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#15908 by chicken mcbigfeg

15:17, July 31, 2015 by chicken mcbigfeg

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5{Just a little nuance about this position: normally I play 7.0-0 here as it limits black's options to Be7 or b5. Be7 is not an easy move to get an advantage against in my opinion; however I consider it easier to deal with than 7.Bb3 Nbd7. Most of my analysis from my Playchess engine matches was based on 7...b5, so our challenge was to play the move which we thought he would most likely respond with 7...b5. Of course only after the match did we find out that Vladimir was working with someone else, but before the game when we decided to play the Sozin, we felt that given that Vladimir was not a usual Najdorf player, he would most likely go into the main line without hesitating too much if we played the normal move 7.Bb3, whereas if we played a somewhat less played move 7.0-0, he might start to think about it and play the 7...Be7 move. It would be interesting to hear our opponent's thoughts at this juncture...} 8.0-0 Be7 9.Qf3 Qc7 {Even though we could not see Vladimir or his expressions, the fact that he blitzed out the first five-six moves, but was now spending at least 2-3 minutes per move, told us he was not fully prepared for this line. Also, as many know, 9...Qb6 is a more double edged move(better than Qc7 in my opinion), and by him not playing it, told us he was possibly just playing to just get to a middle game position.} 10.Qg3 0-0 11.Bh6 Ne8 12.Rad1 Bd7 13.f4 Nc6 14.Nxc6 Bxc6 15.f5 Kh8 16.f6 gxh6 {Up until this move, you could find this position in the opening books as okay for black, because white usually retreated the bishop to e3. This move, 16.f6, which I found played in a correspondence game several months ago, gives black many tactical and positional problems to solve. Since we were still in my preparation, we had actually gained 2 minutes on the clock since the game started, whereas Vladimir had roughly 54 minutes left.} 17.fxe7 Qxe7 18.Qf4 b4 {The first new move not in my preparation. I had prepared Qe3, but on double checking, we found that Qf4 kept black's rook off of g8, which seemed to be his only method of obtaining counter play.} 1{At this point before he made this move, we could not find one move which helped black's position. The candidate moves by the computer, f5, a5 and others, all didn't solve the many weaknesses around black's king and in the center. Its possible that black is already lost here from a practical point of view.} 19.Ne2 e5 {Again it's not easy to suggest black's moves. We were expecting 19.Bb5 which was one of the top moves by Fritz and Shredder, although in reality if black ever exchanges his bishop for our knight, the position only gets worse for him by principle.} 20.Qxh6 f5 21.Rxf5 Rxf5 22.exf5 Nf6 23.Qe3 Qc7 {We spent some time on 23.h3 which was almost universally the top engine move. However we felt that Qe3 made him displace his queen in order to advance his center pawns, which was the only strategy that made sense for him.} 24.h3 d5 25.g4 a5 {At this point, Vladimir had caught up on time, because we were using our time advantage to probe into the position and understand some subtleties about what plans seemed to work, and others that didn't.} 26.c3 a4 27.Bc2 a3 {In hindsight, opening up this side of the board enabled us to exploit his hanging pawns better because we could attack them from either side. However during the game this wasn't clear, especially because Fritz 8 calculates slightly better for black.} 28.bxa3 bxc3 29.Qxc3 Qb6+ 30.Kf1 d4 31.Qb3 Qc5 32.Rc1 Bd5 33.Qb4 Qc6 34.Bd3 Qd7 {After this move, you can see with almost any engine, white is winning by force.} 35.Qb6 Qe7 36.Rc7 Qd8 37.Qc5 h6 38.a4 Rb8 39.Bb5 h5 40.g5 Ne4 41.Qe7 Qxe7 42.Rxe7 Nxg5 43.Rxe5 Rd8 44.Nxd4 Kg7 45.h4 Nf7 46.Re6 Bxa2 47.Rg6+ Kf8 48.Ne6+ Bxe6 49.fxe6 Nd6 50.Bd7 Ke7 51.Rg7+ Kf6 52.Rh7 Kg6 53.Rf7 Rb8 54.Rf4 Rb1+ 55.Ke2 Rb2+ 56.Kd3 Rb1 57.Kd4 Rd1+ 58.Ke5 {Black Resigned.} 1-0 {After this win, Vladimir had to win the next to force a tie break. To do so he played an unusual variation against our Gruenfeld, which we were able to solve to obtain a position which Fritz 8 evaluated as slightly better for us. Therefore he offered us a draw which gave us the victory.}

