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

03-17-2009 , 06:12 AM
This position occured in my tournament game this weekend. I was black against some 1900+ guy. I realise that this shouldn't be hard at all for any 2000+ player, but a lot of weaker players should find it quite interesting. Writing one move is not sufficient - please write down the ENTIRE winning line till the point where black has a crucial advantage (there might be a couple wins in the end, so put the one where black has the largest advantage).

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03-17-2009 , 07:08 AM
Guess I'll use spoilers if people want to. Took me ages to analyze after the first couple of moves:

Spoiler:

1... Qh1+ 2. Kf2 Rd2+ 3. Ke3 Rg2

Here I spent a lot of time on 4. Qh4 because of the implied threat of Qe7+ Kg8 Qg7#, so unless black can find a way to mate black with check every move this line is winning for white. 4... Nd5+ 5. Kf3 is obvious. But then... took me ages to find fxg4+ etc.

So here 4. Rxh1 is the right move.

Then seems like 4... Rxg3+ 5. Kf2 Rf3+ 6. Ke2 Rxb3 should be winning with black up two pawns and one more about to fall unless white can come up with some good tricks.

There might be something with 4... Nd5+ as well, but I couldn't be bothered analyzing it further.

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03-17-2009 , 07:57 AM
Quote:
Originally Posted by YouKnowWho
please write down the ENTIRE winning line till the point where black has a crucial advantage (there might be a couple wins in the end, so put the one where black has the largest advantage).
Spoiler:
1.-Qh1+ 2.Kf2 Rd2+ 3.Ke3 Qd5 (threatening Qxb3+ and Rg2) and seems that black wins, for example 4.Bc3 Rg2 or 4.Qh4 g5 5.fxg5 f4+ (5.Qh5 Rg2)
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03-17-2009 , 08:53 AM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.


How bad am I at chess if I thought black was going down in this puzzle
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03-17-2009 , 04:00 PM
Quote:
Originally Posted by Jigsaws
Guess I'll use spoilers if people want to. Took me ages to analyze after the first couple of moves:

Spoiler:

1... Qh1+ 2. Kf2 Rd2+ 3. Ke3 Rg2

Here I spent a lot of time on 4. Qh4 because of the implied threat of Qe7+ Kg8 Qg7#, so unless black can find a way to mate black with check every move this line is winning for white. 4... Nd5+ 5. Kf3 is obvious. But then... took me ages to find fxg4+ etc.

So here 4. Rxh1 is the right move.

Then seems like 4... Rxg3+ 5. Kf2 Rf3+ 6. Ke2 Rxb3 should be winning with black up two pawns and one more about to fall unless white can come up with some good tricks.

There might be something with 4... Nd5+ as well, but I couldn't be bothered analyzing it further.

You were mostly right.
Spoiler:
However, 4... Nd5+ wins even more material, as white has to play 5. Kf3 (5. Kd3 Ba6 mate), then 5.. Nc3+ 6. Ke3 Rg3+ 7. Kf2 Bxh1 8. Kxg3 Nxb1.
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03-17-2009 , 04:04 PM
Quote:
Originally Posted by smilingbill
Spoiler:
1.-Qh1+ 2.Kf2 Rd2+ 3.Ke3 Qd5 (threatening Qxb3+ and Rg2) and seems that black wins, for example 4.Bc3 Rg2 or 4.Qh4 g5 5.fxg5 f4+ (5.Qh5 Rg2)
Quite a lot of mistakes in this line

Spoiler:
3.. Qd5 is certainly also winning for white, but the move I was looking to was 3.. Rg2, which is just crushing. In your given line, after 3.. Qd5 you are not really threatening Qxb3 are you? It leaves the rook hanging.. After 3.. Qd5 white has to play 4. Qh4, after which black has to respond with 4.. Qd7 or d8, defending the night and also creating a space for a knight. In the line you gave, 5.. f4+ is not a legal move, the pawn is pinned.
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03-17-2009 , 04:17 PM
Quote:
Originally Posted by YouKnowWho
Quite a lot of mistakes in this line

Spoiler:
3.. Qd5 is certainly also winning for white, but the move I was looking to was 3.. Rg2, which is just crushing. In your given line, after 3.. Qd5 you are not really threatening Qxb3 are you? It leaves the rook hanging.. After 3.. Qd5 white has to play 4. Qh4, after which black has to respond with 4.. Qd7 or d8, defending the night and also creating a space for a knight. In the line you gave, 5.. f4+ is not a legal move, the pawn is pinned.
If quite a lot = one error and another slightly suboptimal move, then I agree :P I am really threatening Qxb3+ because the queen hangs on g3. missed that the f-pawn becomes pinned after 4.Qh4 g5 tho But 4.-Qd8 wins pretty easily instead of g5.
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03-17-2009 , 04:22 PM
Here is one I had today on Chess Tempo that I really liked.

