[Event "Olympiad-16 Final A"] [Site "Tel Aviv"] [Date "1964.11.19"] [Round "9"] [White "Pachman, Ludek"] [Black "Unzicker, Wolfgang"] [Result "1/2-1/2"] [ECO "E57"] [Annotator "MJDonnelly"] [PlyCount "81"] [EventDate "1964.11.10"] [EventType "team-tourn"] [EventRounds "13"] [EventCountry "ISR"] [Source "ChessBase"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] [WhiteTeam "Czechoslovakia"] [BlackTeam "German Fed Rep"] [WhiteTeamCountry "CSR"] [BlackTeamCountry "GER"] {[%evp 0,81,19,-12,-9,-12,-4,-4,9,9,37,44,41,-2,24,1,10,17,27,27,27,14,68,47, 60,37,48,24,11,12,-6,-17,28,-32,-12,-19,-4,2,23,-17,9,20,32,31,89,50,66,11,-10, 0,38,25,35,32,32,26,31,-58,-66,-20,38,19,17,41,145,105,184,209,90,112,124,124, 104,71,83,90,90,90,90,0,0,0,0,0]} 1. c4 {Although the game starts with the English it soon transposes to a regular Queen's Gambit Opening.} Nf6 2. Nc3 e6 3. Nf3 ({Alternatively,} 3. e4 {the so-called Flohr-Mikenas variation takes the game in a very different direction. Pachman as Black has faced this a few times:} c5 (3... d5 {the other main Black reply, was chosen instead in a later game} 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 {Schulz-Pachman, Sindelfinger 1984.}) 4. Nf3 (4. g3 d5 5. cxd5 exd5 6. exd5 Nxd5 7. Bg2 Nb4 {Namzhil-Pachman, Olympiad-14 Preliminaries C.}) 4... Nc6 5. d4 cxd4 6. Nxd4 Bb4 { Kottnauer-Pachman, Zlin 1943, noting the opening moves have now resulted in a Sicilian Defence!}) 3... d5 4. d4 c5 5. cxd5 Nxd5 {Black prefers the Semi-Tarrasch which used to be quite popular decades ago and was also an opening that Pachman himself often played. However, the reputation of this opening suffered greatly due to the oustanding games Spassky-Petrosian, W-ch 1969, and Polugaevsky-Tal, Moscow 1969. Both were tremendous wins for the player of the White pieces, and both were widely published. In recent years this neglect of the Semi-Tarrasch has been addressed in a number of new theory books on this opening and it has nowadays regained some of its popularity. Note that with the knight already on f6, and the queen's knight still on b8, Black is generally regarded to have an inferior Tarrasch Defence if the e6 pawn recaptures on d5 instead of the knight:} (5... exd5 6. Bg5 Be6 7. e3 Nc6 8. Bb5 Rc8 9. O-O c4 10. e4 {Ehlvest-Rohonyan, Virginia Beach 2007. However, databases show that a large number of players rated above 2400, or even 2500, have played the variation 5...exd5 in many games. Black has in fact better moves than the line given in particular substituting c4 with a6.}) 6. e3 { The line chosen by Botvinnik in his famous win against Alekhine, AVRO 1938, and one which Pachman had considerable experience with both the White and Black pieces, before and also after, the main game.} (6. e4 {is the other main variation when Kramnik, in particular, has often played} Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ {Another famous game, thought at the time to easily equalise for Black went} (8... Nc6 9. Bc4 b5 $1 {Spassky-Fischer, W-ch, Reykjavic 1972.})) 6... Nc6 (6... cxd4 {is yet another Black option which can lead to a position classified as a Panov-Botvinik Attack in the Caro-Kann Defence.} 7. exd4 Be7 8. Bd3 Nc6 9. O-O O-O 10. Re1 Bd7 11. a3 Rc8 {an example being Najdorf-Pachman, Interzonal 1955.}) 7. Bc4 cxd4 8. exd4 Be7 9. O-O O-O 10. Re1 {Possibly the most purposeful move. The rook controls some key squares on the half-open e-file, especially e5. It may even, in certain circumstances, move from the third, fourth or fifth rank to the g- or h-files in support of a king's-side attack.