6) ¦ ad8 19. ¥ g5 e5 20.¤ e2 ¥ c6 21. ¤ c3 ¦ d7 22. ¥ f6! ¥ f6 23. ¥ d5 ¢ g7 24. ¤ e4 ¦ dd8 25. ¢ g2¥ d7 26. f4! ef 27. ¤ f6 ¦ f6 28. £ b2! ¦ df8 29. ¦ f4 ¥ c6 30. ¦ e1! [30. h4¥ d5 31. cd £ e7! 32. ¦ df1 £ e5] 30... £ f7? [30... ¥ d5 31. cd g5±] 31. ¥ c6bc 32. ¦ ef1 £ e6 33. b4! g5 34. ¦ f6 ¦ f6 35. a4! ¢ f7 36. £ f6 £ f6 37. ¦ f6¢ f6 38. a5! ¢ e6 39. b5! ¢ d7 40. b6 h6 41. ¢ f3 1:0,Tal - Hulak, Novi Sad1974 [1:0]

Mieses Jacques - Schlechter Carl, Monte Carlo (Monaco) It 1903

8. h3 ¤ c6! Of course, c6 is the best square for the knight to put pressure onthe white center. 9. ¥ e3 Trying to keep his knight on d4, White lacksdevelopment, which gives Black extra possibilities for counterplay. 9... ¥ d710. O-O [10. ¤ d5 ¤ d5 11. ed ¤ d4! 12. ¥ d4 £ a5! 13. c3 ¥ d4 14. £ d4¥ b5!ƒ‰ ] 10... £ c8 11. ¢ h2 ¤ e5! A typical maneuver, emphasizing the c4-square weakness. 12. ¤ d5 ¤ d5 13. ed ¤ c4 14. ¥ c1 £ c5 15. ¤ b3 £ b6 16.¦ b1 ¦ ac8³ƒ« 17. f4 a5! 18. c3 ¥ f5 19. ¦ a1 a4 20. g4 ¥ d7 21. ¤ d4 ¤ b2 22.¥ b2 £ b2 23. ¦ b1 £ c3 24. ¦ b7 £ d4 25. ¦ d7 £ d1 26. ¦ d1 ¦ c2!µ 27. a3¦ b8! 28. ¦ d3 g5!‚ ® 29. ¢ g3 gf 30. ¢ f3 ¥ e5 31. ¥ f1 ¦ b1 32. ¥ e2 ¦ g133. ¥ d1 ¦ g3 34. ¢ e4 ¦ c4 0:1,Mieses - Schlechter, Monte Carlo 1903[0:1]

Boleslavsky Isaak (BLR) - Polugaevsky Lev (RUS), Leningrad (Russia)Ch URS 1956

8... ¤ c6 9. ¤ de2! Avoiding a knight exchange, White hampers opponent'scounterplay. Another knight retreat with the same intention, 9.¤ b3, is lessprecise because in that case White would not be able to protect the importantñ4-square by means of b2-b3. 9... ¥ d7 10. h3 [10. ¤ d5 ¤ d5 11. ed ¤ e512. ¤ d4 £ b6 13. c3 ¦ ac8 14. £ e2 ¦ fe8 15. ¦ d1 a5„ Tal - Gufeld, USSR1974] 10... ¦ c8 11. ¤ d5 A key move in the system with 6.g3. In the case of¤ f6xd5 White recaptures on d5 with his e-pawn, intending to squeeze Blackafter b2-b3 and ñ2-ñ4, exerting pressure in the center and on the queenside.

11... ¤ e5! 12. ¤ d4 [12. b3? ¤ d5 13. ed ¤ f3!] 12... ¤ c6! 13. ¤ e2 ¤ e5 Black manages to frustrate White's intentions. 14. ¤ ef4 [14. ¤ d4 ¤ c6=; 14.a4!?… ¦ à2,b2-b3] 14... ¤ d5 15. ed [15. ¤ d5 e6 16. ¤ e3 £ e7] 15... £ b6„16. c3 ¦ fe8 17. ¦ e1 £ a6! 18. a4?! [18. £ b3?! ¥ a4!] 18... £ a5! 19. ¤ e2 b520. b4 £ c7 21. a5 ¥ f5µ 22. ¥ e3 ¤ d3 23. ¦ f1 ¤ b2 24. £ b3 ¤ c4 25. ¥ f4£ d7 26. ¢ h2 [26. g4 ¥ d3 27. ¦ fe1 ¤ e5 28. ¥ g3 ¥ e2 29. ¦ e2 ¤ f3 30. ¥ f3¦ c3µ ] 26... ¥ d3 27. ¦ fe1 ¤ e5 28. ¤ d4 [¹ 28. ¥ e5] 28... ¥ c4 29. £ d1 [29.£ b1 ¤ d3 30. ¦ e3 ¤ f4 31. gf e5 32. de feµ ] 29... ¤ d3 30. ¦ e3 ¥ d4 31. cd¤ b4 32. £ d2 ¤ d5 33. ¥ d5 ¥ d5° 0:1,Boleslavsky - Polugaevsky, Leningrad1956 [0:1]

