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|Nov-13-08|| ||johnlspouge: The puzzle move 33...Bh3+ is a foregone conclusion, by the way, and it is always reassuring to know the first candidate move. Look at the position before 33...Bh3+ and after: Black has improved the position of Bd7, reduced the support of Bf3, and opened the possibility of ...Be3, pinning Qf2 to Kg1. You cannot ask much more of a single move.|
|Nov-13-08|| ||johnlspouge: Thursday (Medium):
C Lutz vs Kramnik, 1995 (33...?)
Black to play and win.
Material: B for N+2P. The White Kg2 has 3 legal moves, all on the back rank. The Kg2 also is the sole support of Qf2, which Qe3 attacks, suggesting a deflection or decoy combination. The Black Rf8 pins Bf3 to Qf2, and Bd7 can give check at h3, one of the weak light squares around the White K. Only the Black Bh6 requires activation. Note that Bh6-g7 threatens both Nd4 and Ra1 along the long diagonal. The Black Kh8 is presently secure.
Candidates (33…): Bh3+
33…Bh3+ 34.Kg1 [else 34…Qxf2]
34…Qc3 (threatening 35…Qxa1 or 35…Be3 pinning and winning Qf2)
35.Re1 [Nc2 Rxf3] Bg7 (threatening 36.Qxd4, or 36.Bxd4 pinning and winning Qf2)
The doubly attacked White Bf3 has only one support after Nd4 disappears, so White loses Bf3 in a compromised position. The pressure on the White Kg1 then ensures a Black win.
Toga gives my 35...Bg7 as a draw, because of
36.Rd1 Bxd4 37.Qxd4+ Qxd4 38.Rxd4 Rxd3
The endgame makes B for 2Ps a fair trade.
|Nov-13-08|| ||DaveyL: I didn't get it - I thought Black offered a draw.
|Nov-13-08|| ||patzer2: For today's Thursday puzzle solution, Kramnik plays the deflection 33...Bh3+! to initiate a winning combination which cleverly combines the deflection (removing the guard or defender), double attack, weakened back rank and pinning tactics.|
In the final position, White has no good answer to Black's dual threat of 32. Re2 Qc1+ (exploiting the weakened back rank) or 32. Rd1 Be3 (pinning and winning the Queen).
|Nov-13-08|| ||chrisowen: Needs no dumbass noticing 33..Bh3 but where does white stumble? It seems C Lutz gets lumped with a poor position near move 30-31 but only the likes of a Kramnik can exploit it. 35..Bd2 and white will drop a piece or worse.|
|Nov-13-08|| ||agb2002: The white bishop is pinned. This suggests 33... Bh3+ to remove one of the defenders. After 34.Kg1 Qc3 35.Re1 Bg7|
A) 36.Nb5(c2,e2) Qxf3 37.Qxf3 Rxf3 winning a piece and threatening the white king.
B) 36.Rd1(e4) Bxd4 37.Qxd4+ (37.Rxd4 Rxf3) Qxd4 38.Rxd4 Rxf3 39.Rd1 Ra3 and Black should win the endgame.
Perhaps there is something better for Black than this but I can’t see it.
|Nov-13-08|| ||Patriot: I analyzed the whole sequence as played in the game (even Bd2) but still wasn't sure. Apparently I didn't realize how strong this threat was.|
Nice explanation <Once>.
<darth sh... wrote: i to saw the first 2 moves but failed to see the 3rd. can anyone give me some advice how to look that slight bit deeper?>
The third move admittedly was easy to see for myself, but I failed to recognize just how threatening the move was. Maybe this is a visualization problem on my part. But if you never considered the move, it could be a flaw in your thought process or a board vision problem or maybe you just lack the time to analyze it properly. A good thought process includes looking at all forcing moves (i.e. checks, captures, and threats) until the position becomes quiescent or is clearly winning. You saw the first two forcing moves Bh3+ and Qc3 and I assumed Re1 but didn't consider the final threat Bd2. In the case of a board vision error, you are having trouble seeing the position in the mind's eye. I think only practice analyzing complex positions without moving the pieces and then checking your analysis against a chess program or a strong player can help resolve this. If you just didn't have much time to analyze correctly, then this is similar to OTB situations where you must stop analyzing and play the best move you found so far.
Hope this helps...
|Nov-13-08|| ||agb2002: I saw 35... Bd2 but thought that 35... Bg7 was stronger without paying due attention to the former. Conclusion: laziness is the worst sin...|
|Nov-13-08|| ||patzer2: Kramnik's 29...Qe8! appears to be a decisive turning point in this game, giving Black a clear advantage with the initiative and a strong attack.|
|Nov-13-08|| ||njchess: I got this one pretty quickly. 33. ... Qh3+ was fairly obvious, as it was the only real forcing move. White must move 34. Kg1 or lose his queen.|
At this point, some players had trouble. In order to find the next two moves for Black, you would have had to have noticed two things. First, White has very little control of the dark squares since, currently, his knight and bishop are light square controlling. Second, after the 34. Kg1, White's queen and king rest on dark squares.
Given the above, Black's idea of pinning White's queen to the king with his bishop is straightforward. But, to do that, Black must first move his queen. 34. ... Qc3 is arrived at because it is the only safe, dark square that covers the bishop on e3.
White's reply is practically forced since any move other than 35. Re1 loses material. But, again, Re1 is subject to attack by Black's dark square bishop from d2. After 35. Re1 Bd2, White cannot avoid losing material, which at this point, means losing the game. Good piece of tactics from Kramnik.
