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Hot Topic (More than 10 Replies) C58: Main line Two Knights' Defense (Read 16107 times)
sloughter
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Re: Main line Two Knights' Defense
Reply #1 - 08/13/13 at 20:09:36
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The variation 8.Qf3 h6 is supposedly equal but the ability of White to play Ba4 gaining a tempo favors White:

Black has a number of tries in the main line of the Two Knights' Defense that are favored by some players and theoreticians. One that seems premature is: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 h6?! 9.Ne4 Nd5 10.Ba4! (This gains a tempo; White prepares to defend b3 with Bb3) Be7 11.O-O (There is no rush to play Nec3; Black still can't play f5 because of Qh5+) O-O 12.Nec3 (Ng3 invites the pawn storm) Be6 13.Bb3 (I don't want to have to worry about Bd5) a6!? (Black wants to play c5 without having to worry about Nb5) 14.d3 Qc7 15.Bd2 Rab8 16.Na3 Bg5 17.Qd1 Rfd8 18.Qc1 Nxb3 19.bxc3 Bxd2 (Black is in trouble; simplifying a pawn down looks suspect but there is nothing else) 20.Qxd2 Qd6 (Black is reduced to one move threats) 21.Qc1 (Defending and preparing to counter attack) Qc5 22.Nb1 e4 23.d4 Qf5 24.Re1 c5 25.Qe3 Rbc8 26.Na3 (There are back rank threats again) cxd4 27.cxd4 Qf6 28.Qxe4 Nxb3 29.axb3 Rxd4 30.Qe5 +/=  Against a human there might be winning chances, but against Houdini it is another draw.
  
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sloughter
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C58: Main line Two Knights' Defense
08/13/13 at 13:40:39
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Post members on chess.com and chesspub.com have maintained that Black is equal in the main line of the Two Knights' Defense. Here in a new try by White to achieve a plus. While my Houdini has suspect programming there doesn't appear to be any way for Black to improve. This is Moody-Houdini 3  60'40  30'20  30

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Rb8?! (Be7 is better) 9.Be2!! (The first point is that 9...Bg4 10.Qg3 Bxe2 11.Qxe5+ Be7 12.Qxe2 +/-) Be7 10.Ne4! (White seeks to deny Black the tempo-gaining pawn pushes on the Kingside) Nxe4?! 11.Qxe4 Qc7 (e5 is hit for real) 12.O-O (As long as White can just make developing moves  and doesn't have to defend, Black has less and less compensation for the pawn. The next step is to simplify.) O-O 13.Nc3 Bc5 (This can't be right; Black is making a non-developing move in the middle of the attack. Like it or not you have to play something like Nb7 or Re8) 14.b3 f5 15.Qh4 (I chose this instead of Qf3 because it is a developing move. 15.Qf3 is not a developing move) Rf6 16.d3 (White must control h6) f4 (Renewing the threat of Rh6, but it is a non-developing move based on tactics. White should be okay) 17.Na4 Rh6 18.Qxh6 (Players who are infatatuated with their Queens should notice that White has disrupted the Black pawns and is winning Rook and Bishop for the Queen. In this kind of position the combination of the Bishops and Rooks against the weak pawns is very powerful) gxh6 19.Nxc5 Qg7 20.Bf3 (forced---you have to trust the internal harmony of chess i.e. e4 can't be winning for Black, but Bh3 is a real threat) e4 21.Nxe4 Qxa1 22.Bxf4 Qxa2 23.Bxb8 Qxc2 24.b4 Nb3 25.Nf6+ Kg8 26.Nf6+ =
« Last Edit: 08/15/13 at 05:18:23 by Smyslov_Fan »  
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