White just played Rb4. Black to move. Show the whole line.


Last edited by ATrebek; 03-17-2009 at 04:22 PM. Reason: Sorry for the huge image
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03-17-2009 , 04:35 PM
Spoiler:
Rxb4 d8=q kg7
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03-17-2009 , 05:12 PM
Quote:
Originally Posted by garcia1000


Here is a "Black to move and find a plan to increase his advantage although he will need to take it deep into the endgame to win and it doesn't even win a pawn or anything"

So, that's the position.

1) What's White's plan?
2) What's Black's plan?
3) What should black do now?

This is from a grandmaster game. If you can't guess what black played, at least see if you can get the theme!

This is rated VERY HARD. Because I found it very hard.
White is in serious trouble here: every Black piece is better than White's
counterpart and White's pawn structure is much worse, esp. with a weak
a5 pawn. If White can somehow trade his bishop for Black's knight, that
would help; if White can get his c-pawn to c4 perhaps supported by a
pawn on b3, he might hold.

I see two ideas for Black:

a) 1...Bf6 2. Re1 Bd8 3.b4 Bf6 with the idea of giving White a permanent
backward c-pawn; or

b) 1...Ba7 with an eventual "commital" ...f5 banking everything on Black's
much better pieces. I think ...f5 gives up a lot : d6 and e6 are "hanging
pawns" and White no longer has a relatively bad bishop.
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03-17-2009 , 07:31 PM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.


Quote:
Originally Posted by timex
How bad am I at chess if I thought black was going down in this puzzle
It's probably a matter of not recognizing endgame strengths and weakness. Black's active King versus White's passive King is the key part of this position.

Bishops tend to be better than knights. But, you need pawns on both sides of the board. In this exact position, White's knight is really passive being stuck defending the f3 pawn.
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03-17-2009 , 11:25 PM
Quote:
Originally Posted by bigpooch
White is in serious trouble here: every Black piece is better than White's
counterpart and White's pawn structure is much worse, esp. with a weak
a5 pawn. If White can somehow trade his bishop for Black's knight, that
would help; if White can get his c-pawn to c4 perhaps supported by a
pawn on b3, he might hold.

I see two ideas for Black:

a) 1...Bf6 2. Re1 Bd8 3.b4 Bf6 with the idea of giving White a permanent
backward c-pawn; or

b) 1...Ba7 with an eventual "commital" ...f5 banking everything on Black's
much better pieces. I think ...f5 gives up a lot : d6 and e6 are "hanging
pawns" and White no longer has a relatively bad bishop.
This is great and plan a) was what really happened and white had a permanent backward c-pawn!

A+
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03-18-2009 , 11:22 AM
Quote:
Originally Posted by Dynasty
It's probably a matter of not recognizing endgame strengths and weakness. Black's active King versus White's passive King is the key part of this position.

Bishops tend to be better than knights. But, you need pawns on both sides of the board. In this exact position, White's knight is really passive being stuck defending the f3 pawn.
I'm pretty sure he meant he thought black was moving downward on the board.
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03-18-2009 , 11:55 AM
Quote:
Originally Posted by BobJoeJim
I'm pretty sure he meant he thought black was moving downward on the board.
This
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03-22-2009 , 07:13 PM
Quote:
Originally Posted by Dynasty
I'm looking through my old games and found this position. It's Black (me) to move.


I think 1...Bf4, with the idea of limiting White's mobility via Bc7-a5, might give Black decent winning chances. White has no safe square from which to attack Black's pawns on c6 and d5, and Black can mark time with his B between f4, c7, and a5, and try to work out how to time an attack on f3 with his K. White has to be extremely careful not to allow a piece trade, because any pawn ending looks extremely dangerous, if not lost outright, for him.

Obviously, precise analysis is required, but it seems like a reasonable idea for investigation (unless it's already been determined that your main line of 1...Kf4 is a forced win).
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03-24-2009 , 01:30 AM
Here is one for beginners like me from a game I just played. It may or may not be interesting. I did not see it at the time.