} (10. Bxd5 {is a curious idea that is sometimes played but just seems to liquidate the game into one where a draw is very likely. For example, after} exd5 11. Qb3 Bg4 12. Qxb7 Nb4 {Zaitsev-Tal, Tallin 1971.} ({as well as after} 12... Rc8 {Gazic-Schmitz, Oberliga NRW 2012. Black has enough play for the pawn in both cases.})) 10... Nf6 {Only one of Black's many available options in a position which is very rich in possibilities. Others include} (10... Nxc3 11. bxc3 b6 12. Bd3 Bb7 {when White has the interesting sacrifice of} 13. h4 { Anand-Timman, Alekhine Memorial 1992.} (13. Qc2 {seems less effective after} g6 14. Qd2 Na5 15. Ne5 Bf6 {Bronstein-Pachman, Interzonal 1955.})) ({or} 10... Bf6 11. Ne4 b6 12. Nxf6+ Nxf6 13. Bg5 Bb7 {Tomashevsky-Howell, W-ch Rapid Doha 2016.}) ({and also} 10... a6 11. Bb3 Nxc3 12. bxc3 b5 {Sokolov-Karpov, Linares 1987.}) 11. a3 {A key move in these IQP pawn structures. The pawn controls b4 preventing Nb4 or Bb4, and the square a2 is made available as a secure retreat for the Bc4. From a2 the bishop may support a d5 break at some point, or drop back to b1 when the White queen may go to c2 or d3, unharried by Nb4, with potential threats against h7. This all seems very positive for White but Black has a range of, initially defensive options, and White does remain with an isolated d4 pawn which may turn out weak in a resulting ending.} a6 {Yet again Black has many options to choose from and this move as well as} (11... b6 { are the most popular. One high level game shows Black's set up can be quite robust:} 12. Bg5 Bb7 13. Qd3 h6 14. Bxf6 Bxf6 15. Rad1 Ne7 16. Ne4 Nf5 17. Ba2 Re8 18. Bb1 g6 {when Black is better as in Short-Vallejo Pons, Madrid Neoclassical Masters rapid 2016.}) 12. Bg5 b5 13. Ba2 Bb7 14. Qd3 Rc8 (14... b4 {is another good line immediately disrupting White's attacking build up but at the slight cost of loosening Black's own queens-side formation}) 15. Rad1 ({ In a latter game Pachman softened up the Black king's pawn cover with} 15. Bb1 g6 16. Ba2 {Pachman-Zier,GER-ch 61 1984, although this wasn't too great an issue and the game was soon drawn.}) 15... Re8 16. Bb1 g6 17. Ba2 {The bishop returns to its secure square to keep control of d5 and thus still allow for the possibility of a d5 pawn break.} ({Instead} 17. h4 {, unlike in earlier variations, proved not very effective in the following game} Na5 18. Ne5 Nc4 19. Nxc4 bxc4 20. Qg3 Nh5 {1/2:1/2 Malich-Korgius, Chigorin Memorial Sochi 1965 and I imagine Chigorin may not have been impressive with the short game either.}) 17... Na5 {This is allows White to continue build up an attacking formation hence the disruptive move} (17... b4 {Langeweg-Tseshkovsky, Chigorin Memorial 1972 looks a better option.}) (17... Ba8 {puts the bishop out of danger but White can use the extra tempo to initiate a strong attack with} 18. h4 {as in Kalod-Spacek, CZE-Tch 2015.}) (17... Qc7 {can be strongly met by the central breakthrough} 18. d5 {Hungaski-Pena, Pan American U-20 Ch Riobamba 2007.}) 18. Ne5 Nd7 {A tricky position for Black who decides to try and exchange pieces, in particular the aggressively placed e5 knight. However, this allow White to initiate a spectacular attack commencing with a classic sacrifice. A better option seems to be exchanging pieces in a diffrent way via} (18... Bd5 19. Bxf6 Bxf6 20. Bxd5 exd5 21. Qf3 Qd6 22. Nxd5 Bxe5 23. dxe5 Rxe5 {and although White is better Black is still in the game. A curious idea, that would have needed to be seen some moves back, was that} 24. Nf6+ {doesn't in fact win for White due to} Kg7 25. Nh5+ (25. Rxd6 {winning the queen fails to} Rxe1#) 25... Kg8 26. Nf6+ $11) 19. Nxf7 Kxf7 20. Bxe6+ Kg7 21. Bf4 {Retaining pieces is the usual way to play an attacking game but here it oddly allows Black to equalise. White keeps and edge with} (21. Bxe7 Rxe7 ({or} 21... Qxe7 22. d5) 22. d5 $16) 21... Bf6 (21... Rf8 {trying to activate the rook with tempo can be well met by} 22. Qe3) ({but} 21... Nc4 {was the optimum move with the annoying threat of Nxb2 which is rather strong if White plays 22.d5 and the apparently strong} 22. Qh3 {can be met by} Nf6 {securing an equal game since if} 23. Bxc8 Bxc8 24. Qh6+ Kg8 {and Black still threatens Nxb2 as well as the powerful Ng4.