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Normal Topic Spanish, Closed, Zaitsev: is 10...Nd7 good? (Read 637 times)
Seeley
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Re: Spanish, Closed, Zaitsev: is 10...Nd7 good?
Reply #5 - 05/10/20 at 10:15:44
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Marc Benford wrote on 05/09/20 at 22:41:29:
Is 10...Nd7 objectively good for Black? Stockfish 11 says: 11.Nbd2 is +0.58, 11.Bc2 is +0.58, 11.a4 is +0.55, 11.a3 is +0.47, which is a bit worse than usual for Black

I'm not sure it's particularly useful to turn on your engine on move 10 in a position like this and conclude too much from the numbers it gives you. 10...Nd7 introduces a coherent plan for Black of swapping on d4 and redeploying the pieces to attack the centre, usually with ...Re8, ...Bf6 ...Na5, and sometimes with ...c5 as well. Giving up the centre like this entails some risk, but you've now got an unbalanced position with everything still on the board apart from one pair of pawns. If you're unwilling to take the draw by repetition you've already said you want to avoid, then that seems like a reasonable compromise. Svidler and Bu, to name two 2700+ players, have thought the idea good enough to play multiple times against 2600+ GMs. As Kuzmin puts it in his book The Zaitsev System, this approach gives Black the chance to conduct 'a full-scale battle in an original key.'
  
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kylemeister
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Re: Spanish, Closed, Zaitsev: is 10...Nd7 good?
Reply #4 - 05/10/20 at 06:40:06
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What a misstep, that Morphy Defense.
  
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gewgaw
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Re: Spanish, Closed, Zaitsev: is 10...Nd7 good?
Reply #3 - 05/10/20 at 06:01:12
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3. ...a6?!, better is 3. ...Nf6.
  

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kylemeister
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Re: Spanish, Closed, Zaitsev: is 10...Nd7 good?
Reply #2 - 05/10/20 at 03:19:36
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I would suppose that the alternatives to 10...Re8, including 10...h6 (ye olde Smyslov Variation) and 10...Qd7, are (still) generally thought to belong in the "+= with best play" basket.
  
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an ordinary chessplayer
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Re: Spanish, Closed, Zaitsev: is 10...Nd7 good?
Reply #1 - 05/10/20 at 02:31:15
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If needing to win, black needs to play something different on move 9 or earlier. I thought everybody knew that. There's always the Sicilian.
  
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Marc Benford
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Spanish, Closed, Zaitsev: is 10...Nd7 good?
05/09/20 at 22:41:29
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Spanish, Closed, Zaitsev: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Bb7 10.d4

The big problem is 10...Re8 11. Ng5 Rf8 12.Nf3 and either Black accepts the draw by threefold repetition or Black needs to play something else... but what? The only other 10th move in my GM database is 10...Nd7. Is 10...Nd7 objectively good for Black? Stockfish 11 says: 11.Nbd2 is +0.58, 11.Bc2 is +0.58, 11.a4 is +0.55, 11.a3 is +0.47, which is a bit worse than usual for Black  Cry
  
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