[Event "GDSB-ch08 (GroƟdeutscher SB) (ch-33)"] [Site "Bad Oeynhausen"] [Date "1941.??.??"] [Round "4"] [White "Lachmann, Hans Georg"] [Black "Junge, Klaus"] [Result "0-1"] [ECO "D31"] [Annotator "MJDonnelly"] [PlyCount "106"] [EventDate "1941.08.03"] [EventType "tourn"] [EventRounds "15"] [EventCountry "GER"] [SourceTitle "EXT 2001"] [Source "ChessBase"] [SourceDate "2000.11.22"] [SourceVersion "1"] [SourceVersionDate "2000.11.22"] [SourceQuality "1"] {[%evp 0,106,25,13,14,0,10,6,51,46,39,45,56,50,23,20,37,37,127,113,117,69,92, 88,79,0,0,-20,3,3,-12,-50,-49,-90,-32,-35,-22,-22,51,121,95,135,135,156,124,22, 22,22,0,117,136,143,141,13,-4,-17,38,31,41,-17,44,-41,85,-51,-46,-29,-14,-14, 75,63,45,-5,-5,0,9,-42,-48,-48,52,52,41,5,34,34,6,8,8,28,20,20,0,-217,-236, -232,-253,-255,-317,-345,-371,-490,-524,-530,-499,-575,-597,-601,-619,-909, -909]} 1. d4 d5 2. c4 e6 3. Nc3 c6 {A pawn formation that is nowadays known as the Triangle System, which may lead to several complex sub-variations of the Semi-Slav, and has in recent years been the focus of much analytical attention. } 4. Nf3 dxc4 {The enigmatic Noteboom variation also a highly complex variation.} 5. a4 {Less popular but by no means less complex are} (5. e4) ({and } 5. e3) 5... Bb4 6. e3 b5 7. Bd2 Qb6 {A move which modern theoretical works classify as a side-line and which was rarely played before WW2. Instead, another pawn move heads to the main lines of the Noteboom variation:} (7... a5 {with the idea of} 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 11. bxc4 b4 12. Bb2 Nf6 {producing a highly unbalanced game.}) 8. Ne5 (8. axb5 {is often a strong move against Black's c4/b5/c6 set up that also occurs in several other openings but here the Black queen on b6 and the Bb4 eliminate any real issues as in the line } cxb5 9. b3 Bxc3 10. Bxc3 b4) (8. Ne4 $5 {is another interesting White option when after} Be7 9. Ne5 {Pachman considers White has attacking chances.}) 8... Qb7 {This looks an unusual position for the queen which Junge has also played in another game but there is a deep point to it. More common thought is} (8... Nf6 {allowing White to recover the pawn whilst Black quickly castles} 9. axb5 cxb5 10. b3 O-O 11. bxc4 bxc4 {one example being Komljenovic-Granda Zugina, Burriano Open 1990.}) (8... Be7 {appears innocent enough but White obtains a winning game with} 9. axb5 {since if Black recaptures by} cxb5 10. b3 cxb3 ( 10... b4 {now doesn't work for Black due to} 11. Nxc4 Qd8 12. Nb5 $18) 11. Qf3 $18 ({instead after} 11. Qxb3 {Herraiz Hidaigo-Braga, Albecete Open 1992, Black was still going following} b4 12. Ne4 $6 (12. Nd5 $1) 12... a5)) (8... Nd7 {is another playable line for Black when one old game went} 9. axb5 Nxe5 10. dxe5 cxb5 11. Ne4 Be7 12. Qg4 Kf8 13. Qf4 a5 14. Be2 Bb7 15. O-O h5 16. Ng5 Bxg5 17. Qxg5 Rh6 18. e4 {when Black is still Ok but after} h4 $2 {is struck by "lightning from a clear sky" with} 19. Rxa5 f6 (19... Rxa5 20. Bb4+ Ke8 21. Qxg7 $18) 20. exf6 Nxf6 21. Qxb5 {1:0 Alekhine-Kashdan, Clock Consultants game New York 1929.}) (8... Bb7 {is often the residence for Black's queen's bishop in this type of pawn formation but here the downside of the queen being on b6 is shown by} 9. Ne4 Be7 $2 10. axb5 cxb5 11. Ba5 Qa6 (11... Bb4+ {is no better due to} 12. Bxb4 Bxe4 13. Qg4 Bg6 14. Qf3 {1:0 Boleslawski-Peperle, EU-ch ICCF 1963.}) 12. Bc7 (12. Nc5 Bxc5 13. dxc5 {wins quickly}) 12... Bxe4 13. Rxa6 Bb4+ 14. Ke2 Nxa6 15. Ba5 f6 16. f3 Bb7 $2 {and now} 17. Nxc4 {is winning for White as in Musin-Sukhachev, Russian U14-ch 2004.}) 9. Ne4 Be7 10. Qg4 ({Another Junge game went} 10. b3 {but with White avoiding the chance to play axb5 meant Black got away with} cxb3 11. Qxb3 Nd7 12. Be2 bxa4 13. Qxa4 Nxe5 14. dxe5 Nh6 15. O-O O-O 16. Ba5 {and a draw was agreed athough White is still much better in Hahn-Junge, Krakov 1941.}) 10... g6 11. Qf4 f6 12. Ng4 g5 13. Nxg5 {A fine move after which Black is in some difficulties. Instead} (13. Ngxf6+ {seems to win but Black has the odd defence} Nxf6 14. Nxf6+ Kf7 $1 {and there is no decisive White checks.}) 13... h5 ({If} 13... fxg5 {then} 14. Qe5 {hits the Rh8.