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Normal Topic Lesser known line in the Two Knights whith 4.d4 (Read 3557 times)
Markovich
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Re: Lesser known line in the Two Knights whith 4.d
Reply #6 - 02/28/07 at 18:26:33
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IMJohnCox wrote on 02/28/07 at 13:25:00:
This game is annotated in Harding's "64 Great Games" (if that's the right title).



Yeah.  I don't have that, but Zavanelli's annotations on the supplied link are pretty sparse.  1. e4 e5  2. Nf6 Nc6  3. Bc4 Nf6  4. d4 exd4  5. 0-0 Nxd4  6. Re1 d5  7. Bxd5 Qxd5  8. Nc3 Qd8  9. Rxe4+ Be7  10. Nxd4 f5  11. Bh6! fxe4  12. Bxg7 Rf8  13. Qh5+ Rf7  14. Rd1. 

Black has played optimally since 8...Qd8, but here I opine that 14...Bd7 as played was not the best move.  Rather I think 14...Qd6 was.  Zavanelli says this leads to a positional edge for White without offering any support.  I don't see how.  Thus 15. Ndb5 (15. Nd5 Nxd4  16. Rxd4 Bf5  17. Nf6+ Bxf6  18. Rxd6 Bxg7  19. Rd5 Bg6 and to me, Black's rook and two bishops look much better than White's queen) 15...Qf4 and now:

1.  16. Nd5 Qxf2+  17. Kh1 Bd7.  The Tactics Light is ON, as I sometimes say to my students.  18. Nf6+! (interferance; otherwise White is just dead) 18...Bxf6 19. Nxc7 and this knight checks perpetually because Black can't unguard his rook.

2.  16. Bh3 Qxf2+ 17. Kh1 Bd6  18. Nxe4 Bg4  19. Nbxd6+ cxd6  20. Nexd6+ Ke7

2a.  21. Bg5+ Kf8  22. Bh6+ Ke7  23. Bg5+ is a draw

2b.  21. Qg5+ Qf6  22. Rf1 Qxg5  23. Bxg5+ Kxd6  24. Rxf7 and White has a little something, but not enough for a lost piece.
  

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IMJohnCox
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Re: Lesser known line in the Two Knights whith 4.d
Reply #5 - 02/28/07 at 13:25:00
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This game is annotated in Harding's "64 Great Games" (if that's the right title).

  
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OstapBender
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Re: Lesser known line in the Two Knights whith 4.d
Reply #4 - 02/28/07 at 06:27:58
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Trying to dig up more information on 8...Qd8 9.Rxe4+, I ran across the following correspondence game featuring 11.Bh6:
Zavanelli-Canibal, Reg Gillman memorial 2000
  

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Markovich
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Re: Lesser known line in the Two Knights whith 4.d
Reply #3 - 02/27/07 at 20:22:23
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Well, my fluttering heart must await some further CC triumph of this poster, revealing why 11. Bh6 isn't good.  Harding expresses the view that Black is probably O.K. after 11. Bh6 but that his task there is more difficult than with other queen retreats.  I have no idea whether he's right about that, but he is a most respected source.

Also, in my view, it's a little misleading to call 9. Rxe4+ the "other main line."  It is the main line.  In my data base, it's preferred over 9. Bg5, 40 games to 2.
  

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Re: Lesser known line in the Two Knights whith 4.d
Reply #2 - 02/27/07 at 18:04:03
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Congratulations – what a great game!  After your strong novelty 12...g5! I think Black has a substantial advantage and may even be already winning.  So I think 12.Qd3 looks like a mistake and White probably needs to try 12.c3.  Although, as you point out, even after 12.c3 Black seems to be a least slightly better.

I used to play the black side of the Two Knights and I always chose either 8...Qa5 or 8...Qh5 in this line (more often 8...Qa5), as I had been under the impression that 8...Qd8 is strongly answered by 9.Rxe4+ (iirc, this impression is based mainly on what I read in Estrin's Two Knights Defense book).  Surely 9.Rxe4+ must be better than 9.Bg5, but maybe it's not as strong as I thought.

Thanks for sharing this game with us.
  

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Re: Lesser known line in the Two Knights whith 4.d
Reply #1 - 02/25/07 at 19:34:22
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Very interesting
   Thanks
  

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micawber
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Lesser known line in the Two Knights whith 4.d4
02/25/07 at 15:04:46
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Malushko-Micawber, corr. , 2006

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. O-O Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 8……Qd8!? (diagram1)



r1bqkb1r/ppp2ppp/2n5/8/3pn3/2N2N2/PPP2PPP/R1BQR1K1 w kq -


8…..Qa5 or 8…Qh5 are more usual, but 8...Qd8 has some surprise value

9. Bg5

_________________________________________________________
9. Rxe4+ Be7 10. Nxd4 f5 is the other main line (see diagram below)

(diagram 2)