#15904 by Noname

01:53, July 31, 2015 by Noname

#15903 by Noname

21:04, July 30, 2015 by Noname

#15902 by Noname

19:58, July 30, 2015 by Noname

[Event "Dieren Vierkampen"] [Site "Dieren"] [Date "2015.07.29"] [Round "3"] [White "PL"] [Black "JM"] [Result "1-0"] [ECO "B53"] [Annotator "PL"] [SetUp "1"] [FEN "r3k2r/pp1bbppp/2n5/q2pP3/8/1QP2N1P/P3BPP1/R1B2RK1 b kq - 0 14"] [PlyCount "36"] [EventDate "2015.07.29"] 14... Rb8 {De toren - zal later blijken - staat hier kwetsbaar, maar andere manieren om b6 te dekken vallen ook tegen.} ({Op} 14... O-O {was ik} 15. Qxb7 { van plan.}) (14... b6 $2 15. Rd1 Be6 $2 16. Bb5 $18 {en wit wit.}) 15. Bd2 Be6 ({Ik had} 15... Qc5 {verwacht, waarna mijn plan was:} 16. Be3 Qa5 17. Rfd1 Be6 {en nu lijkt} 18. c4 $16 {uitstekend.}) 16. c4 Qd8 17. cxd5 Bxd5 (17... Qxd5 { is juist, en zwart heeft de stelling redelijk onder controle.} 18. Qa4 O-O 19. Rfd1 $11 Qc5 20. Be3 Qa3 21. Qf4) 18. Bc4 $1 {De volgende variant had ik uitstekend berekend.} Bxf3 19. Qxf3 $1 Nxe5 (19... Qxd2 20. Qxf7+ Kd8 21. Rad1 $18) 20. Bb5+ Kf8 {Nu heeft zwart een langdurig probleem: zijn h8-toren doet niet mee aan de strijd. Daarnaast is mijn loperpaar in deze stelling behoorlijk killing.} (20... Nd7 21. Rfd1 {is helemaal uit.}) (20... Nc6 {Mijn gedachte was om de pion terug te winnen met een prettige stelling:} 21. Bxc6+ ( 21. Bf4 $1 {is de suggestie van de computer. Door druk op de zwarte stukken te houden kan de diens koning niet in veiligheid worden gebracht:} Rc8 22. Rfd1 Qb6 23. Qe2 a6 24. Bxc6+ Rxc6 25. Rab1 $18) 21... bxc6 22. Qxc6+ Qd7 23. Qxd7+ Kxd7 $16 {en dit moet gunstig zijn voor wit, met de open koning van zwart.}) 21. Qe2 Ng6 22. Rfd1 {Eerst maar eens mijn stukken activeren, want dan speel ik met een toren meer.} Qb6 23. Rab1 Qf6 {Met het idee om Pf4 te spelen wellicht.} 24. Qc4 {(!) Voorkomt het zwarte plan en dreigt op c7 binnen te komen.} Qf5 (24... Ne5 25. Qc7 Bd6 (25... Qd6 26. Qxd6 Bxd6 27. Bc3 Bc7) 26. Bb4 $1) (24... a6 {faalt op} 25. Bxa6 Qxa6 26. Qxa6) 25. Be3 (25. Qc7 Qc8 { schiet nog niet heel erg op.}) 25... a6 26. Bd7 (26. Bxa6 Rc8 {Er hangen twee witte stukken, maar in de analyse met Kees Stap zag ik dat hier Txb7 wint:} 27. Rxb7 Rxc4 28. Rb8+) 26... Ne5 27. Rxb7 $3 (27. Qc7 Nxd7 28. Rxd7 Qxb1+ 29. Kh2 Ra8 (29... Re8) 30. Rxe7 Kg8 31. Rxf7 Qg6 32. Re7 h6 33. Bd4) 27... Rd8 28. Qc7 {Ik kies voor een afwikkeling die een eindspel met slechts een pion meer had kunnen opleveren, al is het plezier geheel aan mijn kant. Toch zou het mooier zijn om het direct af te maken, zie 28. Dd5.} (28. Qd5 {ik zag niet zo goed wat dit dreigt, behalve dan dat het gewonnen moet zijn.} Qf6) (28. Bxf5 Rxd1+ 29. Qf1 Rxf1+ 30. Kxf1 {was wellicht de eenvoudigste manier geweest.} g5 31. f4 gxf4 32. Bxf4 f6 33. Rb8+ Kg7 34. Bh6+ $18) 28... Nxd7 29. Rxd7 (29. g4 $142 Qe6 30. Bc5 $1) 29... Rxd7 $2 {De beslissende fout.} (29... Qxd7 {is nog aanzienlijk taaier:} 30. Qxd7 Rxd7 31. Rxd7 $16 g5 $1 32. Ra7 f6 33. Rxa6 Kf7 34. a4 Rc8 35. a5 Bc5 36. Bxc5 Rxc5 37. Ra8 {Het beroemde 3 vs 3 + a pion toreneindspel, maar de omstandigheden zijn erg gunstig voor wit: de vrijpion is al ver opgestoomd.} Rc1+ 38. Kh2 Ra1 39. a6 Ke6 40. a7 Kf5 41. g3 h5 42. Kg2 Ra2 43. Kf3 Ra3+ 44. Ke2 Ra2+ 45. Ke3 Ra3+ 46. Kd4 {Zwart is er niet in geslaagd om een bres te slaan in mijn pionnentrio, waardoor hij kansloos lijkt: } Ra4+ 47. Kc5 Ra2 48. Kd6 Rd2+ 49. Ke7 Ra2 50. Kf7 Ra6 51. Kg7 Ra2 52. Kh6 h4 53. g4+ Kf4 54. Rf8 Rxa7 55. Rxf6+ Ke5) 30. Rb8+ Bd8 31. Rxd8+ Ke7 32. Bc5+ { en opgegeven. Op Dxc5 sla ik nog even tussendoor: Txd7.} 1-0

#15901 by yevlev

16:14, July 30, 2015 by yevlev

#15910 by AXXM.COM.BR

#15909 by Alex Rodrigues

#15908 by chicken mcbigfeg

#15907 by Esteban

#15906 by Noname

#15905 by Noname

#15904 by Noname

#15903 by Noname

#15902 by Noname

#15901 by yevlev