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John Nunn vs Sutton
Peterborough (1984)
French Defense: Steinitz. Boleslavsky Variation (C11)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 28.Qxh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Aug-31-05  Koster: Easy since black has no counter threats. Games like this give the French a bad reputation.
Aug-31-05  RookFile: Where I come from, we don't make moves like 9... Nb8.
Aug-31-05  zb2cr: Saw this after about 3 minutes of thought, a good one. Initially I thought of 28. Qxh7+, because of the Anastasia's mate-like pattern, but rapidly dismissed dismissed it because Black had the flight square on g7. Then I looked at 28. exf6, but saw the defenses mentioned by others. Eventually I hit on the idea of combining the two!
Aug-31-05
Premium Chessgames Member
  keypusher: Wonderful combination by Nunn!

There ouught to be a good Willie Sutton joke about this, but I can't think of it.

<The problem ought really to have been set at the move before Nunn put forward the poisoned Bishop - since that is the real combination here.>

Agree with you but then it wouldn't be a Wednesday puzzle!

Aug-31-05  Nicholson: This would have been more fun if we'd been asked to find white's move at 27.
Aug-31-05
Premium Chessgames Member
  YouRang: I reversed things: I tried 28 exf6 in anticipation of Qxh6 followed by Rh3#.

The trick here (at least for me) was to realize that 28. Qxh6 can be played first, which is more forcing since the rook mate cannot be avoided. (It can be delayed with a couple of checks, but that's it.)

Aug-31-05  GreenCastle: <latebishop 29...♗xg2+ 30.♔xg2 ♕d5+ if A) 31 ♖xd5 ♗lack has 31...♖e8 32.♖d3 ♖xe7 and the ♗lack king can escape, albeit a rook down with a completely lost position! if ♗) 31 ♔g1 then 31...♕c5+ 32.♔h1/g2 ♕d5+ or 32.♔f1 ♕c4 33.♔e1 ♕e4+ etc> What about C) 31.♘xd5 g5 32.♘e7 g4 33.h3 and it's not clear how Black stops ♖h1 followed by hxg4 mate!
Aug-31-05
Premium Chessgames Member
  NakoSonorense: hey <jahhaj>, great link. Thanks for providing it!
Aug-31-05
Premium Chessgames Member
  patzer2: Today's puzzle solution 28. Qxh7+! and the followup 29. exf6! leave Black with nothing but a helpless waiting move in the face of the coming Rh3#.

Aug-31-05  chessic eric: Anytime I see a game played by GM Nunn in these puzzles the first thing I do is look to see if Qxh7 is possible, and if so what it accomplishes. This is the third puzzle in as many months where GM Nunn shatters the enemy king's pawn shield with his queen and obtains a point. Does anyone have a collection of winning queen sacrifices, and if so, how many times does Nunn appear?

Its amazing how integral Nunn's 17.Kh1 is to the game's overall strategy. Nunn's knight and rook play against the black queen in the center and on the queenside would not have been nearly as successful with the king on g1. The king on g1 is vulnerable to many checks by the black queen, and while these are not too dangerous, 23.Nxd5 is not possible with the king on g1 instead of h1. Not only does 17.Kh1 strengthen white's position, it also forces black to decide how he will continue to develop his game without revealing all of Nunn's plans. While Kasparov has made a career out of such seemingly quiet, middlegame king manuevers, Nunn also deserves credit for showing their remarkable strength in many of his games as well.

Aug-31-05  cjbarclay: Could I make a suggestion for a slight improvement to an already great site? It would be really useful if there was a FEN code included for the problem of the day. The diagram on the homepage is a bit small for my liking (by necessity, I know), and going to the game page makes it hard not to see the solution first. It would be great if there was something which people could just copy and paste into the game viewer of their choice.
Aug-31-05
Premium Chessgames Member
  kevin86: Anasthasia's mate:as beautiful as the name!! White's is on the way-with no way to stop it.
Aug-31-05  snowie1: What was that old saw about moving a piece more than..in the opening??? Move 9 found black's K-N at b8, and after moving it 6 times, found a post for it...from whence it was taken, with a move!
Aug-31-05  VinnyRoo2002: Can black hold this position on 27...h5?
Aug-31-05  I Pawn You: Rather easy for a wed. I enjoyed though, was nice.

Aug-31-05  chessic eric: <VinnyRoo2002> I think its too late for black even if he plays 27...,h5; the same tactical shot rips open the kingside pawns and instead of the white pawn controlling g7, the black bishop prevents the black king's flight. 28.Qxh5+!,gxh5
29.Rh3!,...
30.Rxh5#

There are certain sacrifices black can make with his 29th move to prolong things, but all of them lose material and end in a winning endgame for white.

Aug-31-05  jahhaj: <VinnyRoo2002> No, although I needed a computer to see the winning moves. One of the main problems with h5 is that is suddenly makes the move ♘xf5 possible in many variations.

Best is 28.♕h4 simply infiltrating on the dark squares. Now various Black tries are possible but they all fail, here's a few sample lines.

a) 28...♖ae8 (a do nothing move) 29.♗xg7+ ♔xg7 30.♘xf5+ ♔h7 31.♕g5

b) 28...♗xf6 29.♕xf6 ♔h7 30.♘xf5

c) 28...♖g8 29.♘xf5

d) 28...♗e4 (protects f5) 29.♕g5 ♔h7 30.♗xg7 ♔xg7 31.♖d6 and Black can do nothing about a breakthough on g6.

c) is Black's best option but it's still clearly lost.

Aug-31-05  jahhaj: <chessic eric> Doesn't work, 28.♕xh5 gxh5 29.♖h3 ♗xf6 30.exf6 ♗xg2+ 31.♔xg2 ♖g8+ 32.♔h1 ♖g7 saves Black.
Aug-31-05
Premium Chessgames Member
  crafty: 28. exf6 h5 29.♕xh5+ gxh5 30.♖h3 ♗xg2+ 31. ♔xg2 ♖g8+ 32. ♔h1 ♖g7 33. fxg7+ ♔xg7 34. ♖xh5   (eval -1.65; depth 16 ply; 500M nodes)
Aug-31-05  tolow4y: is it me or did black make a serious mistake by letting the Queen sit on the h file since move 12.Qh5. If i was black i wouldn't have attacked the queenside, i would have ransacked the queen off that h file, and shut down the a diagnal.
Aug-31-05  SneechLatke: <aw: Wait a second, are you Keith Lalos?> Huh? Were you talking to me? I'm confused.
Aug-31-05  ThomYorke: <YouRang> If you antecipate 28)exf6 than h5 avoid de mate.
Dec-11-05  AlexanderMorphy: great game, sadly i missed this puzzle as i wasn't a member yet...from what move were we supposed to calculate the puzzle?
Jan-02-06  TerminalK: 16. a3 seems stronger
Mar-20-07  Rubenus: <TerminalK> Why?
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