}) 14. Ne5 {Now neither knight can be captured because of Qf7+ followed by Ba5+ winning the Black queen.} Nh6 15. Be2 $6 {Developing and ultimately threatening to place the bishop on the active square f3 lined up against c6, b7 and a8. However, the move gives Black a slight respite to begin the fight back. Instead, White could have played} (15. Qe4 {exploiting the hole on g6 with a very strong attack. Some possible lines are} fxe5 (15... fxg5 16. Qg6+ Kf8 17. Qxh5 Nd7 (17... Rh7 18. h4 g4 19. e4 $18) 18. Ng6+ Kg7 19. Nxh8 $18) 16. Qg6+ Kf8 (16... Kd8 17. Ba5+) (16... Kd7 17. Qxe6+ Kd8 18. Ba5+) 17. Nh7+ Rxh7 18. Qxh7 Ng8 19. dxe5 {and Black is just about hanging on in an inferior position.}) 15... Nf5 16. Ngf3 ({Poor is} 16. Nef7 fxg5 17. Nxg5 $15) ({whilst } 16. Ngf7 fxe5 17. Nxe5 {transposes to the main game.}) 16... fxe5 17. Nxe5 Bd6 18. axb5 cxb5 (18... Qg7 {is a better defence, guarding g6 but Black possibly may have already planned an astounding counter to White's bishop move. }) 19. Bf3 Nc6 $5 20. Qg5 {The best reply still eyeing the g6 square. Alternatively White actually loses after} (20. Nxc6 Bxf4 21. Ne5 Qc7 22. Bxa8 Bxe5 $19) ({and other captures just leave Black at least equal and out of any danger} 20. Bxc6+ Qxc6 21. Nxc6 Bxf4 22. exf4 Bb7) ({or} 20. Qxf5 exf5 21. Bxc6+ Qxc6 22. Nxc6 Bb7) 20... Bxe5 21. dxe5 Nfe7 22. Qg7 $6 {Too eager. White plays a move that gives Black a tempo to activate the rook.} (22. O-O-O { is instead very strong trapping the Black king in the centre of the board.}) 22... Rg8 23. Qh7 Rf8 $2 {Probably planning to get rid of the annoying bishop with Rxf3 but this move loses a tempo in a double edged position.} 24. Rd1 { The right idea so also very strong is} (24. O-O-O) (24. Ba5 {also appears very strong but the idea of Rf8xf3 now works fine} Rxf3 (24... Nxa5 {gains a lot of material for the queen but loses to simply} 25. Bxb7 Nxb7 26. O-O) 25. gxf3 Nxa5 26. Rd1 (26. Qxh5+ Kd8 27. Rxa5 Nc6 {is also no problem for Black as the king can head for b6.}) (26. Rxa5 {is, however, a disaster as Black wins via} Qxf3 27. Rg1 Bb7) 26... Nd5 {and Black's game holds nicely together.}) 24... Bd7 (24... Rxf3 {with the rook on d1, and the possibility of a check on the back rank by the queen, this no longer works} 25. gxf3 Bd7 (25... Nd5 26. Qh8+ Kd7 27. e4 $18) 26. Qh8+ Kf7 27. Qxh5+ Kf8 28. Rg1 {with a winning attack against the open king.}) 25. Qxh5+ $6 {White remains much better after this pawn grab with check but Black can battle on. Very strong was} (25. Ba5 Nxa5 26. Bxb7 Nxb7 27. O-O {and the Black king remains stuck in the centre.}) 25... Kd8 26. Qh6 Re8 27. Bb4 Kc8 28. Bd6 a5 29. Qf4 Nf5 30. h4 {Yet another game where Junge faced a passed h-pawn rushing to queen.} Nxd6 31. exd6 e5 32. Qe4 a4 33. h5 Qa6 34. h6 Kb7 35. Qh7 $6 {Not optimum as it blocks the advance of the pawn. White has more chances to win after the immediate advance} (35. h7) ( {or adding another pawn heading to queen with} 35. g4) 35... Rad8 36. Bg4 Kc8 37. Bxd7+ Rxd7 38. Qe4 Nd8 39. h7 Nf7 40. f4 Qb7 41. Rd5 {Correctly avoiding the queen exchange which hands Black the advantage following} (41. Qxb7+ Kxb7 42. fxe5 Rxe5 43. h8=Q Nxh8 44. Rxh8 Rxe3+) 41... Rxd6 42. Rc5+ Kb8 43. Qxb7+ Kxb7 44. Rxb5+ Kc6 {The constant threat of queening the pawn means the game is now more or less balanced despite Black's extra piece. Unfortunately White now misjudges the position and tries an apparently winning shot to try and push a pawn through to queen.} 45. Rxe5 $4 (45. Rb4 Kc5 46. Rxa4 exf4 47. Rh5+ Kb6 48. Rb4+ Ka6 49. Ra4+ $11 {is a draw by perpetual.}) 45... Nxe5 46. fxe5 Rdd8 { Just in time to stop the h-pawn queening.} 47. e4 ({Or if} 47. g4 Kd5 48. g5 Kxe5 49. g6 Kf6 {is just in time to stop g7 so Black wins.}) 47... Rh8 48. Ke2 Rd7 49. Ke3 Rhxh7 50. Rg1 Rb7 51. Kd4 Rxb2 52. Kxc4 a3 53. g4 a2 {Another remarkably difficult game. White played a good attacking game and Junge was in serious difficulties at several stages. Playing some ingenious moves though Junge held White off and kept his head above the water in the complexities for long enough until White self-destructed.} 0-1