[Event "Petropolis Interzonal"] [Site "Petropolis"] [Date "1973.08.07"] [Round "11"] [White "Bronstein, David I"] [Black "Ljubojevic, Ljubomir"] [Result "1-0"] [ECO "B03"] [WhiteElo "2585"] [BlackElo "2570"] [Annotator "Llewellyn,Alan"] [PlyCount "81"] [EventDate "1973.07.23"] [EventType "tourn"] [EventRounds "17"] [EventCountry "BRA"] [EventCategory "12"] [Source "ChessBase"] [SourceDate "1999.07.01"] {The Yugoslavs were overwhelmed by the beating of their hero Ljubomir Ljubojevic, a strong non-Russian player by David Bronstein who crushes the man with a double Rook sacrifice. David was in the twilight of his career but still managed this brilliancy, 22 years after challenging Mikhail Botvinnik for the World Title at age of 27. The Yugoslavs voted the game the best game of their famous Informator series. It is actually a rare opening which I myself play as Black, so it has additional interest for myself.} 1. e4 Nf6 { The opening is not only an Alekhine Defence but it is probably the most provocative line of that defence- The Four Pawn Attack.} 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 {White has a pawn centre made up of four pawns, Black hopes to show this is premature and can often target the pawns with moves such as c5 and g6 followed by Bg7.} dxe5 6. fxe5 c5 $6 {I prefer building up to this move for example my favourite line goes:-} (6... g6 7. Nc3 Bg7 8. Nf3 Bg4 9. Be2 c5 $13) 7. d5 e6 $2 (7... g6 $11) 8. Nc3 exd5 9. cxd5 c4 {the point of this move is to prevent the troublesome Bb5+.} (9... Qh4+ 10. g3 Qd4 11. Nf3 Qxd1+ 12. Kxd1 Bg4 13. Be2 $16 {and White has an edge because of his dominant centre and well placed pieces.}) 10. Nf3 Bg4 $2 (10... Bb4 $14) 11. Qd4 $1 Bxf3 $2 12. gxf3 Bb4 $3 {now Qxd5 is threatened because of the pin on the c3 Knight from b4 Bishop.} 13. Bxc4 O-O 14. Rg1 (14. Bh6 $2 gxh6 15. Rg1+ Kh8 16. e6+ f6 $1 $15) 14... g6 15. Bg5 $6 (15. Be3 $16) 15... Qc7 $5 16. Bb3 $2 (16. b3 $4 Bc5 17. Qg4 Bxg1 18. Qxg1 $19) (16. Rg4 $13) 16... Bc5 17. Qf4 Bxg1 18. d6 Qc8 $2 $17 (18... Qc5 $1 $19) 19. Ke2 Bc5 $6 (19... Qc5 $3 $17 {Ljubomir was probably freightned of Ne4 then going into f6.} 20. Ne4 Qb5+ 21. Kd2 Nc4+ 22. Kc2 Be3 23. Qh4 Na3+ 24. bxa3 Qe2+ 25. Kb1 Qd3+ 26. Bc2 (26. Kb2 Bd4+ 27. Kc1) 26... Qf1+ 27. Kb2 Bd4+ 28. Nc3 Bxc3+ 29. Kxc3 Qxa1+ $19) 20. Ne4 N8d7 21. Rc1 $1 Qc6 22. Rxc5 $3 Nxc5 23. Nf6+ $1 Kh8 24. Qh4 $3 {It turns out that their appears no escape from the mating net-Who needs Rooks?} Qb5+ 25. Ke3 h5 26. Nxh5 $5 Qxb3+ {no choice to defend the key f6 square.} 27. axb3 Nd5+ 28. Kd4 Ne6+ $1 29. Kxd5 Nxg5 $1 {defending the key h7 square now.} 30. Nf6+ {White is finally able to get this move he threatened for so long. The rest is childs play but you see the Yugoslav was trying to take advantage of the fact that David only had seconds left on his clock, once the time control is met Ljubomir gives up the ghost.} Kg7 31. Qxg5 Rfd8 32. e6 fxe6+ 33. Kxe6 Rf8 34. d7 a5 35. Ng4 Ra6+ 36. Ke5 Rf5+ 37. Qxf5 gxf5 38. d8=Q fxg4 39. Qd7+ Kh6 40. Qxb7 Rg6 41. f4 1-0