[Event "VII Continental Americano"] [Site "Mar del Plata, ARG"] [Date "2012.10.16"] [Round "6.3"] [White "Leitao, Rafael"] [Black "Tristan, Leonardo"] [Result "1-0"] [ECO "A87"] [WhiteElo "2617"] [BlackElo "2442"] [Annotator "Sergio Slipak"] [PlyCount "63"] [EventDate "2012.??.??"] {Round six saw an interesting victory by Brazilian GM Rafael Leitao, fourth seed, over the young Argentine IM Leonardo Tristan.} 1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. O-O Bg7 6. b3 {The double-fianchetto is a solution found in a wide variety of openings. Here Rafael uses it to fight Leonardo's Dutch Leningrad.} O-O 7. Bb2 Ne4 $6 {This plan doesn't seem very precise and the reason why will soon be revealed.} 8. Nbd2 Nxd2 9. Qxd2 {As an exercise, let's go back to the position before Black's seventh move and compare. Now go back to the current position and see. We can see that Black has managed to not play a single move, except to remove the Nf6 from the board, his only developed piece. In exchange, White exchanged off his Nb1, a piece that had yet to be developed, and has played Qd2, a useful move. In conclusion, Black's Ne4-d2 can be considered a waste of time.} Nc6 10. c4 e5 11. dxe5 {Leitao tends to prefer solid positions with small advantages and no rival compensation, which is why he opts for this move.} (11. d5 {was more incisive, followed by Ng5, exploiting the weak e6 square.}) 11... dxe5 12. Qd5+ Kh8 13. Qc5 $1 {Now the e5 pawn is under fire and if it advances, Black will have weakened his kingside.} e4 {The best move in any case, even if White is clearly better. It restricts the g2-bishop, which gives Black hope to equalize.} 14. Rad1 Bxb2 $2 {Ah the youth! White's advantage was hard serious enough to warrant this queen sacrifice, especially as the queenside pieces will take time joining the battle.} 15. Rxd8 Rxd8 16. Ng5 Bd4 17. Qa3 Kg7 18. Nh3 Be5 19. Nf4 Rd2 20. b4 $1 {Threatening b5 followed by Qe7.} a5 21. b5 Nb4 22. Qe3 $1 {Taking advantage of Black's lack of piece coordination, White is able to invade with his queen.} Rd4 $2 {This loses.} ({Also interesting was how White would win in case of} 22... Rxa2 {Now White would follow up with} 23. Qc5 $1 Bd6 24. Qd4+ Kg8 25. c5 $1 Bxf4 26. Qd8+ $1 Kg7 27. gxf4 {with an easy win.}) 23. a3 Rxc4 { El ultimo intento, dejar pasado el peon a. De todos modos perdian todas, por ejemplo: The last try, hoping to pass the a-pawn. In any case, all other moves lost as well.} ({For example,} 23... Na2 24. f3 Rxc4 25. Qb3) ({or} 23... Nc2 24. Qc3) 24. axb4 a4 25. Qa3 Rc2 26. b6 cxb6 27. Re1 g5 28. Nd5 Be6 29. b5 $1 {The queen penetration against the king is decisive.} Bb2 30. Qe7+ Bf7 31. Qxg5+ Kh8 32. Nxb6 1-0