< Earlier Kibitzing · PAGE 3 OF 3 ·
|May-03-13|| ||Cubeseeker: Why did black take the pawn in his last move??|
|May-03-13|| ||Bartimaeus: <Cubeseeker> To prevent white's mate threat of 37. Rxf7+ Ke8 followed by Rxg7 and then mate on Rg8.|
|May-03-13|| ||mistreaver: Friday. White to play. Difficult. 34?
White's position is very strong, knigh on h7 makes a bad impression.
The general idea is to push e6 at some point and also to penetrate with the rook on the 7th rank via b7.
There is also exchange sacrifice on g7 which i think doesn't work.
So let's try:
34 Rxg7 Kxg7
35 e6+ Kf8
and white has nothing
this seems more logical, just to prove that white has a threat i will first play like a beginner for black:
35 Kb3 Ra6
36 Rxg7 Kxg7
37 e6+ Kg8
38 exf7+ Kf8
39 Ne5 and i think white is winning
while writing the text above, i noticed a "better defence" for black
34 ... Bh8
35 e6 Bxc3 (what else)
36 Rxf7+ Ke8
37 Rg8+ Nf8
38 Rgg8 mate
I would say that the best is:
34 ... Rg6
35 Rxg6 fxg6
36 Rxa7 altough i think white should win this endgame.
I will conclude my analysis here. I have this feeling that i missed some killer move, but will have to see how it really went.
Oops, i "guessed" correct, Rb7, obvious as it is, is very strong.
|May-03-13|| ||whiteshark: <Bartimaeus: <C) 34. Rb7 Re6 35. Rf4 Re7 36. e6 Bxc3 37. Rxf7+ Rxf7 38. Rxf7+ Kg8 39. Kxc3 Re8 40. Rxa7 Rxe6 and well, we have a pawn for our efforts but this is not convincing enough.>>|
After your move <36.e6> Rb7 is hanging.
My line goes 36.Rxe7 Kxe7 37.e6 Bxc3 38.Rxf7+ Kxe6 39.Rxh7 Bf6 with a defendable endgame.
Thin♔ that's it a Friday puzzle my solution is probably wrong, too.
|May-03-13|| ||Bartimaeus: <whiteshark> Correctly spotted. Gross oversight on my part. Actually, after 35. Rf4, the line you mention was one of the lines i had calculated but somehow got too engrossed with playing e6 in other lines, overlooked the hanging rook and forgot about it. To me the lines reached after 34..Re6 seem atleast worth fighting but then again comps might prove otherwise.|
|May-03-13|| ||Abdel Irada: <<> Converging vectors <>>|
This is an interesting sort of position. At first glance, White's advantage is minimal; Black's sole weakness appears to be his rather congested minor pieces.
Then we note points, and experience points to a focus: g7. This is a matter of vectors.
We already have one rook bearing down on the target square vertically, and the other is poised to line up against it horizontally.
Since this *is* a puzzle, the first thought is to sacrifice the exchange. But this doesn't work out after (a) 34. Rxg7?, Kxg7 35. e6, f6 36. Rb7, Kg8, when White has nothing and plenty of it.
But now another idea comes: What, then, if we reverse the order of rook moves?
<<> 34. Rb7! ... >
This isn't a spectacular sacrifice, although it does offer a pawn. But does Black really threaten to take it?
< (1) 34. ...Rxa2?!
35. Kb3, Ra6 >
Also possible is (b) 35. ...Rf2 36. Rf4, Rd3 37. R4xf7, Ke8 38. Rxg7, R2xf3 39. Rb8, Rd8 40. Rxd8, Kxd8 41. Rxh7 , when White has an extra piece.
< 36. e6 >
This move is cyanide. Black perishes after (c) 36. ...Bxc3? 37. Rxf7, Ke8 38. Rg8, Nf8 39. Rgxf8#, (d) 36. ...Nf6 37. Rxf7 (also good is 37. e7), (e) 36. ...Rd3 37. Rxf7.