{A}11. Rf4, O-O 12. Nxc6 Qxd1+ 13. Nxd1 bxc6 Two world champions have played this postion as black:
Rhode-Lasker, Breslau 1909, 0-1; Ragozin-Botwinnik, Moskou 1930,0-1.   
{B}11. Bh6!? fxe4 12. Bxg7 Kf7 13. Bxh8 Qxh8 14. Qh5+ Kf8 15. Nxc6 bxc6 0-1, Reich Thomas (GER) 2356 - Herbrechtsmeier Christof (GER) 2345, Germany 2001)
The 11.Bh6!? variation above has been discussed on the forum. I prepared some improvements to meet this option.
But I’ll wait to reveal them until I’ve had a chance to use them in my corr. games. Wink

9. Nxe4 Be7 10. Bg5,f6 transposes to the game
__
9............  f6
10. Nxe4 Be7


(diagram 3)



11. Bf4.......
                 11. Nxf6?+ gxf6 12. Bxf6 O-O! 13. Bxe7 Nxe7 has made quite a number of victims
                  -  14. Ng5 Bf5 0-1, Keberl - Foltys Jan (CZE), Schiavno Zdroj (Poland) 1950;
                  -   14. c3 Ng6 0-1, Stein(GER) 2340 - Smejkal Jan (CZE) 2525, Germany
1987);
                  11. Bxf6? gxf6 12. Nxf6+ Kf7-+ whithout much compensation
                  11. Bh4!? O-O-+
                         12. c3 dxc3 (g5) 1/2-1/2, Cohn (GER) - Reggio (ITA), Barmen (Germany) 1905
                         12.Qd3 g5 13. Qc4+ (13. Bg3) 13... Kh8 =+ 1-0, Estrada (URU) - Emma (ARG) 1958 
11... ……O-O
12. Qd3

                        12. c3 g5 (12... Be6);
                        12. h3 Be6 13. Qe2 Qd5 (better 13... Re8!) 14. Bxc7 Rac8 =  1-0, Bletz  2284 -   
                       Herbrechtsmeier 2292,1991 
12... g5!N          NEW!
                       12... Kh8 13. Rad1 Bg4 (g5!?) =+ 0-1,
                       Obukhov  (RUS) 2475 - Glianietz(RUS) 2385, Cheliabinsk (Russia) 1990
13. Bc1             Compared to Obukhov-Glanietz white has to lock up his rook on a1
                        White has nothing better than the text move:
                        13. Bg3 g4-+;
                        13. Bd2 g4-+;
                        13. Nfxg5 fxg5 14. Bxg5 Bxg5 15. Qg3 Bf5 16. Nxg5 Kh8-+ 
                                              14. Nxg5 Bxg5 15. Qg3 Rxf4-+!
13... g4
14. Nfd2 f5
15. Ng3 f4
16. Qb3+?!

                          16. Ne2 f3 17. gxf3 Bh4 (or 17... Rf7) with a black attack;
                         16. Nge4!? Qd5 (or  16... Ne5 17. Qb3+ Kh8-+) 
16.........Kh8
17. Nge4
17. ...........  a5!!

                          Black decides to extract some concessions from white before starting
                          an attack with 18…..f3

18. f3

                          18.a4, Ra6! -+(as 19.f3 fails on 19…Rb6 20.Qa2/c4, Nb4  threatening 20….Be6)


18…….a4!
19. Qc4


Black seems to have violated some openings principles: he hasnt developed a piece since move 11!  But look what white has achieved in the meantime: the only positive feature of his position is that he has managed to bring a knight to e4. White’s kingside is rather undefended, while black is set for a pawn storm supported by heavy pieces on the f- and g-line.

(diagram 4)



19. ..........Bh4!


20. Rf1

                     20. Rd1 Qe7-+ 
20... …..Ne5
21. Qc5 Rf5
22. Qa3
22..........Be6!
Prevents any freeing moves like b4 and
                     puts the queen out of play (… Be7 is threatened as well)
23. fxg4
                     Alternatives:
                     23. Nc5 Bd5;
                     23. b4 axb3--+ 
23.....Nxg4
                     Now Ng4-e3 looms up;black has the open g-file as well
24. Nf3
                     24. Nc5 Ne3 25. Nxe6 Qg8--+ 
24.......... Bc4
25. Rd1        a last attempt by white to free himself
25…….. c5!
                    Even better than 25…Be7 26.b4,axb3 27.Qb2
                    when white might prolong his resistance by attacking the d-pawn.

(diagram5)


White resigns, he has hardly a usefull move left :
26.c3, Bd5! 27,.Nxc5,Bxf3 28.gxf, Qg8!! --+
26.Nxh4,Qxh4 27.Qh3,Qxh3 28.gxh,Ne3 --+
26.Bd2,Be2 --+



[center] [img]http://www.france-echecs.com/diagramme/imgboard.php?fen=[/img [/center
  
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