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****Chess Tactics Problems Here**** ****Chess Tactics Problems Here****

03-08-2009 , 07:35 PM
The OOT thread had a number cool sub-threads running through it. I really enjoyed all the tactics problems people posted that were from their own games, from master games or from problem books. I'll put any that I find in this thread and I'd encourage anyone else to post tactics problems here too. They don't have to be super hard, just anything you find interesting or instructive.

This first one is from a game I played recently. White is to move. Black just played Be7xh4 because OMG free pawn! Is this a good move for black? What should white play? I'll warn you that finding all the lines is difficult, but the ideas and main line(s) are relatively straightforward.

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03-08-2009 , 07:37 PM
Do we just write the answers here, or send you a PM in order not to reveal that to others (assuming that answers are correct)?
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03-08-2009 , 07:38 PM
Quote:
Originally Posted by YouKnowWho
Do we just write the answers here, or send you a PM in order not to reveal that to others (assuming that answers are correct)?
Oops, sorry. Just put the answer in thread in [/spoil][spoil]

Edit - obv switch those so you get the spoiler box.

Last edited by swingdoc; 03-08-2009 at 07:39 PM. Reason: backwards
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03-08-2009 , 07:49 PM
Spoiler:
Actually there are a couple of interesting alternatives here. Obviously, white can simply take a pawn back with Nc7, and have a quite pleasant position. However, I have a feeling that there should be something more in this. 1. Rh4 seems interesting too - if black continues with 1.. Qh4, then 2. Nc7 Ke7 (any other moves with the king allows white to simply take on a8 and be an exchange up) 3. Nf5!+ with a completely winning position. However, after the 1. Rh4 black has this subtle and strong 1.. c6. Of course white can simply move his rook back and then take back on d5 with a pleasant position again. However, there might be something else that I don't see just yet
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03-08-2009 , 08:09 PM
I don't think we should cram them all in a single thread. It'd get pretty messy, especially since some of the positions are fun to just talk about even. On the other hand, if everybody made a new thread for every single tactics problem that'd be a mess to. So, I dunno?

As for yours

Spoiler:

I think after the simple Nxc7 black can resign with a clear conscious. His king will find no safety anywhere, the d pawn's going to fall, white has outposts out the yazza, etc. Like a funny variation would be Nxc7 Qxc7 Rxh4 o-o? Bxh6
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03-08-2009 , 08:27 PM
Quote:
Originally Posted by Dire
I don't think we should cram them all in a single thread. It'd get pretty messy, especially since some of the positions are fun to just talk about even. On the other hand, if everybody made a new thread for every single tactics problem that'd be a mess to. So, I dunno?
That's what I was kind of wondering about. I wasn't sure what was best so figured I'd just throw a thread out there and let it die if that's what the masses want. I think it'd be a mistake to have a bunch of threads that get 0-2 responses. Possibilities:
  • Free for all with everyone creating a new thread for each tactic
  • Threads unique for each poster
  • Monthly tactics threads
  • One giant tactic thread
  • Tactic thread that gets locked and a new one made after x number of posts

Thoughts? Ideas?
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03-08-2009 , 09:01 PM
Swingdoc:

Spoiler:
The main theme is clearly that the Q is the only defender of h4 and b7. The most straightforward attempt to exploit this seems to just be 1. Rxh4. If 1. ... Qxh4 then 2. Nxb7+ Kg8 (or Kd8) 3. Nxa8 and white has won a piece and a pawn, plus removed black's ability to castle. If 2. ... Ke7?? (trying to protect a8) 3. Nf5+ forks the king and queen, and simultaneously threatens 4. Qxd6++. In other words, as far as I can tell the bishop on h4 seems to be hanging, so just snap it off with the rook. Is this it, or am I missing something key?


And I think that one big tactics thread should work all right. The key will be to have a general consensus not to post new problems if there are still active discussions on previous ones. As long as we keep the ratio at about 3-5 problems being actively debated, and people only post new ones when the previous discussions slow down, I think one thread will be fine.
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03-08-2009 , 09:06 PM
There's plenty of room for new stuff in this forum (obviously), so new threads are fine. Generally I don't think megathreads are the best thing..

But it's early yet, so let's just see how things develop.
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03-08-2009 , 09:22 PM
Quote:
Originally Posted by swingdoc
This first one is from a game I played recently. White is to move. Black just played Be7xh4 because OMG free pawn! Is this a good move for black? What should white play? I'll warn you that finding all the lines is difficult, but the ideas and main line(s) are relatively straightforward.
Spoiler:
What about Rxh4, if Qhx4 then Nxc7+ forking the king and rook.


I think separate threads for each problem >>> then one monster thread.
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03-08-2009 , 11:09 PM
Read my spoiler for Black's response after your first move guys.
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03-09-2009 , 01:16 AM
Quote:
Originally Posted by YouKnowWho
Read my spoiler for Black's response after your first move guys.
++

Black has a little in betweener with the move alot of guys are suggesting.
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03-09-2009 , 02:16 AM
Just had this in a 1 minute game, thought it was a cute tactic

http://img16.imageshack.us/my.php?image=puzzlem.jpg
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03-09-2009 , 02:19 AM
Quote:
Originally Posted by KingDan
Just had this in a 1 minute game, thought it was a cute tactic

http://img16.imageshack.us/my.php?image=puzzlem.jpg
Spoiler:
Qe4 is definitely nice. Well done!
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03-09-2009 , 02:36 AM
Quote:
Originally Posted by KingDan
Just had this in a 1 minute game, thought it was a cute tactic

http://img16.imageshack.us/my.php?image=puzzlem.jpg
That is extremely pretty. In the future you might consider minimizing the chat or dragging the window so we can't see your moves

Spoiler:
Also, this is kind of a funny position because it's really easy to find if you know it's a tactics problem (because, well, it's forced) but I could see possibly calculating this far and mucking the whole line, ya know?
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03-09-2009 , 03:55 AM
I'm looking through my old games and found this position. It's Black (me) to move.


