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| Apr-14-09 | | perhaps: Ah! got it! (why not 77 a7=Q) |
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| Apr-14-09 | | xiko9: 77 a8=Q would give the win for white instead of Kg1 avoiding 77...Ra1#...it seems a blitz game so this error is common... |
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| Apr-14-09 | | Woody Wood Pusher: I love it. |
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| Apr-14-09 | | JeffCaruso: <xiko9: 77 a8=Q would give the win for white instead of Kg1> No, 77 a8♕ ♖a1+! 78 ♕xa1 is still a stalemate. |
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| Apr-14-09 | | kevin86: A better,and easier trap than yesterday-there even was a similar theme one move earlier: 77 a8=♕ ♖a1+ 78 ♖g1 ♖xa8 or 78 ♕xa1 stalemate |
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| Apr-14-09 | | SuperPatzer77: <JeffCaruso> You're right. 77. a8=Q Ra1+!, 78. Qxa1 = (Stalemate). 77...Ra1+! 78. Rg1 Rxa8, 79. f6 Rf8, 80. Rg6 Rf7, 81. Kg1 Rg7! (pinning the White Rook and forcing stalemate) 81. fxg7 (or Rxg7) = (Stalemate). Instead of 81. Kg1, 81. Rh6 Kg4! (attacking White f-pawn to force a draw) SuperPatzer77 |
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Apr-14-09
 | | playground player: I hate draws... unless I get one against somebody who's a lot better than me, and he's beating me badly, and then I pull off a whole series of fantastically brilliant moves to force a draw. Then it's all right. |
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| Apr-14-09 | | TheaN: Tuesday 14 April 2009
After some absence I'm back: this one took me longer than I should on these puzzles. Target: 1:15
Taken: 0:53
Par: yes
<77....?>
Material: +/♙\ w: ♖ + 2♙ b: ♖ + ♙ (ENDGAME)
Candidates: Rxa7, <[Rg2†]> -ML-
Black to draw, in a seemingly lost position. Taking on a7 might make it possible for Black to draw, but due the peculiar position of his King he probably won't. No, if he wants to draw, he should do so immediately. <77....Rg2†> moving the King loses Rg8, obviously. The next move draws the game... <78.Rxg2 1/2> ...due to immediate stalemate. |
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| Apr-14-09 | | agb2002: White is a pawn ahead and threatens 78.a8=Q Ra1+ 79.Kf2 winning. The obvious move is 77... Rg2+ forcing 78.Rxg2 and the black king cannot move. I've considered 77... Rxa7 trying to find a way of forking the white king and the pawn since after ... Ra1+ Kf2 they lie on the same file but even in that case White would draw the endgame. |
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| Apr-14-09 | | WhiteRook48: found 77...Rg2+ easy. Got it in 5 seconds. Wait- no - 4.97834501948501348501 seconds |
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Apr-14-09
 | | Jimfromprovidence: I think white blew the win with 71 Kg2 instead of 71 Kf2 below.
click for larger viewIn order to win, white has to advance his a pawn to the 7th rank and then slide the rook over to check the black king and promote his pawn. Black needs his king to hide behind white’s f pawn or his own h pawn. With 71 Kg2, white boxes his king in the corner and has to fight off a mate threat. With 71 Kf2, he has options. If black follows 71 Kf2 with 71...Kg4, then white plays 72 a7. If black follows with 72…Ra2+, white chases the rook down beginning with 73 Kd4. 
click for larger viewIf black follows 71 Kf2 with 71...Ke4, then white again plays 72 a7. If black follows with 72…Ra2+, white can hide his king from checks beginning with 73 Kg3. 
click for larger viewIf black follows 71 Kf2 with 71...Kxf4, then after 72 a7 he cannot prevent the rook check and the pawn promotion. His king has nowhere to hide. 
click for larger view |
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| Apr-14-09 | | TheChessGuy: I guess it's draw week. |
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| Apr-14-09 | | Once: Ah, yes. Another stalemate trap. This shows the amazing drawing qualities of the h pawn. Here's another example:
click for larger viewWhether it is white or black to play, this is still a draw. With black to play, the white king shuttles up and down the f file and black cannot get away from the path of his pawn. With white to play, he stays close to the h1 square where he cannot be evicted. 1. Kf2 Kg4 2. Kg2 h3+
3. Kh1 Kg3 4. Kg1 h2+ 5. Kh1
click for larger viewEndgames can be sexy too. |
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| Apr-14-09 | | sfm: <MaczynskiPratten: I did look at Rxa7 but it is certainly not an easy draw, White can create awkward threats with the f pawn due to the imprisoned position of the Black king. For example..>
I add 40 to your numbers:
"78 f6 (plan Rg7) Rf7 79 Rg6 seems to force the Black Rook to shuttle from f7 to f8..."
