Saturday, October 24, 2020

Alekhine Defense: White's repertoire

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 

White will proceed with Be3,Rc1 and b3 while Black is putting his bishop on g7

 7. Be3 Bg7 8. Rc1 O-O 9b3 


Here we are at a crossroads.
Black can play 9..Nc6 which White should reply with 10 d5!
or Black can play directly 9..e7-e5 leading to an ending after 10 de5



Here's the position after 9..e5, where White should take on e5

Start positionPrevious MoveNext MoveEnd positionPlay movesStop playing
10. dxe5 ( 10. Nf3!? Nc6 ( 10... Bg4 11. Be2 Nc6 see other line ) 11. Be2 Bg4 12. dxe5 dxe5 13. O-O f5 14. c5 Nd7 15. Ng5 Bxe2 16. Qxe2 f4 17. Ne6 ) ( 10. d5 f5 11. f3 N8d7 ) 10...  dxe5 ( 10... Bxe5 11. Nf3 Bg4 12. Be2 Bxf3 13. Bxf3 Nc6 14. Qd2 Re8 15. O-O Qd7 16. Rcd1 Rad8 17. Rfe1 Bg7 18. h4 +/- ) 11. Qxd8 Rxd8 12. c5 N6d7 [#] 13. Bc4 Nc6 ( 13... Nf8 14. Nb5 Nc6 15. Nd6 Ne6 16. Nf3 ) ( 13... h6 14. Nb5 ) 14. Nf3 [#] ( 14. Ne4 Na5 15. Bb5 a6 16. Be2 Nf6 17. Bg5 ) 14...  Na5 ( 14... h6 15. Ne4 [#] ( 15. Rd1 b6 16. Bd5 Bb7 17. Ne4 Nf6 18. Nxf6+ Bxf6 19. O-O += ) 15... Na5 ( 15... Nf8 16. Nd6 Rd7 17. h4!? ) ( 15... Re8 16. h4 ) 16. Be2 f5 ( 16... Nf8 ) ( 16... Nc6 ) 17. Nd6 Nc6 18. Bc4+ Kh7 19. h4 Bf8 20. h5 f4 21. Bd2 g5 ( 21... Nxc5 22. Nf7 Re8 23. b4 Ne4 24. b5 Nxd2 25. hxg6+ Kg7 26. Kxd2 Bb4+ 27. Kd1 ) 22. Nf7 Re8 23. b4 e4 24. N3xg5+ hxg5 25. Nxg5+ Kh8 26. h6 Be7 27. Nf7+ Kh7 28. Bd5 Nf6 29. Ng5+ Kg6 30. Bf7+ 1/2-1/2 (30) Ottesen,S (2364)-Schmidt,L (2388) ICCF email 2016 ) ( 14... Nd4? 15. Ng5 Rf8 16. Nce4 Nf5 17. O-O Nf6 18. Rfd1 Nxe4 19. Nxe4 Nxe3 20. fxe3 Bh6 21. Kf2 Rb8 22. b4 Kg7 23. Nd6 Bg5 24. Rd5 Bf6 25. b5 Be6 26. Rd3 Be7 27. Bxe6 fxe6+ 28. Ke2 Bxd6 29. cxd6 Rf7 30. Rc7 e4 31. Rd1 Rd8 32. d7 b6 33. Rxa7 Kf6 34. a4 Ke7 35. Rb7 1-0 (35) Ivanchuk,V (2734)-Palatnik,S (2478) Odessa/Istanbul 2006 ) 15. Be2 b6 ( 15... Nc6 16. Nb5 Nf8 17. Nd6 h6 ( 17... Ne6 18. Bc4 Ncd4 19. O-O! Nxf3+ 20. gxf3 Bf8 21. Rfd1 Bxd6 22. Rxd6 +/- ) 18. Bc4 ) 16. b4!? ( 16. cxb6 Nxb6 17. O-O += ) 16...  Nc6 17. b5 Nd4 18. c6 Nc5 19. O-O *


And here the position after 9..Nc6 10 d5!  (as 10 Be2 allows 10..d5 or 10..e5 with idea Bg4 and Nd4 if white pushes d5 )



Start positionPrevious MoveNext MoveEnd positionPlay movesStop playing
10. d5! ( 10. Be2?! e5 ( 10... d5 11. c5 Nd7 12. Nxd5 Ndb8 ) 11. Nf3 Bg4 ( 11... f5 ) 12. d5 ( 12. dxe5 dxe5 13. c5 Nd7 14. O-O h6 15. h3 Be6 16. Qd2 Kh7 17. Ne4 ) 12... Bxf3 13. Bxf3 Nd4 14. h4 ) 10...  Ne5 11. Be2 [#] 11...  e6 ( 11... h5 12. Nf3 Ng4 13. Bd4 Bh6 14. O-O Bxc1 15. Qxc1 f6 16. h3 Ne5 17. Nh4 g5 18. f4 gxh4 19. fxe5 dxe5 20. Bxe5 fxe5 21. Qg5+ +- ) ( 11... f5 12. f4 Ng4 13. Bxg4 fxg4 14. Nge2 e5 15. dxe6 Bxe6 16. O-O ) ( 11... Re8 12. f4 Ned7 13. Nf3 Nf6 14. O-O e6 15. dxe6 Bxe6 16. Bd4 ) 12. f4! Ned7 [#] ( 12... Bh6 13. Qd2 Ng4 14. Bxg4 Qh4+ 15. Qf2 Qxg4 16. h3 ) 13. dxe6! fxe6 ( 13... Qe7 14. Nf3! ( 14. Bd4!? Qxe6 ( 14... Bxd4 15. Qxd4 Nc5 16. f5 gxf5 ( 16... fxe6 17. fxg6 e5 18. gxh7+ Kh8 19. Qe3 ) 17. exf7+ ) 15. Nf3 same line as 14 Nf3 ) ( 14. Nh3 probably the best according to Stockfish12 14... Qxe6 ( 14... Nc5 15. f5 gxf5 16. exf7+ Rxf7 17. Bg5 ) 15. Bd4 Nf6 16. O-O ) 14... Nc5 ( 14... Qxe6 15. Bd4 ( 15. Bf2 Nc5 16. O-O Bd7 17. Nd4 ) 15... Nf6 16. O-O Re8 17. Ng5 ) 15. f5! gxf5 16. exf7+ Rxf7 17. Bg5 Bf6 ( 17... Qe6 18. Bf4 ) 18. Bxf6 Rxf6 19. Qd4 ) ( 13... Re8 14. exf7+ Kxf7 15. Bd4 ) 14. Qxd6 e5 ( 14... Nf6 15. Qxd8 Rxd8 16. Nf3 ) *

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