2013-01-03-aj problemoj

Hodiaŭaj problemoj (de la 80a al la 82a): Lasker - Euwe [0044.66],  Adamson - Aripov [4871.66] kaj Pavasovic - Srebrnic [4574.65].

000080. Emanuel Lasker - Max Euwe. Notinghamo. 1936.08.25.

9 + 9
FEN: 8/pp4pp/2p1kp2/b7/2nP4/3K3P/PP3PP1/2B1N3 w - - 5 23
GRB: 0044.66 (KBNKBN_0101)
ECO: D12

PGN: 1. d4 {Notoj de Alekhine} d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Bd3 {This seems to promise even less winning chances than the more usual 5 cxd5 after which Black gets a satisfactory position by the manouver ... Qc8 kaj finfine ...Nfd7} e6 6. cxd5 {Se unue 6 Bxf5 exf5 kaj poste 7 cxd5, Black would reply Nxd5.} Bxd3 7. Qxd3 exd5 {Nun la pozicio reached is familiar with colors reversed, in a variation of the Caro Kann Defence (1 e4 c6 2 d4 d5 3 exd5 cxd5 4 c3) in which Black - as in this case White - has to choose between a "minority attack" on the Q side or a break in the center by e4. Dr. Lasker selects the second method, which gives him, however, only prospects a draw.} 8. Nc3 Bd6 9. O-O O-O 10. Re1 Nbd7 {White's next move could not be prevented.} 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 {This looks like a drawing proposition, as after Black's next move further liquidation will be practically forced. But White had no objective reason to avoid a draw, as the alternative 13 Rxe4 Qf6 would now offer him attacking chances.} Re8 14. Qxe8+ Qxe8 15. Rxe8+ Rxe8 16. Kf1 {At this moment the game might safely be declared a draw; certainly with more reason that many other games in this tournament. That the draw was not declared here was only, I presume, because neither player offered one, for different reasons. Dr. Lasker, because (although he doubtless was perfectly aware that his isolated pawn is by no means a serious weakness) he was, theoretically at least, at a slight disadvantage; Dr. Euwe because as the new champion he felt obliged to exploit even the shade of a winning chance. The unfortunate result was the ending catastrophe, which changed the normal course of the tournament.} Nb6 17. Bd2 f6 18. Re1 Rxe1+ 19. Nxe1 Kf7 20. Ke2 Ke6 21. h3 Nc4 22. Bc1 Bc7 23. Kd3 Ba5 {?? This move is hard indeed to understand, as even the answers 24 Nc2 or 24 Kxc4 Be1 25 Be3 would yield Black no advantage.} 24. b4 {! The rest of the game reqires no comment.} Bxb4 25. Nc2 Bd2 26. Bxd2 Nb2+ 27. Ke3 Kd5 28. Bc1 Nc4+ 29. Kd3 Nb6 30. Ne3+ Ke6 31. Nc4 Nc8 32. Na5 Nd6 33. Bf4 1-0

000081. Robby Adamson (2308) - Iskandar Aripov (2165). Nordamerika Turniro (4.24). Lasvegaso, 2012.12.27.

12 + 12
FEN: 3rr2k/1p2Npbp/1Qbp1pp1/5P2/2P1P3/1P3B2/1q4PP/RR5K b - - 9 27
GRB: 4871.66 (KQRRBNKQRRBB_1011)
ECO: B36
PGN: 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Be3 Bg7 9. f3 O-O 10. Qd2 a5 11. Rd1 Be6 12. b3 Nd7 13. Be2 Ne5 14. O-O a4 15. f4 Ng4 16. Bd4 Nf6 17. Bf3 axb3 18. axb3 Qa5 19. Kh1 Rfd8 20. f5 Bd7 21. Qe3 Re8 22. Rde1 Qa3 23. Bxf6 exf6 24. Nd5 Rad8 25. Ra1 Qb2 26. Qb6 Bc6 27. Ne7+ Kh8 28. Rfb1 Ra8 0-1

000082. Dusko Pavasovic - Vojko Srebrnic. Slovena ĉampioneco (5), Mariboro. 1998.

12 + 11
FEN: 2r1q3/7k/2bP1npb/1pp2p1p/4P3/2P2Q1P/1P2B1P1/3RRNK1 w - - 3 34
GRB: 4574.65 (KQRRBNKQRBBN_1011)
ECO: B06
PGN: 1.e4 d6 2.d4 g6 3.Nc3 c6 4.Nf3 Bg7 5.Be2 Nf6 6.O-O O-O 7.Re1 Qc7 8.Bf4 Nh5 9.Be3 e5 10.a4 Nd7 11.Qd2 Nhf6 12.h3 Re8 13.Bf1 Nf8 14.Rad1 Ne6 15.d5 cxd5 16.exd5 Nc5 17.Nb5 Qd8 18.Bxc5 dxc5 19.d6 e4 20.Nc7 Bd7 21.Nxe8 Qxe8 22.Bc4 h6 23.a5 Rd8 24.Qc3 Nh5 25.Qd2 Kh7 26.Nh2 f5 27.c3 b5 28.axb6 axb6 29.Nf1 b5 30.Be2 Nf6 31.Qe3 Rc8 32.f3 h5 33.fxe4 Bh6 34.Qf3 Bc6 35.Bxb5 Bxb5 36.exf5 Qc6 37.fxg6+ Kxg6 38.Qg3+ Kh7 39.Re7+ Kh8 40.Qg6 1-0