< Earlier Kibitzing · PAGE 3 OF 3 ·
|Apr-30-08|| ||zb2cr: 33. ... Rxg3+ is easy to see. White must take, since moving the King to the h-file is met by 34. ... Rh3+, which wins White's Bishop.|
But after 34. fxg3, Black has a Pawn fork with 34. ... f2+. Now White has two possible moves: 35. Kh2 or 35. Kg2.
In both cases, Black must resist the temptation to carry out his Pawn fork threat with 35. ... fxe1=Q, because after 36. Rxe1, Rf1; 37. Rxe2 eliminates Black's 2nd advanced Pawn. So Black must then play 35. ... f1=Q. After 36. Rxf1, Rxf1; 37. Rxf1 the Pawn Queens if White moved his King to h2 back on move 35, so the critical line is the one arising from 35. Kg2. But in this case, Black can decoy the White King away with an unsupported skewer attack--37. ... Bh3+! If White takes the Bishop, the Pawn Queens safely with check. If he moves his King away, say 38. Kf2, then again the Pawn Queens safely, because it's supported by the Bishop.
I'm so happy I was able to see this all the way through--my board vision usually gives out much sooner than 5 full moves.
|Apr-30-08|| ||TrueBlue: is it just easy, or was this way too easy?!?!? I literally saw it in less than a second, would have played it in a blitz game right away. And I don't always say that. It took me more than 10 minutes to figure out yesterday's puzzle.|
|Apr-30-08|| ||mikhs: I agree with TrueBlue....This seems easier than yesterday's puzzle|
|Apr-30-08|| ||handle: Yeah, it was alot easier than yesterday. I mean, to the point where I probably would've played it even over the board, not knowing it was a puzzle.|
|Apr-30-08|| ||GibGezr: Very easy; it helps that this was a puzzle, so my eye is immediately drawn to saccing the rook to open up the position.|
|Apr-30-08|| ||Jimfromprovidence: White should have played 33 Bxf3, not g3. Then after 33...Rxf3 34 Rxe2 Rf5, below, he's in better shape than the text. |
click for larger view
White's pawn structure is awful, so he'll lose his d5 pawn and his h pawn, but he can stilll play on for a while longer.
|Apr-30-08|| ||benveniste: I found yesterday's puzzle a lot easier. Today's first two moves are easy to see. But the sequence starting with f1=! instead of fxe1=? and ending with h3+! defeated me. |
As a results, I ended up trying 33. ... g4?! which wins much more slowly.
|Apr-30-08|| ||kevin86: I tried another idea,setting up a mate at h1-starting with 33...xh7 but I believe that white can stave off the attack with 34 xf3 xf3 35 xe2 and white will have three pawns for the bishop.|
|Apr-30-08|| ||Pianoplayer: 33...xg3!! Wow!!. Of course I guessed it but still a great move.|
|Apr-30-08|| ||sombreronegro: 33... Rxg3 leads to all kinds of mayhem. Capturing opens up a pawn fork and two pawns on the 7th rank. Declining leads to a rook fork losing material etc. Two pawns supporting each other on the seventh rank look to be fatal for white.|
|Apr-30-08|| ||jheiner: 33...? Black to Play. White is in a bind with little counterplay. The key features are Black's pawns at e2 and f3. Let's get a Q.|
The candidate combination is 35...Rxg3+ 36.fxg3 f2+ 37.Kg2 fxe1 38.Rxe1 and now what?
In a perfect world, Black would like White's K on the back rank, so that an eventual Rf1+ protected by the P on e2 would allow Rxf1 and exf1=Q. But the White K has too many escape squares.
Since White has no real counterplay (can't remove R from back rank, B is ineffective) Black has time to play a quiet move.
33. ...Bh3! removes the g2 square, protects the f1 square and generally makes the combination work.
Now...34. (White moves?) Rxg3+ 35.fxg3 f2+ 36.Kh2 (Kh1 ends faster, see shortly) fxe1=Q 37.Rxe1 Rf2+ 38.Kxh3 Oops.
Well...that fails. And the (White moves?) might have a brilliance somewhere that we miss. Who knows. Maybe counterplay up the c-file.
Let's try something simpler. If we just push the pawn and win material. Right now we're greedy for the Q, but the win of a R suffices.
33...Rxg3+ 34.fxg3 f2+ 35.Kg2 f1=Q+ 36.Rxf1 exf1=Q+ 37.Rxf1
And 37...Bh3+ wins the exchange. The Q would have been nice, or a R up, but an exchange up with a passed pawn and a R vs. B endgame is enough.
Well, that was tough. Time to check.
And still missed it. I would like to think that maybe OTB the winning line could've been found. I did see the Bh3+ as the key move. Simply switching fxe1 for Rxe1 would have worked. OTB...perhaps.