No shuttle! 79.-,Rg7! Damned stalemate! :-)
77.-,Rxa7 is indeed an easy draw. There's no way to promote the f-pawn without bringing the king there. If so, black has his own pawn to push. |
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| Apr-14-09 | | SuperPatzer77: 77...Ra1+! 78. Rg1 Rxa8, 79. f6 Rf8, 80. Rg6 Rf7, 81. Kg1 Rg7! (pinning the White Rook and forcing stalemate) 81. fxg7 (or Rxg7) = (Stalemate). Instead of 81. Kg1, 81. Rh6 Kg4! (attacking White f-pawn to force a draw) Instead of 79. f6, White's interesting try is 79. Rg5!? below: 79...Ra1+!, 80. Rg1 Ra6!, 81. Rg6 Ra1+!, 82. Rg1 Ra6 (again), 83. Rg5 Rf6! 84. Kg1 Rg6! = (forcing stalemate). SuperPatzer77 |
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| Apr-14-09 | | Aurora: No big challenge today. |
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| Apr-14-09 | | xiko9: yes I have noticed that then...easy puzzle... |
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| Apr-14-09 | | njchess: The theme of this week looks to be stalemates. Yesterday's puzzle was hilarious with Black repeatedly checking for a stalemate. Today's puzzle might be even easier since 77. ... Rg2+ or Rxa7 both lead to a stalemate (though Rg2+ is more efficient). 77. ... Rxa7 78. f6 Rf7 79. Rg6 Rg7! leads to stalemate as well. |
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| Apr-14-09 | | SuperPatzer77: <njchess: The theme of this week looks to be stalemates. Yesterday's puzzle was hilarious with Black repeatedly checking for a stalemate. Today's puzzle might be even easier since 77. ... Rg2+ or Rxa7 both lead to a stalemate (though Rg2+ is more efficient). 77. ... Rxa7 78. f6 Rf7 79. Rg6 Rg7! leads to stalemate as well.> <njchess> 77...Rxa7 78. Kf2 Rf7, 79. Rg5 - still unclear - because there is no stalemate threats. <njchess> I'd rather have 77...Rg2+! than 77...Rxa7 because it leads to a quick draw by staleamte. It is like a shortcut to a draw. Instead of 77. Kg1, 77. a8=Q Ra1+!, 78. Rg1 (forced - 78. Qxa1 - stalemate) Rxa8, 79. Rg5 Ra1+!, 80. Rg1 Ra6!, 81. Rg6 Ra1+! (again), 82. Rg1 Ra6 (again), 83. Rg5 Rf6!, 84. Kg1 Rg6! leads to a stalemate - Just note that White King is still on the h1 corner square and unable to move to g1 because of stalemate threats. SuperPatzer77 |
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| Apr-14-09 | | njchess: <uperPatzer77 77...Rxa7 78. Kf2 Rf7, 79. Rg5 - still unclear - because there is no stalemate threats.> It's not unclear. A stalemate will occur as long as Black's king is trapped on the h-file and Black plays reasonably accurately (e.g. 77. ... Rxa7 78. Kf2 Rf7 79. Rg5 Rf8 80. Kf3 Kh2 81. Kf4 h3 82. Rg7 Kh1 83. Kg3 h2 84. Ra7 Rg8+ 85. Kh3 Rg1 86. Ra2 Rg2 87. Rxg2 stalemate) 77. ... Rg2+ saves playing out a laboring draw. |
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| Apr-15-09 | | tivrfoa: why white played 77. Kg1 instead of a8=Q? |
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| Apr-15-09 | | nuwanda: <SuperPatzer77:...<njchess> 77...Rxa7 78. Kf2 Rf7, 79. Rg5 - still unclear - because there is no stalemate threats. <njchess> I'd rather have 77...Rg2+! than 77...Rxa7 because it leads to a quick draw by staleamte. It is like a shortcut to a draw> If all you want is a draw, you're right. But playing on is never a one-sided-affair, who knows. After 77...Rxa7 i dont consider the black position any bader than whites. Some players prefer "unclear" to an immediate draw... |
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| Oct-26-09 | | WhiteRook48: 77 a8=Q looks too obvious and there was still stalemate..
after 77...Ra1+ 78 Rg1 Rxa8- the 2 pawns are balanced |
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| Dec-18-09 | | WhiteRook48: you don't want to let your guard down |
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| Oct-08-22 | | whiteshark: GM Daniel ♔ examines the game: https://youtu.be/2xYKaCtqAeY?t=127 (~10m) Enjoy! |
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