Geller Efim P (RUS) - Parma Bruno (SLO), Bled (Slovenia) It 1961

11. ¥ e3! Methodically preparing ¤ ñ3-d5. 11... £ a5 [11... ¤ e5 12. b3!] 12.¤ d5 ¦ fe8 [12... ¤ d5 13. ed ¤ e5 14. b3±] 13. ¥ d2! [13. c4 b5„ ] 13... £ a614. ¥ c3! ¤ d5 15. ed ¤ e5 16. a4! ¦ c7 17. ¦ e1 ¦ ec8 18. ¢ h1 £ b6 19. ¥ d4£ b4 20. f4! ¦ c2 [20... ¤ c4 21. ¥ g7 ¢ g7 22. £ d4 ¢ g8 23. b3• ] 21. ¥ c3¦ 8c3 22. bc £ b2 23. ¦ b1 £ a2 24. fe ¥ e5 25. ¦ b7• 1:0,Geller - Parma,Bled 1961 [1:0]

Matulovic Milan (YUG) - Parma Bruno (SLO), Novi Sad (Yugoslavia)Tournament 1965

10... £ a5 This time the Slovenian grandmaster improved the previous gamewith the help of a typical Sicilian exchange sacrifice. 11. ¤ d5 [11. ¥ e3 b5!]11... ¤ d5 12. ed ¤ e5 13. ¥ d2 White misses his chance: with the standard

for this variation b2-b3 he could emphasize a shaky position of the black e5-knight; the bishop on d7 deprives the knight the last square for an eventualretreat. [13. b3!… ¤ f3 14. ¥ f3 ¥ a1 15. ¥ d2 £ a2 16. £ a1 £ a1 17. ¦ a1¥ h3 18. g4!±] 13... £ a6 14. ¥ c3 ¦ ac8 15. ¦ e1 ¦ fe8 16. ¢ h2 ¦ c3!! 17. bc[17. ¤ c3 £ b6© ] 17... ¦ c8© ­ (xc2,c3) 18. f4 ¤ c4 19. ¤ d4 ¥ f6 20. ¦ b1¤ b6 21. £ d2 £ a5 22. ¤ e2 ¤ c4 23. £ c1 ¦ c7 24. g4 h6 25. ¥ e4 £ c5 26.¤ d4 ¤ b6 27. ¦ e3 ¤ d5 28. ¥ d5 £ d5µ 29. £ h1 £ c5 30. ¦ b7 e5 31. ¦ c7£ c7 32. fe de 33. ¤ e2 ¥ g5 34. £ e4 £ c5 35. £ a8 ¢ g7 36. ¦ f3 ¥ c6 37.£ c8 £ d5 38. ¦ f2 ¥ e3 39. ¢ g3 ¥ f2 40. ¢ f2 £ g2 41. ¢ e3 ¥ f3 42. ¤ c1£ h3 0:1,Matulovic - Parma, Novi Sad 1965 [0:1]

Sax - Farago Sandor (HUN), Hungary Ch Hungary (team) 1987

10... ¦ b8 A logical idea: Black prepares the b7-b5 advance which will preventthe unpleasant white pawn move ñ2-c4. 11. a4 a6 12. ¤ d5 ¤ e5 [12... ¤ a513. ¦ a2! ¤ d5 14. ed £ c7 15. b3 b5 16. ab ab 17. ¥ e3 ¦ a8 18. ¥ d4² Geller -Parma, Malta (ol) 1980] 13. ¦ a2! With this ugly looking rook maneuver Whiteprepares the key b2-b3 move. 13... b5 14. ab ab 15. b3!² † ¥ c6?! 16. ¤ d4!¥ a8 17. f4 ¤ ed7 18. ¦ a8! ¦ a8 19. ¤ c6 ¤ d5 20. ¤ d8 ¤ c3 21. £ e1 ¦ ad822. e5!± b4 23. e6 ¤ c5 24. ef ¦ f7 25. ¥ e3 ¦ c8 26. h4 ¢ h8 27. ¢ h2 d5 28.¥ c5 ¦ c5 29. £ e6 ¦ f8 30. £ e7 ¦ cc8 31. £ b4 d4 32. ¦ e1 h6 33. £ d6 ¤ a234. £ g6 1:0,Sax - Farago, Hungary 1987 [1:0]

Ivanchuk Vassily (UKR) - Kramnik Vladimir (RUS), Horgen (Switzerland)It (cat.17) 1995

