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Nov-26-09
 | | Patriot: This almost looks drawish but black is up a pawn so he should try to win. The obvious 76...Re3+ doesn't force white into a mating net and 76...Rg4+ would be nice if black's own bishop wasn't attacked. But 76...Re3+ would be mate if the d4-square was not available. So the candidate 76...Kc5 looked promising and calculation proves it: 76...Kc5
A) 77.Rxg5 Rxg5 is a technical win for black.
B) 77.Ke5 Rxd3 78.Rxg5 Rd5+ 79.Kf6/Kf4 Rxg5 80.Kxg5 and black wins the king and pawn endgame. I didn't consider 77.Ke5 Rxd3 78.Kxe6 as other's have pointed out but that seems to drop a piece for almost nothing. |
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Nov-26-09
 | | chrisowen: The link on this occassion is rook, king and bishop. Black is cooking up a storm as Kc5 harvests the point leaving Alexey sweatin. Re3 can reap it in and gives him a stuffing since white's future is grim: eat the dsb or let the lsb go. |
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Nov-26-09
 | | Fusilli: What a great game by Botvinnik! 19...Bh6! confidently sacs a pawn for piece play... and because the extra pawn for White on the Kingside means so little that White will return it some moves later. Then it's a show of skilled maneuvering with the bishop pair until he wins a pawn. And then he goes ahead to trade a few more pawns, even in the presence of opposite-color bishops. And the smooth final blow. Wow. |
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Nov-26-09
 | | JohnBoy: Having just spent half an hour considering the end of Reshevsky vs Smyslov, 1991 , the idea of a mating net was not far from my mind. Nice puzzle - subtle, but easy if one knows what to be looking for. |
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| Nov-26-09 | | Prelate: Hmmm- a nice end-game study. The white king appears safe enough, but closer examination reveals that he has only one flight square to prevent mate by white next move, namely d4. Black therefore must choke d4 - but how? No less than the mighty black monarch himself! 76.... kc5! And white must surrender his rook for black's bishop because every other move leads to 77.....Re3# The rest of the game is an easy win.
Time to check+..... |
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Nov-26-09
| | Fusilli: <Prelate> <And white must surrender his rook for black's bishop because every other move leads to 77.....Re3#> Not quite, but the alternative loses the pawn endgame: 77.Ke5 Rxd3 78.Rxg5 Rd5+ etc. |
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Nov-26-09
 | | Domdaniel: 76...Kc5! is both easy and hard to find, in my opinion. Easy, in a puzzle context with black to play: I found it quickly once I saw that the mating theme was the only realistic winning try. But it's quite hard to foresee it as white on the previous move - probably because it's a self-pin, and one tends to discount such moves. I suspect Suetin never saw it coming. |
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Nov-26-09
 | | David2009: 76...e5 threatening Re3 mate, Black can either resign or give up the exchange. It took me a little while to spot this. My first try was: 76...Rg4+ 77 Kf3 Rf4+ 78 Ke3! (or 81 Kg3 Rxa4 79 Rxg5 Ra3 wins the B with a winning RPP vs R ending)
78...Rf5+ 79 Ke2 (forced to save the R) Re5+ 80 Kd1 (or perhaps f1) Kd5 and the Black K makes ground: but not enough to
win.
====
Egg on my face. 76 ...e5 does NOT threaten mate since the White King escapes to f5. Ah well. "Nul points" to borrow the Eurovision phrase. |
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Nov-26-09
 | | OBIT: Interesting debate here on whether ...Kc5 is an easy or hard key move. In my case, I'd say once I found ...Kc5 it took me less than a minute to realize it won, but it took me awhile to find it. I considered several moves before I got around to this one, and I think this would be true of most players - this just isn't the type of move you'd consider first. So, I'd rate the key move for this puzzle as easy to analyze, not so easy to find. |
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| Nov-26-09 | | Prelate: True- I did briefly consider the possibilities after 77....ke5 But decided it wasn't worth white's effort to drag out the pawn ending! Still, I should analyse further in my posts...(for my penance I will study several more chess problems...:) |
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Nov-26-09
| | Fusilli: <OBIT> <So, I'd rate the key move for this puzzle as easy to analyze, not so easy to find.> I think what makes Kc5 difficult to find is its counterintuitive nature, in that Black self-pins his own Bishop. |
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Nov-26-09
 | | Once: <ComboKal> No, it wasn't obvious to me either! I went down an entirely different track... But when I saw the answer, I could instantly see why it was much better than my feeble effort. Hence, for me "obvious" - easy to see once (ahem!) you know the answer, but still managed to elude me. <Slaps forehead and exclaims "doh!"> |
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Nov-26-09
| | Domdaniel: My point about the puzzle context was simply that there are no other real 'tries' in the position. No other tactical tricks - the bishops are on opposite colours, the enemy rook can't be attacked, etc. There's no easy way to force exchanges into a won ending. But there *is* a possible mate threat, and ...Kc5 jumps out as the way to make it work. This is much harder to find after 75 moves of a tough OTB game, with no guarantee that a win exists. Making it a puzzle changes everything. |
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| Nov-26-09 | | WhiteRook48: I had 76...b5... trying for a mating attack with self-block |
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| Nov-26-09 | | tivrfoa: why the turkey in the <chessgame logo>. great game by the way. |
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Nov-26-09
| | OBIT: <tivrfoa>It's Thanksgiving, aka Turkey Day, in the U.S. We see you're from Brazil, so we'll let it go. :) |
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| Nov-26-09 | | ComboKal: <Once> re: <Slaps forehead and exclaims "doh!"> That is my forte! I do it at least once per game. |
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Nov-26-09
 | | johnlspouge: Thursday (Medium):
Suetin vs Botvinnik, 1952 (76...?) Black to play and win.
Material: Up a P, in an endgame with Bs of opposite color. The White Ke4 has 1 legal move, d4, suggesting an attack on Ke4, by advancing the passer Pe6. Candidates (76...): Re3+, Rg4+, e5, Bd2, Kc5
[76...Re3+ 77.Kd4 e5+ 78.Kc4 goes nowhere]
[76...Rg4+ 77.Kf3 Rxa4 78.Rxg5 Ra3 loses to 79.Ke2]
[76...e5 77.B any goes nowhere]
[76...Bd2 goes nowhere]
76...Kc5 (threatening 77...Re3#)
White must drop Rh5 or Bd3 to avoid mate!
I do not mind admitting I found the move extraordinarily hard to find. Fortunately, process of elimination works very well when you have no clock. |
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| Nov-26-09 | | turbo231: Great puzzle so simple, of coarse I missed the King move. |
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| Nov-26-09 | | A Karpov Fan: got it |
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| Nov-26-09 | | njchess: Nice solution from Botvinnik. |
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Nov-26-09
 | | whiteshark: Relatively easy, there were no 'big' alternatives. |
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| Nov-28-09 | | Eduardo Leon: <The Long Diagonal>, I wouldn't call that being a jackass. You just didn't see something. |
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| Mar-02-12 | | screwdriver: I was wondering how Botvinik was going to win this once I saw he was only up a pawn with bishops of opposite colors and a rook. Grabbing the mate net idea, sure did come in handy. I guess, the pawn on e6 made it possible in this unique situation. |
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| Mar-15-12 | | HOTDOG: 75.Kd4! e5+ (or 75...Re3 76.Rh6) 76.Ke4 Re3+ 77.Kf5 Kd5 78.Bc4+ = (Botvinnik) |
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