}) 22. Qh3 Nf8 23. Qh6+ Kh8 24. Bxc8 Qxc8 (24... Bxc8 { fails to} 25. Bc7 Rxe1+ 26. Rxe1 {and White wins since Black is unable to play} Qxc7 {due to} 27. Qxf8#) 25. Rxe8 {Eliminating the potential pawn grab Bxd4 but a stronger way was} (25. Be5 Bxe5 26. Rxe5 Nc4 (26... Rxe5 27. dxe5 $16) 27. Rxe8 Qxe8 28. b3 Nxa3 29. Qd2 {with the advantage as Black's knight remains off-side.}) 25... Qxe8 26. Be5 Bxe5 27. dxe5 Nc4 28. Re1 {Now Black defends against White's slight pressure well so White keeps more chances by jettisoning the chance to play Qxf8 mate, and moving the queen to a more central position by} (28. Qf4) 28... Kg8 29. e6 (29. f4 {instead is good for Back after} Qc6 30. Qh3 Qc5+ 31. Kh1 Qf2 $17) 29... Qc6 {The most natural threatening mate on g2. The pawn grab} (29... Nxe6 {was in fact also playable despite seeming risky after} 30. Qh3 Bc8 31. Nd5 (31. Qh4 Nb6 (31... Nxb2 32. Nd5 $18)) 31... Qd8 {with an unclear position and chances for both players.}) 30. Qh3 Bc8 31. Ne4 Bxe6 {This seems the most obvious line taking the pawn and attacking the queen but} (31... Nxe6 {was preferable with more chances of an equal game.}) 32. Nf6+ {When combined with White's next an imaginative attacking plan.} Kf7 33. Qh6 Bh3 {Black counters with a tactical shot in turn but this should loose.} ({No good is} 33... Kxf6 {as White wins easily with} 34. Qxf8+ Kg5 ({or} 34... Bf7 35. Qh8+ Kg5 36. h4+) 35. h4+ Kxh4 36. Qh6+ Kg4 37. Rxe6 Qxe6 38. Qh3+) ({but} 33... Qd6 {guarding f8, and providing for possible back-rank mates, holds on even though White remains better after} 34. Nxh7 Nxh7 35. Qxh7+ Kf6) 34. Ne4 Bf5 35. Ng5+ Kg8 36. Nxh7 {This looks good but the following rather complex line should win} (36. Re7 Qf6 37. Rf7 ({Not} 37. Re8 Qg7 38. Qxh7+ ({and} 38. Qxg7+ Kxg7 39. Ra8 Nxb2 40. Rxa6 {is only level.}) 38... Qxh7 39. Nxh7 Kxh7 40. Rxf8 Nxb2 41. Ra8 Nc4 42. Rxa6 Bc2 { and Black should hold the ending fairly comfortably.}) 37... Qxf7 38. Nxf7 Kxf7 39. Qc1 Nd7 40. b3 Ncb6 41. Qc7 {and White wins since although he has only a slight material advantage, the queen is extremely active and can readily mop up Black's weak a6 pawn. In addition, White can safely centralise his king as well as advance the 3 to 2 kings-side pawn majority to create further problems for Black.}) 36... Qd6 37. Nxf8 Qxf8 38. Qg5 Qd6 39. g4 $6 {After a well played game White finally makes a move that whilst it seems to keep the intiatives allows Black tactical chances based on the weakened f3 square. Safer and keeping a healthy edge was simply} (39. h3 {since if} Nxb2 {then} 40. g4 {works very well after} Bd7 41. Qe7 Qxe7 42. Rxe7 $18 {Blacks coordination between pieces is lost as is the g6 and/or a6 pawns.}) 39... Bd7 40. Qd8+ { Now the game ends is an unusual type of repetition.} Kf7 41. Qh4 ({After this Black can force White to repeat:} 41. Qh4 Kg8 {controlling e7} ({but certianly not} 41... Nxb2 42. Qh7+ Kf6 43. Qh8+ $18) 42. h3 Nd2 {the strong threat is just Nf3+.} 43. Qd8+ Kf7 $11 ({but again not} 43... Kg7 44. Re7+ $18 {A very complicated game that Pachman should have won against a top flight GM.})) 1/2-1/2