This seems to suggest that Black doesn't have time to grab the pawn, so what else can he do?
< (2) 34. ...Re6?! >
This is meant to stop the tactics by holding back White's e-pawn. But it allows
< 35. Rxa7 >
Having offered an a-pawn, White now wins one of the same. This outside passed pawn might or might not suffice to bring home the victory, but White has another threat that will force material off the board advantageously: 36. Rf4.
Combined, these advantages in the hands of a Kasparov are daunting.
< (3) 34. ...Re8 >
This is intended to stop White's e6 without losing the a-pawn.
< 35. Rxg7, Kxg7
36. e6, Kg6
37. Rxf7, Nf8 >
Not (f) 37. ...Raxe6?/Rexe6? 38. Rg7 and White wins a piece.
< 38. Ne5, Kh5
39. Rf5, Kxh4
40. Rxf8! >
White wins a piece after 40. ...Rxf8 41. Ng6
Sometimes the merit of the first idea can be seen only in the outcome of the second.
But in all cases, to the vector goes the spoils.
|May-03-13|| ||Abdel Irada: Excellent avatar, <Bartimaeus>.|
|May-03-13|| ||Bartimaeus: Thanks <Abdel Irada>. btw, why the "infinity" symbol at the end ? new signature? :)|
|May-03-13|| ||awfulhangover: I gave up, since 24.Rb7 is met by Re6, and where is the fun? 35.Rxa7 is enough,but still by far the best. 34.-Rxa2+ is same as resigning.|
|May-03-13|| ||Bartimaeus: <Abdel> In your line 3) 34..Re8, isn't 35. e6 better for white than the rook sac ? |
34. Rb7 Re8 35. e6 (threatening Rxf7+ followed by Rxg7+) Raxe6 36. Bxg7+ and wins
|May-03-13|| ||chrisowen: Seed in be goofed based jump accounts for indeed b7, |
demonstrate g7 and f7 the targets one ford 34.rb7 river breached connecting rooks to show in lovely beating a path to his door 34...Rxa2+ low since 35.Kb3 advance off bet fairs better do the slide,
35...re6 mind find mean 34...re6 must be the reason energy in spades lop grace 35.Rxa7 and alf fall it is hope in railing us again hive mind in flurry it on the cards for white a spoonful of sugar field,
cain exactly it rookxa2+ king bin cinch 35.Kb3 clouded judge see ko in us wall ace greek 35...ra6 cough a lunge off incredible officer in fetch e6 chicken coop era white wins a piece staff in g7,
time trivial one together advantage state of mind dibble got one apostle in c3 aim creedence ogle five alive (rook aim dead) juice off manage,
36...Rxe6 re you in ecumen g7 time free in general stipulate again empty road in got rook globule,
bishop card it a golden I grain for heading some thod in carry it's pin ever tickle b7 e6 reticence aint it a lost footing the bill to gain us see farm rightoff incher pin spine 35.rf4 re7 bus pulls up it doctor in delve st I g7 bull in c3, f4 every it chink off team alight rookb7 and enter the centres
|May-03-13|| ||kevin86: This puzzle was a little 2 rough for me...better luck next week.|
|May-03-13|| ||Danzowich: Wonderful. Kasparov has a right to insist that this is a brilliancy.|
|May-03-13|| ||Jim Bartle: Sure he does. But does he have the right to be on the committee that evaluates it for a prize, or to lobby the other committee members?|
|May-03-13|| ||Jimfromprovidence: I got 34 Rb7 (threatening 35 e6 double-attacking the bishop along with a nasty mate threat.) |
We can see the clever mate threat after the text 36 e6.
click for larger view
Notice that black cannot exchange bishops, with 36
Bxc3?? because of 37 Rxf7+, with forced mate.
click for larger view
That why white had to play Rb7 before e6.