Tough week. These are getting good.
|Apr-30-08|| ||Magic Castle: <YouRang> Regarding yesterday's post. You are right you have seen one more move ahead. I did not see the Knight's capture of the f pawn. Thanks...|
|Apr-30-08|| ||Blitzkrieger: <zooter>. I dont agree with <Stelling>, the move 35... Bh3+ leads to the same outcome, cause the rook on a1 doesn't have to capture on f1, but B:e2 which is a better option, hence the material advantage of black would be the same with what happened in game.|
|Apr-30-08|| ||zooter: <johnlspouge:<33…Rxg3+|
White must accept the sacrifice or lose a P without compensation.>>
That's what i thought initially, but it looks like if white doesn't take the pawn, he ends up getting immediately
After 33...Rxg3 34.Kh1(h2) Rh3+ 35.Kg1 Rg8+ 36. Bg4(g6) Rxg4(h6)#
|Apr-30-08|| ||zooter: <Blitzkrieger: <zooter>. I dont agree with <Stelling>, the move 35... Bh3+ leads to the same outcome, cause the rook on a1 doesn't have to capture on f1, but B:e2 which is a better option, hence the material advantage of black would be the same with what happened in game.>|
33...Rxg3 34.fxg3 f2+ 35.Kg2 Bh3? 36.Kxh3 f1=Q 37.Rxf1 Rxf1 38.Bxe2 Rxa1
Black is up a rook against a bishop (should be an easy win for black though) against the game where black goes a full rook ahead no matter how best the play is
|Apr-30-08|| ||mikejaqua: Rats! Missed that last bishop move.|
|Apr-30-08|| ||Blitzkrieger: <zooter> you are right, i forgot about the extra bishop the black has, calculation mistake :)|
|Apr-30-08|| ||Billy Vaughan: <<zooter> After 33...Rxg3 34.Kh1(h2) Rh3+ 35.Kg1 Rg8+ 36. Bg4(g6) Rxg4(h6)#>|
36. hxg8=Q+....unless I'm misreading the position.
I saw 33. ... Rxg3 but erred after 34. ...fxg3 f2+ 25. Kg2. I wanted to capture the rook with 25. ... fxe1, and when that didn't work I gave up :p
|Apr-30-08|| ||wals: 33. ...Rxg3 leapt out at me 34.fxg3... f2+ naturally follows,
35.Kg2...f1Q 36.Rxf1 ...Rxf1 should be enough for this puzzlle|
sure was, exactly by the text.
|Apr-30-08|| ||234: Tuesday puzzle <25. ...?> Apr-29-08 V Olexa vs Ujtelky, 1948|
|Apr-30-08|| ||cracknik: Yeah too easy for a Wednesday puzzle.|
|Apr-30-08|| ||ChessPraxis: Hi zooter. You said <After 33...Rxg3 34.Kh1(h2) Rh3+ 35.Kg1 Rg8+ 36. Bg4(g6) Rxg4(h6)#> However, Black wouldn't play 35. ... Rg8+ because the h-pawn can just take the Rook. Nevertheless, Black could pick off the Bishop, eliminate the pesky h-pawn, and then continue on with that devastating K-side attack.|
|Apr-30-08|| ||johnlspouge: <<zooter> wrote: <johnlspouge:<33…Rxg3+
White must accept the sacrifice or lose a P without compensation.>>|
<That's what i thought initially, but it looks like if white doesn't take the pawn, he ends up getting immediately
After 33...Rxg3 34.Kh1(h2) Rh3+ 35.Kg1 Rg8+ 36. Bg4(g6) Rxg4(h6)#>
Hi, <zooter>. The phrase "must accept the sacrifice or lose a P without compensation" is my code for "no need to look further". To avoid spending unnecessary amounts of time chasing lines that are obvious wins, I terminate at the win of a P without compensation. (See, e.g., my post on Sunday Igor Ivanov vs Kudrin, 1989 for further conditions I place on my "solution".)
It's always nice to get the line spelled out to completion, however. I actually missed that Bd7 protects Rh3 in your line or I would have stated it. So, thanks for looking over my shoulder and contributing something interesting.
|May-01-08|| ||zooter: Yes I apologize...no mate if white refuses to take the rook, but loses the bishop after Rh3+|
|May-01-08|| ||johnlspouge: <<zooter> wrote: Yes I apologize...no mate if white refuses to take the rook, but loses the bishop after Rh3+>|
On my behalf, no need to apologize. The effort to do something constructive automatically entails the possibility of error, and after that, there is never any shortage of critics. Because you advanced my understanding of the position, I appreciate your comment, warts (i.e., mate) and all.
< Earlier Kibitzing · PAGE 3 OF 3 ·