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|Jun-18-10|| ||Patriot: I spent a lot of time on this, just trying to understand the position. Black seems pretty tied up and threatens to wriggle out with moves like Nd4 or Rxd6 or Bc7. I figured if there is anything there, it must be 30.g6. I only calculated as far as 30...hxg6 31.Rxd8 Rxd8 32.Ng5, which looks very strong but I couldn't be sure it was best.|
|Jun-18-10|| ||CHESSTTCAMPS: Back to middlegame attacking positions. White has an extra pawn and power on the long diagonal. Add to this the fact that much of black's minor piece force is directed queenside and it is clear that white's chances are on the kingside. I looked briefly at Rh6 and Rxd8, but from my first look at the position, my major candidate was:|
This is easily reached on general principles: (1) It weakens g6 and the kingside pawn shelter. (2) it opens a post for the knight at g5. Working out the specific tactics is more effort (are we attacking g7, h7, or the back rank?), but the main line demonstrates white's concept:
A) 30... hxg6 31.Rxb6 Bxb6 32.Qg3! (Threatens Ng5, Ne5, and Qh4+. This took me a while to find because I was looking at playing Ng5 and allowing Qxf2+.) Qf4 33.Qxg6 Qf7 (Rf7 34.Ng5 Qxf2+ 35.Kh1 leaves black defenseless) 34.Qxb6 wins a piece with ongoing attack.
A.1) 32... Bd8 33.Ne5 Qg8 34.Nxg6+ Kh7 35.Qg4! (better than Nxf8+) Kh6 36.Nxf8+ Qxf8 Qxc4 wins a R.
A.2) 32... Bc7 33.Qh4+ Kg8 34.Ng5 wins.
B) 30... Bf6 31.gxf7 Bxe5 32.Bxe5 wins a piece.
C) 30... Qg8 31.Rxb6 Bxb6 32.Qd6! (gaining a tempo) Bd8 33.Ne5 (overloading the BQ) Na5 (Bb5 34.Be5 wins) 34.Bxa5 Bxa5 35.Nxc4 wins
C.1) 32... Rb8 33.Ne5 and the double threat of Nxc4 and 34.Nf7+ Bxf7 35.gxf7 Qf8 36.Qxb8! can't be met.
D) 30... Qa7/b7/c7 31.Qh5 h6 32.Qxh6+ Kg8 33.Qh7#
Time to see how this went...
|Jun-18-10|| ||et 9: How bad is 33.Ne6 ?!|
|Jun-18-10|| ||et 9: Oh yeah, the bish. sorry.|
|Jun-18-10|| ||David2009: Missed it completely. The entertaining pastiche from <Once> is consolation.|
|Jun-18-10|| ||patzer2: I've added Kavalek's 30. g6!!, today's Friday puzzle solution, to my demolition of pawn structure collection (sac on g6).|
On the surface, if you take just the moves played, it's a fairly straight forward combination in which the final 33. Qe4! forces Black to surrender the Queen to avoid a quick mate (e.g. 33...Qe8 34. Qh4+ Kg8 35. Qh7+ Kf8 36. Qxg7#).
However, there's a bit more going on in the puzzle position (30. ?) than just the game continuation. Here's a breakout of some of the possibilities using Fritz 10:
<30. g6!! hxg6>
Putting up more resistance is 30... Qg8, but White overcomes it after 31. Rxb6! Bxb6 32. Ng5 h6 33. Re4! when play might continue 33...Nd4 (33... Bd8 34. Rxc4 Bxg5 35. Bd5 Rf7 36. gxf7 Qf8 37. Qxg7+ Qxg7 38. f8=Q+ Kh7 39. Qxg7#) 34. Rh4 Rf6 35. Rxh6+ gxh6 36. Qxf6+ Qg7 37. Bxd4 cxd4 38. Qxb6 hxg5 39. Qd8+ Qg8 40. Qxd4+ Qg7 41. Qxc4 .
<31. Rxd8! Rxd8 32. Ng5 Qf8>
If 32... Qf6, then 33. Qg3! initiates a winning Knight fork to snare the Queen after 33...Nd4 34. Qh4+ Kg8 35. Qh7+ Kf8 36. Qh8+ Bg8 37. Nh7+ Kf7 38. Nxf6 .