9... ¦ b8! The previous examples have shown that the bishop at d7 hampersBlack's other pieces, therefore the idea to prepare b7-b5 without ¥ d7 is aconsiderable improvement. 10. a4 a6 11. ¤ d5 b5 12. ab ab 13. ¥ e3 [13.¥ g5 ¤ d7! 14. £ c1 ¦ e8! 15. ¦ d1 ¤ c5 16. ¥ h6 ¥ h8› A.Ivanov - Ernst,Gausdal 1991] 13... b4 14. ¦ a2 ¤ g4! 15. ¥ g5 h6 16. ¥ c1 e6! 17. ¤ e3 b3!18. cb ¤ ge5 19. ¥ d2 £ b6 20. ¥ c3 ¥ a6 21. £ d2 ¥ e2 22. £ e2 ¤ d4 23. ¥ d4£ d4 24. ¦ d1 £ c5 25. ¦ a6 ¦ b3 26. ¦ ad6 ¦ b2 27. ¦ 6d2= ½ :½ ,Ivanchuk -Kramnik, Horgen 1995 [½ :½ ]

Stojanov Stanislav (BUL) - Georgiev Vladimir (BUL), Plovdiv (Bulgaria)Ch Bulgaria 1999

White should be careful and not fall into a tricky trap. 13. ¥ e3 b4 14. ¤ d5¤ d7! The d7-square is not occupied by the bishop, which makes possible the¤ f6-d7-c5 maneuver. 15. ¤ d4? ¥ d4!! [15... ¥ b7? 16. ¤ c6 ¥ c6 17. ¥ d4¥ d4 18. £ d4 e5! 19. £ d2 ¥ d5 20. £ d5 ¤ f6 21. £ d3 £ c7 22. ¦ a6 ¦ b6 23.¦ fa1² Slobodjan - Sadler, Germany (Bundesliga) 1999] 16. ¥ d4 e6! 17. ¤ e3e5 18. ¥ a7 ¦ b7 0:1,Stojanov - Georgiev, Plovdiv 1999 [0:1]

Horvath Tamas I (HUN) - Khalifman Alexander (RUS), GermanyBundesliga 1995/96 1995

6... ¤ c6 Attacking the d4-bishop as soon as possible. 7. ¥ g2 ¤ d4! Thewhite queen stance in the center will give Black time for creating counterplayon the queenside. [7... ¥ g7 8. ¤ de2!] 8. £ d4 ¥ g7 9. O-O [9. ¥ e3 O-O 10.

£ d2 ¤ g4! 11. ¥ f4 ¤ e5³ Ivanchuk - Kasparov, Moscow (ol) 1994] 9... O-O10. £ b4 [10. £ d3 ¥ e6 11. ¥ d2 ¦ c8 12. b3 a6 13. ¦ ac1 b5 14. ¤ d5 ¤ d5 15.ed ¥ f5 16. ¥ e4 ¥ e4 17. £ e4 ¥ c3!=] 10... £ c7 [10... a5!? 11. £ b3 ¥ e6 12.¤ d5 a4! 13. £ b7 ¤ d5 14. ed ¥ f5ƒ« Adams - Kramnik, Wijk aan Zee 1998] 11.¥ g5 ¥ e6 12. a4 a5! 13. £ a3 h6 14. ¥ d2 ¤ g4! With the idea of ¤ g4-e5-c4.15. ¦ ac1 £ b6 16. b3 (… ¤ d5) ¥ c3! 17. ¥ c3 ¤ e3! 18. ¦ fe1 ¤ g2 19. ¢ g2f5!‚ ® (x£ a3) 20. £ b2 fe 21. ¥ d4 £ c6 22. ¥ e3 £ d5 23. h3 £ f5 24. ¦ h1£ f3 25. ¢ g1 ¦ f5 26. £ d4 ¦ d5 27. £ b6 ¦ c8 28. c4 ¦ d3 29. ¦ e1 ¦ f8 30.¥ h6 e3 31. ¥ e3 [...] 0:1,Horvath - Khalifman, Germany 1995 [31... ¥ d7…¥ c6° ] [0:1]

Shchekachev Andrei (RUS) - Smirin Ilia (ISR), Kramatorsk (Russia) ChURS (team) (juniors) 1989

