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Blitz tactics #1: Breaking up the center Blitz tactics #1: Breaking up the center
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03-09-2009 , 10:56 PM
#1
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Black to move.

This came from a nimzo indian where black decided to get a bit frisky in the opening leading to a really wild position. Black can clarify things a bit with a combination here. This is more of a positional combination than a decisive combination.

Hint:

Spoiler:
There are two tactical ideas here. One is better than the other and a little bit harder to spot.
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03-09-2009 , 11:32 PM
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Spoiler:

I would first play 1...gf to make his kingside pawns not so good. He is forced to reply 2. fg because otherwise I will fork his pieces next turn. Then I dunno what I would do next, maybe ...Kh8 to prepare ...Rg8, or ...Nh5 to threaten ...f4 which blocks his entire center and bishop

Oh maybe also 2... dc 3. Bxc4 fe 4. fe but that doesn't look so good

I dunno, it's complicated
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03-10-2009 , 12:11 AM
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Garcia, both of your moves are pretty bad..

Spoiler:
after 1.. gf he is not forced to take back, he can play 2. ef.. Also 1.. dc doesn't make sense, you are just improving his pieces and helping his pawn structure. The solution should be 1.. Nd4! After 2. cd black plays de, attacking the bishop and pawn on d4 (together with a rook on a1).
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03-10-2009 , 12:15 AM
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Spoiler:

That makes sense to me but after ...Nd4 white can play cxd4 and he has won a piece though
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03-10-2009 , 12:19 AM
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Did you read everything I wrote?
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03-10-2009 , 12:25 AM
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Spoiler:
Is this the position that results? I might be reading the notation wrong:


I don't see how black regains the piece
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03-10-2009 , 12:29 AM
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Spoiler:
I thought I wrote it pretty clear - white has to either move a bishop or take on e4, after which Qxd4+ wins a rook on a1. Of course you can defend a pawn on d4, but then black takes the bishop on d3 and remains a pawn up.
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03-10-2009 , 12:33 AM
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Oh!
I get it now. That looks pretty nice.
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03-10-2009 , 12:36 AM
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Hopefully it's correct, I wasn't calculating too deeply.
Spoiler:
In the long line where white let's black take the rook on a1, black queen is pretty cramped after Bb2 and Qa2, but I think there is no way to trap it.
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03-10-2009 , 01:12 AM
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Quote:
Originally Posted by YouKnowWho
Garcia, both of your moves are pretty bad..

Spoiler:
after 1.. gf he is not forced to take back, he can play 2. ef.. Also 1.. dc doesn't make sense, you are just improving his pieces and helping his pawn structure. The solution should be 1.. Nd4! After 2. cd black plays de, attacking the bishop and pawn on d4 (together with a rook on a1).
Spoiler:
This is the right idea, but playing 1. .. Nd4 immediately is a bit too fast as white can get a whole lot of compensation for the pawn after, for example, 1. .. Nxd4 2. cxd dxc 3. Qb2 exd 4. Nxd3 when black's dark squares are very loose. Black's dark squares are actually always going to be a problem, but there's a way to accomplish the same thing, but restrict white's opportunities quite a bit more - while simultaneously also increasing black's.
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03-10-2009 , 01:30 AM
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Well then let's do the same thing in a different move order, starting with

Spoiler:
1..de
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03-10-2009 , 01:35 AM
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Quote:
Originally Posted by YouKnowWho
Well then let's do the same thing in a different move order, starting with

Spoiler:
1..de
Yip!


...but

Spoiler:

This goes back to the hint from the original post. There's an even stronger way to exploit the same tactic (which I missed in the game - I played Nxd?!)!
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03-10-2009 , 01:44 AM
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Spoiler:
well I guess 1... de 2. fe Nb4 might be a little better, though I think white should have enough counterplay even there
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03-10-2009 , 01:53 AM
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Quote:
Originally Posted by YouKnowWho
Spoiler:
well I guess 1... de 2. fe Nb4 might be a little better, though I think white should have enough counterplay even there
He definitely does, but nearly as much. The actual combo is a bit tricky since in the case of:

Spoiler:

dxe fxe Nb4 cxb4 Qxd4+ Rf2! Qxa1? is actually a blunder that's refuted by Qd2! (threatening Qg5+ and Bb2 which black cannot really meet), so black has to play g3/etc going for the f2 rook - but yeah, I was just looking for de and Nb4.
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03-10-2009 , 01:56 AM
#15
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So this position illustrates that a common tactical motif is "undefended rook in the corner"

This is a common motif
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03-10-2009 , 02:05 AM
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Hm, that's exactly why I really didn't like this line. No offense, but I think white is better there, even when
Spoiler:
he is exchange down. In such an open position his 2 bishops will be just killing, plus he has a pawn for that exchange too..
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03-10-2009 , 02:06 AM
#17
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anything you guys want
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Spoiler:
I don't know what I would do but i think cXd4 would def break up the center
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03-10-2009 , 02:36 AM
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Quote:
Originally Posted by YouKnowWho
Hm, that's exactly why I really didn't like this line. No offense, but I think white is better there, even when
Spoiler:
he is exchange down. In such an open position his 2 bishops will be just killing, plus he has a pawn for that exchange too..
In which line exactly? In the variation I gave with g3/etc black is quite good. I don't see any line where white can afford to drop the exchange.

I think the tactical route is the only idea for black in this position. Everything else leaves him in alot of trouble. I played the opening quite poorly.
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03-10-2009 , 02:37 AM
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Quote:
Originally Posted by garcia1000
So this position illustrates that a common tactical motif is "undefended rook in the corner"

This is a common motif
Yeah, extremely common. I actually posted another position with the exact same motif unintentionally! It's just something that constantly comes up.
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03-10-2009 , 02:44 AM
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Spoiler:
1.. de 2. fe Nb4 3. cb Qd4+ 4. Rf2 g3 5. hg Ng4 and then something simple like 6. ef. What do you do? 6.. Qa1 is like the only move, after which 7. Re2 and in my opinion white is at least not worse. Your king is totally vulnerable and you will have to be very careful to neutralize all the threats.
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03-10-2009 , 03:20 AM
#21
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Quote:
Originally Posted by YouKnowWho
Spoiler:
1.. de 2. fe Nb4 3. cb Qd4+ 4. Rf2 g3 5. hg Ng4 and then something simple like 6. ef. What do you do? 6.. Qa1 is like the only move, after which 7. Re2 and in my opinion white is at least not worse. Your king is totally vulnerable and you will have to be very careful to neutralize all the threats.
It's definitely a wild and unbalanced game with chances for both sides, which is the point of the tactic. "Normal" moves in the original position leave black very bad.
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