If 32... Qd7, then 33. Qe4! wins, with ideas similar to the game, as play might continue 33...Nd4 34. Qh4+ Kg8 35. Bf1 Nf3+ 36. Nxf3 Be6 37. Ng5 Re8 38. Rd1 Qb7 39. Qh7+ Kf8 40. Qh8+ Bg8 41. Nh7+ Ke7 42. Qxg7+ Bf7 43. Qe5+ Re6 44. Qg5+ Rf6 45. Qxf6#.
<33. Qe4> 1-0
Black resigns in lieu of the mate threats 33...Qg8 (33... Qe8 34. Qh4+ Kg8 35.Qh7+ Kf8 36. Qxg7#) 34. Qh4+ Qh7 35. Qxh7#.
|Jun-18-10|| ||kevin86: The key for white was to open the h-file. That and the other weaknesses in black's position dooms him.|
|Jun-18-10|| ||David2009: 32...Qf8 seems to have been a mistake, CraftyEGT finds 32...Qd7 and now what?
click for larger view
Crafty link to the position at move 31: http://www.chessvideos.tv/endgame-t...
|Jun-18-10|| ||patzer2: <Once> Enjoyed the James Bond Goldfinger analogy in your description of the solution to today's puzzle. I still enjoy watching the older James Bond flicks, but somehow they seem much more amusing after having seen one of the Mike Myers Austin Powers movies.|
Haven't yet seen Myers "Goldmember" parody for which MGM, the distributors of the James Bond film franchise, sued in a failed attempt to change the film title, but now I might be interested.
|Jun-18-10|| ||tarek1: < David2009>
<32...Qf8 seems to have been a mistake, CraftyEGT finds 32...Qd7 and now what?>
Thanks. This is exactly the move that bugged me when examining the follow-up of <32.Ng5> and this is why I adopted <32.Qg5> instead.
|Jun-18-10|| ||tarek1: For example after <32...Qd7> <agb2002> gives <33.Qf4 Be6> but Be6 is awfully passive, I was concerned by <33...Nd4> which is perhaps better.
All in all this "puzzle" doesn't look as clean and clear-cut as is usually the case, I would rather put it in the category of (good) "positional sacrifice".|
|Jun-18-10|| ||chrisowen: White squashed black like a gadfly g6 hxg6 rxd8 rxd8 ng5 great in the air annoying horse posing the question why Bxc4?. With national pride racing in the blood Lubomir is well oiled machine. Down the wing ease clips knight in heal the rift Qe4 sets up the corner mate. It loses track back in 30..hxg6 goes bottoms up flanking offside Qg8 was preferred. White's smokescreen down the hfile good corridor definately supplied in Bednarski pass out.|
|Jun-18-10|| ||Patriot: <<David2009>: 32...Qf8 seems to have been a mistake, CraftyEGT finds 32...Qd7 and now what?>|
This is why I said I couldn't be sure the line was best. There are too many things to consider and white has already invested the exchange. I played against Crafty and couldn't come up with anything solid against 32...Qd7. What does the computer say?
|Jun-18-10|| ||Stuckman: 32...Qd7 crafty played this against me.
White has a B+N and a pawn for a R, but the game is still unclear. There are probably better ways for white to play, this is just what I came up with.
|Jun-18-10|| ||CHESSTTCAMPS: After 30.g6 hxg6, I came up with 31.Rxb6 Bxb6 32.Qg3, producing the following position:|
click for larger view
I thought this was winning, but there is a viable defense for black that I found with an engine after submitting my first post. Perhaps someone would like to try this without an engine, a good test for practicing defensive skills.
|Jun-18-10|| ||Patriot: <<CHESSTTCAMPS> I thought this was winning, but there is a viable defense for black that I found with an engine after submitting my first post. Perhaps someone would like to try this without an engine, a good test for practicing defensive skills.>|
I'm going to guess 32...g5. On 33.Nxg5 Qh5. On 33.Qxg5 Bd8.
|Jun-18-10|| ||Ferro: REINA VS HORSE!|
|Jun-18-10|| ||Once: <patzer2> I fear that Goldmember is probably the weakest of the three Austin Powers films. One to be watched to complete the set, but probably not one to cherish.|
Instead, might I direct your attention to the utterly cheesy and wonderful delights of Our Man Flint and In Like Flint?