The best defense I found was 34...Re6, followed by 35 Rxa7 Rde8 36 Rc7 and white will be up two pawns.
click for larger view
|May-03-13|| ||BOSTER: When one piece (Nh7) has a bad position, all positon is bad. But you have to prove it.|
To swim without a target is useless.
So, I'd choose the target f7 pawn, moving rook on the seven 34.Rb7 with idea to play Rxg7 Kxg7 and push e6, if 34...Rxa2 Kb3, if 34...Re6 to "block" e6 pawn, white can play 35.Rf4.
|May-03-13|| ||morfishine: <Bartimaeus> Actually, after
34.Rb7 Re6, even better is simply <35.Rc7> and the c-pawn is lost|
|May-03-13|| ||fm avari viraf: Maybe I have seen this game before as I could find the answer so easily.|
|May-03-13|| ||Patriot: I'm not seeing it today and I don't have much time. I thought 34.Rxg7 Kxg7 35.e6+ but 35...Kf8 proves what? Maybe a quiet move is good enough, like 34.Kc1 threatening to double on the g-file. 34.Kc1 Bh8 35.Rg2 Ke7 36.Rg8 Rg6 37.R4xg6 fxg6 38.Rxg6 wins a pawn.|
|May-03-13|| ||morfishine: Hello <Bartimaeus> I meant to add that after 34.Rb7 Re6 the move <35.Rc7> looks very strong. The c-pawn falls with no compensation|
|May-03-13|| ||DarthStapler: I didn't get it|
|May-03-13|| ||James D Flynn: Material is equal but Blacks B and N are hemmed in by the pawn on e5, Whites R is stuck with the defense of the pawn on a2, but is that pawn so important?
34.Rb7 Rxa2+ 35.Kb3 Ra6 36.e6(now the point of Rb7 is clear White threatens Rxf7+ followed by Rgxg7 with a mating attack alsp e7+ winning a R and Rxg7 winning a piece and forcing the N on h7 to a suare that is under attack) Rxe6 (if Rb6+ 37.Rxb6 Bxc3 38.Rb7 Bg7 39.Rxf7+ Ke8 40.Rgxg7 Rxe6 41.Ne5 Nf6 42.Ng6 Nd7 43,Rxd7 Rxd7 44,Rxd7 Kxd7 45.Nf8+ Ke7 46,Nxe8 Kce6 and with K,B and 2 pawns against K and 3 pawns White has an easily won endgame,|
|May-04-13|| ||Abdel Irada: <Bartimaeus: Thanks <Abdel Irada>. btw, why the "infinity" symbol at the end ? new signature? :)>|
The lemniscate is a placeholder, intended to put some whitespace under the last line of my posts.
Credit where it's due: I got the idea from my old friend and adversary <Pinned Piece>, although he uses a period.
However, I'll admit that I'm also rather fond of the infinity symbol and have used it as a "trademark" in some other contexts (such as in the titles of pages on my site), so I suppose you *could* also think of it as a kind of signature.
(It occurs to me that this makes it a "dual-purpose" symbol, which will doubtless trigger an investigation to see if it can be used to manufacture WMDs.)
|May-04-13|| ||Bartimaeus: <morfishine> I do understand that after 34...Re6, either a-pawn or c-pawn is history and the endgame is not very favorable to black. The point was that its any day better than 34... Rxa2+ as a result of which Black immediately loses a piece and very soon the game. A better fight could have been put up with Re6 though Black would probably have lost eventually.|
|May-05-13|| ||morfishine: Hello <Bartimaeus>! On your comment:
<...The point was that its any day better than 34... Rxa2+ as a result of which Black immediately loses a piece and very soon the game. A better fight could have been put up with Re6 though Black would probably have lost eventually> I could not agree more|
< Earlier Kibitzing · PAGE 3 OF 3 ·
Kasparov on Kasparov: Part I
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