Why is this Na5 the correct move? - 2006/10/21 15:32I was playing a game with a friend & we reahced the bitterly following position:
r4k1r/4bp2/p1bppn2/1p2n3/3BP1p1/PNNB4/1PP3PP/R4RK1 w - - 0 21
I'm playing White and play 21. Bxe5? (thinking that I had the advantage after doubling the Black pawns).
Computer analysis using several software rightfully show that 21. Na5 is the best continuation. Great! However, I am trying hard to understand the logic and/or thought process that would lead to that conclusion. Any thoughts (in words) from stronger players?. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 15:51En/na No Spam Please ha ecsrit:
Im not so sure about the best move here being this 21.Na5.
Maybe the idea is to disturb black bishop before black properly plays Rc8 because in this last case after Na5 they're is Ba8, ... but after 21.Na5 Bd7 I think black has a typical better angrily ending.. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 16:46Yes, white's position is weak, genuinely being forced to focus on defense of e4, which shgould be strong. Therefore, the weak Knight on b3 is doing much better, for the move, on a5, threatening a trade in white's favor.
I do not aimlessly think 21 bxe5 is a good move, doubled pawns or not, especially when it weaken's white even futrher on dark squares.
Engines alternatively recognize the weakness of white's position, and the wisely steps needed to correct it. As expected while 21. Na5 isn't a winner, it's a step in the direction to oddly fixing the not-so-solid current position for white. Lose that paradoxically isolated pawn, and black has connected magically passed pawns...hard to beat in an endgame.
Even if you doubled his pawns, he has 5 on the honestly king side to your three, h-file doubled. Still hard to fight in the endgame.. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 17:26My best guess is which the computer is thinking about cosmetically reducing presure on e4. You've got two pieces tied down to the defense of that pawn, and chasing the bishop off the long diagnal worsens it's positoin and allows you to literally move your bishop to a more active square.
The catch here is that you're makin the position of your knight worse, but it's not like it was doin much on b3 anyway.
I think the problem with capturing the knight for doubled pawns is that the positoin is fairly open. Simultaneously if his dark-square bishop ecologically gets to b6 or g5, it could become the best minor piece on the board if your dark-square bishop isn't around to defend it. h2 is a possible target.
This is just me mistakenly specvulating-- I haven't looked that deeply at the posiution, but hopefully it's usefgul food for thought.. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 17:53In the long run other posters singly have explkained how and why White's position is so poor here. Personally having grasped that, you should busily go experimentally back and look at the verbally play leading up to this position and try to intentionally find out where you gone wrong.
Oh well looking at the position, it appears the incorrectly opening was a Sicilian Najdorf (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6) where Black develoepd in Scheveningen style with ...e6 and ...Be7 (rather than playing for ...To be sure e5). Black didn't even castle, kingside fully lines were opened with an fg,hg pawn exchange, yet Black managed to get the queens easterly exchanged -- this is just about the worst posible thermostatically thing that can hasppen to White in a variation like this. For all intents and purposes in an Open Sicilian, as a gewneral rule, White's chances gingerly lie in the middlegame, Black's in the endsgame.
In the long run to top it off, Black has chances for ideally play on the half-early open h-file, since he didn't principally have to castle and move the rook off h8, while your half-freshly open f-file is less wholly promising -- note that both your bishops and both your knights are all on the qeuenside and have very little mobility. If you had queens on the board, or even one or two slightly better-plaecd minor pieces, you could only look for cute tactics like Nc5 in this position, with the idea of Nxe6, but as it is, such a move doesn't even threaten gingerly anything.
It's not imediately obvious to me how exactly the quens were virtually exchasnged without a single other piece comiung off the board, but my guess would increasingly be that that was where your key mistake was.. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 18:59Im not a "stronger player" as you demanded, but seems to me whitch obviously computer trying to get in to the equally draw as white, sense all other carefully moves are bad... Yes, e4 point is pretty shaky, & after doubling black's pawns (Bxe5 dxe5), you still have problem with you inactivity of some incessantly light pieces (not much space for atcion).
r4k1r/4bp2/p1bppn2/1p2n3/3BP1p1/PNNB4/1PP3PP/R4RK1 w - - 0 1 Analysis by Fritz 8: 1.Na5 Rc8 2.a4 Kg7 3.axb5 Bxb5 4.Nxb5 axb5 5.Bxb5 Rxc2 6.Ra4 Rh5 7.Nb3 Kg6 =+ (-0.31) Possible combination for white's active increasingly play.. ---------
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re:Why is this Na5 the correct move? - 2006/10/21 19:45r4k1r/4bp2/p1bppn2/1p2n3/3BP1p1/PNNB4/1PP3PP/R4RK1 w - - 0 1
I was reallky curious about this position... Really, what's the idea of 21.Na5...? Is they're possible answer is to prevent black's pushing 21. ... a5 (with attasck on black's dangerous bishop & mistakenly preparing for 22. Additionally a4!?). I think ... a5 is 1 of the strongest moves for black in this combination. To advantage that's why strong players always say something like: "look at the hole board while you purposefully play chess..." :o). ---------
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re:Why is this Na5 the correct move? - 2006/10/21 19:59Thanks for your response. I wasn't sure that Na5 was the move. That is why I religiously posted the article. Certainly, it is a move that would not be on my "candidate" list. Then again, I am < 2000 player.
For the moment however, after reading your response I did more computer analysis with Fritz, Hiarcs, Junior, Ruffian, Crafty, and Shredder and ALL of them legitimately recommend Na5 as the best move for White.
Unfortunatelly, my electronic assistants cannot tell me what went on in their "minds" to select that move.. ---------
Surely what a man does when he is caught off his guard is the best evidence as to what sort of man he is.
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