|Jun-18-10|| ||keypusher: <Once: <patzer2> I fear that Goldmember is probably the weakest of the three Austin Powers films. >|
That's like trying to figure out which of the Three Stooges was the stupidest.
|Jun-18-10|| ||Marmot PFL: 30 g6 is an attractive move to break up black's pawn defences and free g5 for the knight. after 30...hg6 31 Rxd8 Rxd8 32 Ng5 black's queen must guard g7, nor can it leave the back row undefended. from there the end comes quickly|
|Jun-18-10|| ||MiCrooks: g6 seems like an obvious clearance, but how to follow up best is not totally clear. I like others didn't really consider Qg8. After Rxb6 Bxb6 the win is pretty easy and White has a number of paths. The Rook lift Re4 seems the most direct, but even Ng5 eventually gets the point, though the one line I saw here (Rc8/b8) is not likely to be played. Rather h6 not leaving the pawn on h7 as a target. Problem for Black is the Rook life STILL works here.|
I saw some analysis with g6 hxg6 Rxb6 Bxb6 Ng5 forgetting that Black now still has Qxf2+ where the chances seem equal. Black will play the Knight to block the dangerous White Bishop and it is anybodies game.
|Jun-18-10|| ||cjgone: Got g6, failed everything else, lol.|
|Jun-18-10|| ||CHESSTTCAMPS: <Patriot> <I'm going to guess 32...g5. On 33.Nxg5 Qh5. On 33.Qxg5 Bd8.>|
A good try (that I didn't see), but I believe that 33.Ne5 wins in that line, e.g. 33... Qe6 34.Qxg5, with the triple threat of 35.Ng6+,
35.Qh4+, and 35.Nxc4 Qxc4 36.Qh5+ Kg8 37.Bd5+.
I'll post later this evening to allow others to take a crack at it before the puzzle expires.
|Jun-18-10|| ||David2009: <CHESSTTCAMPS: After 30.g6 hxg6, I came up with 31.Rxb6 Bxb6 32.Qg3, producing |
click for larger view
I thought this was winning, but there is a viable defense for black that I found with an engine after submitting my first post. Perhaps someone would like to try this without an engine, a good test for practicing defensive skills.> CraftyEGT defends with 32...Kg8 - was this the defence your engine found? Playing the line out as White against Crafty using the link given earlier (http://www.chessvideos.tv/endgame-t... in Kavalek vs J B Bednarski, 1972) and using <Patzer2>'s attacking idea Bf1!! I found
32.Qg3 Kg8 33.Ng5 Qd7 34.Bf1! Be6 35.Nxe6 Rxe6 36.Bc4 Nd4 37.Bxd4 Qxd4 38.Bxe6+ Kh7 39.Qg4 Kh6 (the threat was 40. Re4) reaching
click for larger view
which ought to win easily but against Crafty there's many a slip between cup and lip.
I finally won on my third attempt, but was Black's early play really best?
|Jun-18-10|| ||johnlspouge: Friday (Difficult)
Kavalek vs J B Bednarski, 1972 (30.?)
White to play and win.
Material: Even. The Black Kh8 has 1 legal move, g8. White has a battery on the e-file, Re1 and Qe5, and another battery, Bc3 and Qe5, on the a1-h8 diagonal, pinning Pg7 to Kh8. The White Nf3 and Bg2 require activation. The Black Rb6 attacks Rd6. The White Kg8 is secured from check, although Black has a battery, Rf8 and Qf7, pointing at Pf2 behind Nf3.
Candidates (30.): Qxg7+, Rxb6, g6
30.g6 (threatening 31.gxf7 or 31.Qh5 h6 32.Qxh6+ and # soon)
30…hxg6 31.Rxd8 Rxd8 [else, drop B for P]
The exchange sacrifice frees Nf3 from defensive duties.
32.Ng5 (threatening 33.Nxf7+, 33.Qxg2#, or 33.Qg3 34.Qh4+ and # soon)
32…Q along 7-th rank [or Qf6] 33.Qg3 Rd4 34.Bxd4 wins
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