[Event "Brussels"] [Site "?"] [Round "0"] [White "Landau"] [Black "Dunkelblum"] [Result "1-0"] [ECO "D11"] [Opening "Slav: 4.e3 g6"] {Whether or not the exchange Queens} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Qb3 O-O 7. Bd2 e6 8. Bd3 Nbd7 9. O-O Qe7 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 Re8 13. Rad1 Nf6 14. Bc2 Qc7 15. Qe3 b6 {Whereas an exchange of Bishops often marks the transition from opening to middlegame, the exchange of Queens often makes the game being to look like an ending. However, there are positions which even though Queenless can hardly be classed as endgmaes.} 16. Qe5 $1 Qb7 (16... Qxe5 17. dxe5 Nd7 18. Bc3 { White controls the open d-file and obtains a decisive positional advantage}) 17. Bg5 Nd7 18. Qd6 f6 19. Be3 Nf8 20. h4 $1 { Whiteworks up threats on the Kingside} (20. -- Bd7 21. -- Rad8 22. -- Bc8) 20... Bd7 21. h5 gxh5 (21... Rad8 22. hxg6 hxg6 23. Qg3 { White maintains pressure}) 22. Qh2 Re7 23. Qxh5 Be8 24. Qh3 Bg6 25. Bb3 { White stans to gain noting either by exchanging Bishops at g6 or by letting Black make the exchange. It is generally good policy to avoid exchanging pieces whenever one has more terrain than theopponent} 25... Bf7 26. Nd2 e5 27. Nf3 Ng6 (27... exd4 28. Nxd4) (27... e4 28. Nh4 { The Knight on f5 would be very uncomfortable}) 28. dxe5 Nxe5 29. Nxe5 fxe5 30. Bc2 $1 {The Bishop reverts to its former post because under the new circumstances a Bishop exchange at g6 would weaken Black still more} 30... e4 ( 30... Bg6 31. Bxg6 hxg6 32. Qg4 Kh7 (32... Kf7 33. f4 $1 e4 34. f5) 33. Rd6) 31. Bg5 Re6 { Somehow or other the Black Rooks must defend the e-pawn as wel as Rd7 invasions } 32. Rfe1 Rae8 33. c5 h6 (33... -- 34. Bb3 Rg6 35. Rd7) 34. Bc1 bxc5 35. Bb3 R6e7 36. Bxh6 Bxb3 37. axb3 Bd4 {The Black King is already bereft of pawns, and now the Bishop must also be situated to block a Rook invasion} 38. Qg4+ Kh7 39. Be3 $1 Qd7 40. Qh5+ {It goes without saying that exchange of Queens it not to be considered at this stage} 40... Kg8 41. b4 {bullseye} 41... Re5 42. Qg6+ Qg7 43. Qxg7+ Kxg7 {Now Queen exchange is shortest road to victory} 44. Rxd4 $1 cxd4 45. Bxd4 Kg6 46. Bxe5 Rxe5 47. Ra1 Rb5 (47... Re7 48. Ra6 Rc7 49. b5 $18 { pin}) 48. Ra4 {A fine move based on the face that Black's King cannot set foot on his fifth rank because of Ra5} 48... Kf6 49. Kf1 Ke6 50. Ke2 Rg5 51. g3 Rb5 52. b3 Kd6 53. Ke3 Rf5 54. Ra2 Rf3+ 55. Kxe4 Rxb3 56. Rd2+ Ke6 57. Rd4 1-0