As an aside, this was a pretty passive game by White, and he paid for it. White parried Black's queen side play nicely, but in the face of Black's imminent f5 thrust to break up the center, he castled king side. It's not really a bad move, but its not the strongest move since it does not pressure Black in any way.
Since Black is under no pressure to play f5 immediately, 17. ... g6 strengthens his grip on f5. After the tactical moves of 18. Qe2 (better was Qd3) Bd7 19. Rfa1 Bh6, White misses his last chance to hold the center when he plays 20. g3? (intending a later f4). Better would have been Rd1, or Nce3 followed by f3. From move 20 on, it's all about Black's steamroller pawns and White's attempts to stop them.
Some passive play by White allows Kramnik to gain the advantage and seal the game with some forceful moves. Nicely played by Black.
|Nov-13-08|| ||gawain: <The third move admittedly was easy to see for myself, but I failed to recognize just how threatening the move was.> Yes Patriot, this is exactly what happened to me. |
I quickly saw the first three moves, reaching the position in which Lutz resigned. And then I hallucinated. I thought W could continue 36 Re2 Qc1+ 37 Qf1. Ha! How can someone see the clever moves and miss the utterly obvious? Maybe I should have had a second cup of coffee this morning.
|Nov-13-08|| ||patzer2: Perhaps White should have played 22. Qh5, when 22...Bg7 23. Nce3 to = appears to give him active play and winning chances.|
|Nov-13-08|| ||NakoSonorense: <DoubleCheck><I think you meant Bd2 :)> Yes! Thanks! That's what I meant. I still don't have the chess board tattooed on my mind...|
|Nov-13-08|| ||mindmaster: I got everything right except for the 35. Re1 I thougt white can resign after 34. ... Qc3|
|Nov-13-08|| ||Woody Wood Pusher: I saw 33...Bh3+ 34.Kg1,Qc3 but wasn't sure after this as I thought white could just resign.|
35.Re1 only keeps him alive 1 more move and hopefully I would have seen 35..Bd2 in the game (or 35..Bg7 ).
|Nov-13-08|| ||Patriot: <Woody Wood Pusher> I think 35...Bg7 may be = as Johnlspouge pointed out after 36.Rd1 but certainly isn't decisive as 35...Bg7 36.Rd1 Bxd4 37.Qxd4+ Qxd4 38.Rxd4 Rxf3 and 39.Rf4 or 39.Rd1. White has two pawns for the bishop which is not resignable.|
|Nov-13-08|| ||kevin86: It appears as if white was put in handcuffs-and then tickled.|
The rook is attack but must not leave the file on penalty of 36...♗e3,winning the queen or the first rank on penalty of mate.
A possible conclusion:
36 ♖e4 ♕c1+ 37 ♖e1 ♗xe1 38 ♕e2 ♗xg3+ 39 ♕d1 ♕xd1+ 40 ♗xd1 ♖f1#
|Nov-13-08|| ||zb2cr: Hi <kevin86>,
You wrote: "It appears as if white was put in handcuffs-and then tickled."
On your suggested possible conclusion, I still think that the line which <notyetagm> suggested before this was a problem is best--if the Rook leaves the first rank, 36. ... Qa1+. I'm at the office and do not have an analysis program handy, but I suspect it would show that the Queen check from a1 is stronger.
|Nov-13-08|| ||tatarch: This would also be a good sunday puzzle to start at move 31.|
|Nov-13-08|| ||YouRang: Got it. Our queen is in take and unless we find a strong tactic, it looks like we're facing a lost endgame. Therefore, trading queens or moving our queen to safety doesn't seem promising.|
However, on obvious tactic is 33...Bh3! forcing 34.Kg1 (or else white loses his Q). What does this accomplish? It sets up other tactics!
One is that now black's K and Q are on a diagonal that can be pinned by our DSB (which happens to be well-placed for that purpose). Another is that white's K is facing back-rank dangers now that g2 is and f1 are under our control.
To activate the DSB pin, we need to vacate our Q from e3 so we can put the bishop there, but do it with attack so white doesn't have time to defend. It's not hard to find something to attack with our queen, and again, 34...Qc3 attacking the rook (and the knight) is the clear choice.
White has one way to save his rook and defend against the bishop pin (...Be3), and thats 35.Re1.
This is the first time I had to really think hard. However, in the absence of any other useful ideas, I eventually considered the blunt attack on the rook with 35...Bd2!, and somewhat to my surprise, it leaves white helpless. :-)
The rook can't leave the e-file since it's guarding against ...Be3, nor should it leave the 1st rank since it's defending against back-rank vulnerabilities, eg. 36.Re2 Qc1+ 37.Re1 Bxe1
|Nov-13-08|| ||beginner64: Holy smokes. I saw 33..Bh3+ 34. Kg1 Qc3. 35. Re1 (to prevent against Be3)|
BUT, I did not see the all important move 35..Bd2.
|Nov-13-08|| ||beginner64: Must say that 28. Qa2 comes across as a *pretty* bad move. 28. Qb2 would at least put it on an attack diagonal.|
Any engine comparison of 28. Qa2/Qb2?
|Nov-13-08|| ||amateur1971: got it 2day...|
|Nov-13-08|| ||szajjbus: Does the line ..33.Bh3+ 34. Kg1 Rc8 also lead to win? The plan is Rc1+.|
|Nov-13-08|| ||skemup: I saw this line (played in game) but i forgot about it :) and starded thinking about line 35..Bh7.|
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