7. ¤ de2! White can fight for an advantage avoiding the knight exchange. 7...h5!? 8. h3 [8. ¥ g2 h4!] 8... ¥ d7 9. ¥ g2 £ c8! This is the point of the early¤ ñ6: Black managed to hamper White's kingside castling. 10. b3 [10. ¥ e3¥ g7 11. ¤ d5 ¤ d5 12. ed ¤ e5 13. ¤ d4 ¤ c4 14. ¥ c1 ¤ b6! 15. c3 £ c4„Lipnitsky - Korchnoi, USSR (ch) Lugansk 1955] 10... ¥ g7 11. ¥ b2 O-O 12.£ d2 a5!? 13. ¤ d5 [13. O-O-O?! a4! 14. ¤ d5 ab 15. ab ¦ a2ƒ Matulovic -Velimirovic, Yugoslavia (ch) 1988] 13... ¤ e4! 14. £ c1 ¤ f6 15. ¤ b6 £ c7 16.¤ a8 ¦ a8© ” 17. c4 ¤ b4 18. £ d2 ¥ c6 19. f3?! ¤ e4! 20. fe ¥ b2 21. ¦ d1¥ e5³ƒ 22. O-O b5 23. ¤ f4 bc 24. bc e6 25. h4 £ e7 26. ¦ b1 ¤ a6 27. ¢ h1¤ c5 28. £ e3 £ a7 29. £ e1 ¦ c8 30. £ f2 ¦ c7 31. £ c2 £ a8 32. ¦ be1 ¦ b733. ¦ b1 ¦ b1 34. ¦ b1 ¥ e4 35. ¥ e4 ¤ e4 36. ¢ h2 ¤ f6 37. ¤ d3 ¤ g4 38.¢ h3 £ e4 39. ¤ b4 £ e3 0:1,Shchekachev - Smirin, Kramatorsk 1989 [0:1]

Jansa Vlastimil (CZE) - Nevednichy Vladislav (ROM), Odorheiu Secuiesc(Romania) Zt 1995

12... a5 [12... b5!? 13. ¦ b1 (13. ¤ b5 ¤ e4) 13... ¦ b8 14. ¤ d5 e5! 15. ¤ f6¥ f6 16. h4 ¥ g4 17. ¤ c3 ¥ e6 18. O-O ¤ d4 19. ¦ bc1 ¦ d8› V.Georgiev -Krakops, Ubeda 1997] 13. ¦ b1! An important move. The b2-bishop was atactically weak point in White's position. Now, when it is protected, the ¤ ñ3-d5lunge cannot be prevented. It is interesting to note that White can keep his kingin the center because the position is not opened. 13... ¦ b8 14. ¤ d5! ¤ d515. ed ¤ b4 16. ¥ g7 ¢ g7 17. c3 ¤ a6 18. ¤ f4! ¤ c5 19. O-O!² † e5?! 20. de¤ e6 21. ¤ d5 £ c5 22. c4± ¥ c6 23. ¦ bd1 ¦ be8 24. £ c3 f6 25. h4 ¤ d8 26.¦ d2 b6 27. ¦ fd1 ¦ e5 28. ¤ f4 ¥ g2 29. ¢ g2 ¤ f7 30. £ d3 f5 31. £ f3 £ c832. ¤ d5 £ c6 33. £ c3 ¢ h6 34. £ d4 b5 35. cb £ b5 36. ¢ h2 ¦ c8 37. ¤ e3¦ ce8 38. ¤ c4 ¦ e4 39. £ f6 ¤ e5 40. ¤ e5 £ e5 41. £ g5 ¢ g7 42. ¦ d6 ¦ e643. ¦ d7 ¦ e7 44. ¦ 1d6 1:0,Jansa - Nevednichy, Odorheiu Secuiesc 1995[1:0]

Hansen Sune Berg - Petursson Margeir, Reykjavik zt 1995

10. a4! /I 10... b4 11. ¤ d5 /2 11... ¥ b7 12. ¥ g5 e6 13. ¤ f6 ¥ f6 14. ¥ f6 £ f615. £ d2 a5 16. ¤ b5 ¤ c6 17. ¤ d6 ¦ ad8 18. ¦ ad1± [½ :½ ]

Romanovsky Petr (RUS) - Rabinovich Ilia (RUS), Moscow (Russia) It1935

20. ¥ b5! /3 20... ¥ h6 21. ¥ d7 ¥ g5 22. ed• [1:0]Fischer Robert J (USA) - Reshevsky Samuel H (USA), New York (USA)

1958

10. ¥ f7!! /I 10... ¢ f7 [10... ¦ f7 11. ¤ e6!• /I] 11. ¤ e6!• /5 [1:0]Stein Leonid (UKR) - Pelikan Jiri (CZE), Mar del Plata (Argentina) It 1966

15. ¤ e7! /2 [or 15. ¥ b5 /B] 15... ¥ e6 [15... ¤ e7 16. ¦ b3 /2 16... £ a4 17.¥ b5 /1 17... £ a2 18. ¥ d4• /2] 16. ¤ d5 ¤ a5 [¹ 16... ¥ d5 17. ¥ d5 ¤ d518. ed ¤ e5 19. ¥ d4 f6 20. f4 ¤ g4 21. h3 ¤ h6 22. f5!‚ ] 17. ¥ d4! /2 17...¤ c4 18. £ g5 ¤ e5 19. £ f6 ¢ h6 20. f4 ¦ he8 21. £ g5 [1:0]