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03-09-2009 , 05:38 AM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.
Spoiler:
1.-Kf4 2.Nd3 (or 2.Kd3 Bb2 for example) Kf3 3.Nc1 and i think 3.-Ke3 and 3.-g4 both win. Maybe 3.-Ke3 is more clear-cut, 4.Nd3 g4 5.Ne1 g3 and seems like White has no tricks or chances to get into a non-losing pawn ending
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03-09-2009 , 07:49 AM
There are two very nice endgame study compositions from the "Corus
Study Day" (one composed by Jan Timman this year) not too long ago.

Here's the link to the March 1, 2009 chessbase article:

http://chessbase.com/newsdetail.asp?newsid=5254
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03-09-2009 , 12:01 PM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.


Spoiler:
Is there definitely something here? I've spent way too long looking at this and white seems to manage to defend in every single attempt black has. Going to bed now, will look more tomorrow.
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03-09-2009 , 12:04 PM
Quote:
Originally Posted by smilingbill
Spoiler:
1.-Kf4 2.Nd3 (or 2.Kd3 Bb2 for example) Kf3 3.Nc1 and i think 3.-Ke3 and 3.-g4 both win. Maybe 3.-Ke3 is more clear-cut, 4.Nd3 g4 5.Ne1 g3 and seems like White has no tricks or chances to get into a non-losing pawn ending
Spoiler:
White is not forced to retreat back behind his pawns. If black promotes/exchanges then white has time to race in front and go for black's pawns, winning! A king and pawn on the 7th versus a knight with access to the promotion square is a draw, so once white's knight gets resituated, white's king is free to go play pacman with black's pawns.

Last edited by Dire; 03-09-2009 at 12:10 PM.
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03-09-2009 , 12:15 PM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.


Spoiler:
I am too lazy to calculate anything at this moment, but I believe that simple 1.. a5 should be enough for black to win.
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03-09-2009 , 02:52 PM
Quote:
Originally Posted by Dire
Spoiler:
White is not forced to retreat back behind his pawns. If black promotes/exchanges then white has time to race in front and go for black's pawns, winning! A king and pawn on the 7th versus a knight with access to the promotion square is a draw, so once white's knight gets resituated, white's king is free to go play pacman with black's pawns.
Spoiler:
wtf dude you can't just make a blatantly wrong blanket statement like this without giving variations. didnt you post something about not assuming everyone is a chess fish actually 5.-ke2 is a cleaner win instead of 5.-g3, which _might_ just be a draw
edit: verified with rybka now. seems like the "simple" winning line after 1.-Kf4 2.Kd3 could be 2. Kd3 Bb2 3. Nc2 Kxf3 4. Nb4 g4 5. Nxc6 g3 6. Ne5+ Kf4 7. Ng6+ Kg5 8. Ne5 g2 9. Nf3+ Kg4 10. Ng1 Bc1 11. c6 Bf4 12. Ke2 Kg3 13. Nf3 Bd6 14. Ke3 Bb8 15. Ke2 Bf4 16. Ng1 Kh2 17. Nf3+ Kh1, heh.

Last edited by smilingbill; 03-09-2009 at 03:03 PM.
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03-09-2009 , 04:41 PM
Quote:
Originally Posted by YouKnowWho
Spoiler:
I am too lazy to calculate anything at this moment, but I believe that simple 1.. a5 should be enough for black to win.
This was my instinct as well. It's going to make it hard for the white king to do anything useful.
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03-09-2009 , 04:44 PM
OP's position

Spoiler:
What happens after Rxh4 c6; Bxh6? Presumably Qxh4; Bxg7 cxd5 Bxh8? or of course cxd5, Bxg7 Qxh4 is the same thing. So maybe gxh6; Rxh6 cxd5; Rxd6?


p.s. I don't have a board and haven't played in so long I get confused 2 moves ahead
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03-09-2009 , 04:55 PM
"Solution" to main line.

I checked this as best as I could with Frtiz6 (on Chessbase Light). Though, that's no guarantee.

Spoiler:

1...Kf4
2. Nd3+ Kxf3 (I'm considering Nd3+ the main line. Perhaps Dire is looking 2.Kd3)
3. Nxc1 Ke3
4. Nd3 g4
5. Nd1 a5 (...a5 seems to serve well as a waiting move, though I was trying to hem in the White King)
6. Ng2+ Kf2
7. Nh4 g3
8. Kd2 g2
9. Nxg2 Kxg2
10. Ke3 Kg3
11. Ke2 Kf4
12. Kd3 Kf3
13. Kd2 Ke4
14. Kc3 Ke3
15. King move, Kxd4


The capture of White's d-pawn is the point of what I'm calling the main line.

So, am I making a mistake in this line? Can White defend better?

Does White have better line instead of 2. Nd3+.
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03-09-2009 , 05:43 PM
Quote:
Originally Posted by Pyromantha
OP's position

Spoiler:
What happens after Rxh4 c6; Bxh6? Presumably Qxh4; Bxg7 cxd5 Bxh8? or of course cxd5, Bxg7 Qxh4 is the same thing. So maybe gxh6; Rxh6 cxd5; Rxd6?


p.s. I don't have a board and haven't played in so long I get confused 2 moves ahead
Spoiler:
Actually what about Bxh6 immediately? gxh6 Qxh6 Be7 Qg7 seems strong..
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