White to move (and win?).
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03-24-2009 , 01:55 AM
Spoiler:
I see
Rxf7+ Kxf7
Re7+ Kg8
Qf6 Rd1+
Kh2
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03-24-2009 , 04:17 AM
Quote:
Originally Posted by garcia1000
Spoiler:
I see
Rxf7+ Kxf7
Re7+ Kg8
Qf6 Rd1+
Kh2
Spoiler:
Close. You get the idea. The computer gave me was this:
Rxf7+ Kxf7
Re7+ Kg8
Re8+ Kg7
Qe7+ Kh6
Qh4+ Kg7
Re7+ Kf8
Qf6+ Kg8
Re8#

It seems like Qf6 is even better since it leads to mate on next white move, why does the cpu suggest all of these moves? lol, maybe I'm missing something. Sure looks like Qg7# cannot be stopped. Anyways the point is to sacrifice the rook. That didn't occur to me in the game which is why I still suck. Perhaps because I am using Crafty to spot errors...

Last edited by vixticator; 03-24-2009 at 04:27 AM.
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03-24-2009 , 05:20 AM
CPU is giving Re8+ instead of Qf6 because it is the quickest forced mate. Of course Qf6 is winning, but black can then delay mate with Rd1 Kh2 Rd1+ Kh1 Qe1+ Re1 Bd7 or something from that sort, so CPU will always give the other line as a first choice.
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04-03-2009 , 10:09 AM
Here's one for weaker players like me.



You were up an exchange, but you just hung your rook to a discovered attack (the last two moves were 1. Rf1d1? Nd4e2+! 2. Kg1h2 Qd7xd1). But all is not lost. White to move and achieve at least a draw. (That part is easy. If white decides to go for the win, how should he proceed?)
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04-03-2009 , 10:23 AM
Ra1 doesn't work because then the black queen protects the diagonal. I don't see anything better than Rxe2
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04-03-2009 , 10:47 AM
Quote:
Originally Posted by garcia1000
Ra1 doesn't work because then the black queen protects the diagonal. I don't see anything better than Rxe2
Spoiler:
What happens if you play Rxe2, but then don't force a draw?
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04-03-2009 , 10:50 AM
Spoiler:
Well, after Re2 Qe2 loses for black, so he has to play Be6. Then after Rd2 he plays Qa1, and I don't think there is any way for white to win this position. Of course white can take a pawn on b7, but it will not be winning anyway..
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04-03-2009 , 10:51 AM
Nevermind, it might be possible for white to win that, so that is probably the best try.
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04-03-2009 , 03:14 PM
Quote:
Originally Posted by bobman0330
Here's one for weaker players like me.



You were up an exchange, but you just hung your rook to a discovered attack (the last two moves were 1. Rf1d1? Nd4e2+! 2. Kg1h2 Qd7xd1). But all is not lost. White to move and achieve at least a draw. (That part is easy. If white decides to go for the win, how should he proceed?)
White must be almost winning (there is a nice tactic!) .

Spoiler:


There are essentially two lines:

a)
1. Rd2 Qg1+ (1...Qa1?? 2. Bf6 ) 2. Qxg1 Nxg1 3. Rd8+ Kg7 4. Kxg1 f6 ( White
was threatening e5; 4..h6? 5. Be3 g5 6. Bd4+ ) 5. Be3 and now f6 is very
weak. White's plan is simply Bd4, g4 and Black can't disentangle with ...b6
and ...Bb7 because of Rd7+.

This seems not as strong as

b)
1. Rxe2 Be6 ( 1...Qxe2? 2. Qd8+ Kg7 3. Bf6+ Kh6 4. Qf8+ Kh5 5. Qc5+ Bf5
6. Qc1 { with the idea of Qg5# } h6 7. Qe1! threatens the Qh4# and Qxe2
and on 7...Qxe1 8. g4+ Bxg4 9. hg4#; against 1...Bd7, simply 2. Qxb7 but
not 2. Rd2 Qxa4 3. Qf6 when 3...Ra6 4. Qd8+ Be8 seems to hold) 2. Rd2
( 2. Qb2 with the idea of Bh6 seems to fail to 2...Qd6+) and now:

2...Qe1 (to guard d2 square) fails to 3. Rd8+ Rxd8 4. Qxd8+ Kg7 5. Bf6+ Kh6
6. Qf8+ Kh5 7. g4+ with mate next move.

2...Qa1 3. Rd8+ Rxd8 4. Qxd8+ Kg7 5. Be3 and the eventual Bd4 is
unstoppable: e.g., 5...Qe5+ 6. f4.


Anyone care to check this?


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