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John Nunn vs John Anthony Sutton
Peterborough (1984), Peterborough ENG
French Defense: Steinitz. Boleslavsky Variation (C11)  ·  1-0

ANALYSIS [x]

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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 4 ·  Later Kibitzing>
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
Premium Chessgames Member
  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
Premium Chessgames Member
  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  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?
Jul-08-18  Nosnibor: The player of the black pieces in this game was Anthony J.Sutton .He was a strong player from Huntingdonshire and passed away some years ago.
Jul-08-18
Premium Chessgames Member
  MissScarlett: And the reason you can't submit a correction is what?
Jun-16-20
Premium Chessgames Member
  Predrag3141: Nice and easy puzzle today!
Jun-16-20  Cheapo by the Dozen: I made the same mistake <patzer2> did oh so many years ago, and overlooked that Black has a sequence that DOES avoid imminent mate, at the cost of a fatal material disadvantage.

I'll count that as a solution anyway. I love Tuesdays!

Jun-16-20
Premium Chessgames Member
  agb2002: White has a knight for the bishop pair and a pawn.

Black threatens Bxe7.

After 28.Qxh7+ Kxh7 29.exf6 the black king is in a mating net and 29... Bxg2+ 30.Kxg2 Qd5+ 31.Rxd5 leaves Black a piece down.

However, a preferable alternative is 28.exf6 h5 (due to 29.Qxh7+) 29.Qxh5+ gxh5 30.Rh3 and mate in three.

Jun-16-20
Premium Chessgames Member
  agb2002: I overlooked 30... Bxg2+ 31.Kxg2 Rg8+ which wins for Black. Puzzle solving before coffee is not a good idea.
Jun-16-20  mel gibson: A little bit tricky because Black had threats.

Stockfish 11 says:

28. Qxh7+

(28. Qxh7+ (♕h3xh7+ ♔h8xh7 e5xf6 ♗c6xg2+ ♔h1xg2 ♕a5-d5+ ♖d3xd5 ♖f8-e8 ♖d1-d3 ♖e8xe7 ♖d3-h3+ ♔h7-g8 f6xe7 ♖a8-e8 ♖d5-d8 f7-f6 ♖h3-h8+ ♔g8-g7 ♖h8-h7+ ♔g7xh7 ♖d8xe8 g6-g5 ♖e8-f8 g5xf4 e7-e8♕ f4-f3+ ♔g2xf3 a6-a5 ♖f8-h8+ ♔h7-g7 ♕e8-g8+) +M16/72 74)

mate in 16.

Jun-16-20  saturn2: 28. Qxh7+ Kxh7 29. exf6 and mate to follow

unless ...Bxg2+ 30. Kxg2. Qd2 or Qd5. But then white has a knight more. To avoid mate black has to give another rook.

Jun-16-20  Brenin: My first reaction was that this was a Monday Q sac, a day late, before realising that g7 wasn't covered, and that exf6 needed to follow before the R could do its worst. It's interesting that the Stockfish analysis accompanying the game gives 25 Rfd3 a question mark, yet the alternative line suggested (Ra3) looks much weaker than the game continuation. A too-short search?
Jun-16-20  Nullifidian: 28. ♕xh7+ ♔xh7 29. ♙exf6 Δ ♖h3#. A good example of Anastasia's Mate. The only way black can prevent immediate mate is to start throwing pieces in white's way with 29... ♗xg2+ 30. ♔xg2 ♕d5+ when either the knight or the rook will have to capture on d5 and give the black king a much needed tempo. But the material disadvantage that will result is clearly winning for white.
Jun-16-20
Premium Chessgames Member
  malt: 28.Q:h7+

(28.ef6 h5 )

28...K:h7 29.ef6 B:g2+ 30.K:g2 Qd5+
31.R:d5 Kh6 32.R5d3 Kh5 33.Rh3+ Kg4 34.Nd5 g5 35.Rh7 gf4 36.Kf2 and 37.Rg1#

Jun-16-20  saturn2: 28 exf6 should still win 28...h5 (forced as said by agb2002) and now 29 Rg3
Jun-16-20
Premium Chessgames Member
  chrisowen: Whipoak revinja qh7jaff honkjav revinja kh7jaff honkjav revinja junks it finishoff 29.exf6 vestjav kontjav revinja 7 honkjav whipoak revinja jengafu its mindwin feltvir hoodpig revinja velihac gackcov bayzits winvija vestjaf feltrak hogspad revinja gackbox zittyin qh7jaff honkjav;

revinja vetjaff totaddy dontjav faceons dontjav ignoble jivijav whipoak revinja qh7jaff honkjav?

Jun-16-20  Caissalove: I'm annoyed with myself because I couldn't see it. Sure I saw 28. Qxh7+ but could only then think of 29.Rh3.+ which obviously doesn't work.
Jun-16-20  TheaN: On this Tuesday the answer is relatively easy, <28.Qxh7+ Kxh7 29.exf6> is forced and now the threat of Rh3# seems unpreventable, but an interesting side question is how to finish up after <29....Bxg2+ 30.Kxg2 (Kg1 Qb6+ 31.Kxg2 (Rd4 Qxd4+ -+) Qxf6 -+) Qd5+!>


click for larger view

This interesting defensive sequence forces White to deflect one of his pieces that are forming the mating net. I felt that the sequence <32.Rxd5 Kh6 33.R5d3 Kh5 34.Rh3+ Kg4> gave Black a bit too many options, but this is in fact #9 after <35.Nd5! #9>.

I opted for <32.Nxd5?!<>> still threatening Rh3+ with Ne7# and thought Black was forced to give up a rook on e7, but missed the relatively simple <32....g5 (Rae8 33.Rh3+ Kg8 34.Ne7+ Rxe7 35.fxe7 +-) 33.fxg5 (Ne7 g4) Kg6 34.h4 +8)<>> and even though White is winning, in hindsight forcing the Black king down the board is better.

I'd say both solutions count though, as solving a #12 after a winning combination is not Tuesday material.

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