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Sound Sac?

Sound Sac?

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z

127.0.0.1

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I just wanted to make life difficult for my opponent. so I sacced with 15. Bxh3 figuring that my well developed rook on e8 could easily be lifted into the attack.

was it sound? What's blacks optimal defense (clearly not what he played)

R

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I'm not so sure it works if he simply accepts it: 16.gxf3
What did you have in mind?

m

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Originally posted by Romanticus
I'm not so sure it works if he simply accepts it: 16.gxf3
What did you have in mind?
I think it is correct: 16. gxh3 Qxh3 17. Nf3 Ng5 and white cannot seem to stop Re3, Rg3, Nxe3+ etc.

R

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Originally posted by moteutsch
I think it is correct: 16. gxh3 Qxh3 17. Nf3 Ng5 and white cannot seem to stop Re3, Rg3, Nxe3+ etc.
Nf3 doesn't work,no: 17.Nf3,Nxf3+ 18.Bxf3,Re5! is even simpler.
Maybe a Re1,Bf1 maneuver works for White?Black's pieces seem to lack entry points.

Erekose

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Originally posted by moteutsch
I think it is correct: 16. gxh3 Qxh3 17. Nf3 Ng5 and white cannot seem to stop Re3, Rg3, Nxe3+ etc.
My first thought was 16 gxh3, Qxh3 17 Bf3 with the idea of Bg2 and Qf3 to follow. Then the rook lift isn't so easy for black becomes white's knight still controls e6.

R

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Originally posted by Erekose
My first thought was 16 gxh3, Qxh3 17 Bf3 with the idea of Bg2 and Qf3 to follow. Then the rook lift isn't so easy for black becomes white's knight still controls e6.
But then 17....,Re6 anyway 18.Nxe6?,Nxf3+! costs the queen.
18.Bg2,Rg6 is obviously no better

m

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Originally posted by Romanticus
Nf3 doesn't work,no: 17.Nf3,Nxf3+ 18.Bxf3,Re5! is even simpler.
Maybe a Re1,Bf1 maneuver works for White?Black's pieces seem to lack entry points.
You are incorrect. 17.Nf3 Nxf3+ 18.Bxf3 Re5 19. Bg4 Rg6 20. f3 Qg3+ is a draw.

My variation (above) wins.

z

127.0.0.1

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I'm glad to see I inspired some debate. The fact that I could lift the rook by both e6 and e5 was what convinced me I could make it work.

R

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Originally posted by moteutsch
You are incorrect. 17.Nf3 Nxf3+ 18.Bxf3 Re5 19. Bg4 Rg6 20. f3 Qg3+ is a draw.

My variation (above) wins.
17.Nf3 Nxf3+ 18.Bxf3 Re5 19.Bg4 Rg5 20.f3 Qg3+ 21.Kh1,Rg6 doesn't look like a draw to me.

S

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I am not sure it is quite sound.

But since normal defense via f3 doesn't work, we will have to defend from other means.

16 Re1, (Ff1 to follow) c5 17. Ff1 Qh4 18. Nf3... look like white escaped with a good game.

R

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Originally posted by Sophy
I am not sure it is quite sound.

But since normal defense via f3 doesn't work, we will have to defend from other means.

16 Re1, (Ff1 to follow) c5 17. Ff1 Qh4 18. Nf3... look like white escaped with a good game.
Yes,as I mentioned at the beginning I think that defends.
So I tried a different route for Black: 16...,c5 followed by 17....,Qxh3 difficult line and I caved,shame on me,and checked it with Fritz.So I must refrain from further participation in this thread.

Sound or not the sac is worth a try.Well played 🙂

S
Caninus Interruptus

2014.05.01

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Originally posted by Romanticus
Maybe a Re1,Bf1 maneuver works for White?
That's what Fritz 9 suggests - white has time for 17.Re1! followed by Bf1, pushing the enemy Q back and getting a defensive piece in front of the King. On 17...c5 18.Bf1 Qh6 19.Nf3 and black doesn't get the Rook lift in fast enough.

S

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We just have to be ready for the endgame.

One thing sure, we cannot take the pawn right away and we must be able to use the rook lift

After gxh3. We must remove the knight from its post in order to advance.

So yep, we should c5 before Qxh3 16... c5 17 Nf3. Qxh3. (now we can sue the rook lift. White should not take the knight as the rook take back . for exemple. 1 Nxe5, Rxe5 2 f4 Qg3+ 3 Kh1 Re6 4 Bh5 Rh6 5 Qf3 Qxf3 6 Rxf3 Rxh5, (white lost his extra pieces, he is down two pawn. ) So will continue white 18 Ng5... Qh4 19 f4. (white can follow with something like this, ( 1... f6 2. Kg2 fxg5 3. Rh1. trapping the queen. ) Qg3 + 19 Rh1. ( This phase is important. as white want to put his queen on e1 as soon as possible. 19... Re6 And we leave white with nothing better then a draw. If he doesn't take the rook, he will lose. So 20. Nxe6 Qh3+ Draw by Infinite check.
I think the best line for black after the sacrifice is 15... Bxh3 16. gxh3 c5 17. Nf3 Qxh5 18. Ng5 Qh4 19 f4 Qg3+ 20. Kh1 Re6 21. Nxe6 Qh38+ Draw.


I wonder if we can prepare this sac.

finally, I think it is sound, since you have a Draw in the bag.

R

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Originally posted by Sophy
We just have to be ready for the endgame.

One thing sure, we cannot take the pawn right away and we must be able to use the rook lift

After gxh3. We must remove the knight from its post in order to advance.

So yep, we should c5 before Qxh3 16... c5 17 Nf3. Qxh3. (now we can sue the rook lift. White should not take the knight as the rook take back . ...[text shortened]... if we can prepare this sac.

finally, I think it is sound, since you have a Draw in the bag.
It isn't sound if you were better and you forced a draw.

Doesn't mean it wasn't a good move though. 😉

S

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Yeap, al right.

But at least, I know something, I won't lose with this.

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