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James Tarjan vs Julian M Hodgson
Manchester (1983)
Polish Defense: General (A40)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Mar-22-13  Marmot PFL: A player of Hodgson's strength would know he has to play 8...h6 before castling here (although good attackers are not always good defenders).
Mar-22-13  Marmot PFL: 8...Nc6 is probably better, there is no urgent need to castle here anyway.
Mar-22-13  John Abraham: Finding the initial move (10. Bxh7) is not difficult and should be apparent to even a novice who is familiar with elementary mating tactics, but the challenge is accurately assessing the position and finding the appropriate continuation after 11...Kg6
Mar-22-13
Premium Chessgames Member
  ZZpatzer: Crafty thinks 11...Kg8 is better than the move played. Endgame trainer link: http://www.chessvideos.tv/endgame-t...
Mar-22-13  snakebyt: ...Kf6 to get out of check is a move that I hadn't considered. Anyhow, I felt that I had to check him right away because of his Blk's B/Q impending attack on f2pawn. So I went with Bxh7+ KxB then either Ng5+ or Qc2+.
Mar-22-13
Premium Chessgames Member
  chrisowen: <Ezzy> Coming hack to you in chow it down a menu,

better bind result a narrow in aim barking mood is,

entry in light has tell a bequeath in fly it dog in alma,

dig who offers his key to baby gone on g5 in aim,

duty to knight read in dips ed for nabbing get, go

at hive mind it peg in balustrade 10.Bxh7+ be to

knight in g5 etc wrong-call 10...kh8 at enacingh7!

Mar-22-13  Marmot PFL: <Finding the initial move (10. Bxh7) is not difficult and should be apparent to even a novice who is familiar with elementary mating tactics, but the challenge is accurately assessing the position and finding the appropriate continuation after 11...Kg6>

This is true, and many times 13 Qh4 will not work, if Rh8 is playable for instance. This problem is easier since 13 Qh4 does work, otherwise 13 Qg3 would be forced, which still seems to win with threats like Nxe6+ or Nf3-h4+.

Mar-22-13  Marmot PFL: For a thorough discussion of Bxh7+ see Art of Attack in Chess by Vukovic, pp. 121-141.
Mar-22-13  BOSTER: <apexin> <12.h4 f5>. Black can play 12...Rh8 and white should be very bold to play 13.g4.
Mar-22-13  arp001: The greek gift :)
Mar-22-13
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 10... Nf4 followed eventually with Ng6, reinforcing the defense of the castle.

White probably should take advantage of the momentarily undefended black castle with the classical sacrifice 10.Bxh7+ Kxh7 (else drop an important pawn) 11.Ng5+:

A) 11... Kh8 12.Qh5+ Kg8 13.Qh7#.

B) 11... Kg8 12.Qh5 Rc8 (12... Re8 13.Qxf7+ Kh8 14.Qxe8#; 12... Rd8 13.Qxf7+ Kh8 14.Qh5+ Kg8 15.Qh7+ Kf8 16.Qh8+ Ke7 17.Qxg7+ Ke8 18.Qf7#) 13.Qxf7+ Kh8 14.Qg6 Kg8 15.Ne4 and the threat 16.Nf6+ seems impossible to stop (16... Be7 and 16... Qd8 allow mate in two and four respectively).

C) 11... Kh6 12.Qg4

C.1) 12... g6 13.Qh4+ Kg7 14.Qh7#.

C.2) 12... Rh8 13.Qh4+ Kg6 14.Qxh8 Kxg5 15.Qxg7+ Kf5 (15... Kf4 16.Nc4+ and 17.Nxb6; 15... Kh4(5) 16.Nf3 and mate soon) 16.g4+ Kf4 17.Nc4+, etc.

C.3) 12... Ne3 13.Qh4+ (13.fxe3 Bxe3+ 14.Kh1 Bxg5) 13... Kg6 14.Qh7+ Kxg5 15.f4+ Kg4 16.Qh3#.

D) 11... Kg6 12.Qg4

D.1) 12... f5 13.Qh4 Nf6 (13... Rh8 14.Qxh8 Kxg5 15.Qxg7+ and mate soon) 14.exf6 with a winning attack.

D.2) 12... f6 13.Qe4+ f5 (13... Kxg5 14.Nc4+, etc.) 14.Qh4 transposes to D.1.

D.3) 12... Ne3 13.fxe3 Bxe3+ 14.Kh1 Bxg5 15.Nf3 f6 16.Nxg5 with a winning attack (16... fxg5 17.Qxg5+ Kh7 18.Rxf8).

Mar-22-13
Premium Chessgames Member
  GoldenKnight: I saw this immediately all the way to White's 12th move, and knew it was a won game after that.
Mar-22-13  M.Hassan: <PizzatheHut:<M.Hassan>, 13...Be7 allows a forced mate with 14.Qh7+ Kxg5 15.Ne4+ Kg4 16.Qh3#.>

Sure, that's what my anlysis shows. I questioned 13...Be7 as against 13...Nf6. They are both futal but the latter is readily taken by 14.exf6 and is a weak defense of h7 square.

Mar-22-13
Premium Chessgames Member
  Mess With Da King: As is so often the case towards the end of the week, there is an obvious candidate (Bxh7), but working through all the variations OTB would be far from trivial. Interestingly one of the strongest players here, Abdel Irada, seems to agree - precisely because he is so good at analysing the variations in a position (yes Abdel, lots of us do read and appreciate your many excellent posts). It reminds me of the 25th move yesterday in Svidler-Carlsen, where Magnus had the opportunity to play Bxh3 (not strictly a Greek Gift, but very similar). He said after the game he didn't even consider this move since he was looking for something to consolidate his already strong position. Whereas most of us patzers would probably have taken the chance and struggled against best defence (which would have involved declining the sac).
Mar-22-13
Premium Chessgames Member
  playground player: I didn't even know there was a Polish Defense, doubtless inspired by the Polish Opening for White, 1.b4. Looks like it would be fun to learn.
Mar-22-13
Premium Chessgames Member
  Shams: <playground player> If you hate playing against the KIA you might kick the tires on <1.Nf3 Nf6 2.g3 b5!?> which has been played by some pretty strong players.

I Bilek vs Tal, 1967
Korchnoi vs Karpov, 1973

And the most recent game in the db in this line, an instructive GM vs. Expert pairing: R Robinson vs T Gelashvili, 2011

User <keypusher> on the Korchnoi - Karpov game page: <I remember reading Karpov's annotations of this game long ago -- he wrote something like "after 2...b5, Korchnoi gave me an angry look, and it became clear I could not avoid a real battle. Nevertheless I think it is a sound move.">

Mar-22-13
Premium Chessgames Member
  Patriot: This looks like the classic bishop sacrifice (10.Bxh7+ Kxh7 11.Ng5+ Kg6 12.Qg4). I only wonder if a timely Nc4 is best but not sure if it makes sense. For example, 10.Bxh7+ Kxh7 11.Ng5+ Kg6 12.Nc4 bxc4 13.Qc2+ f5 14.exf6+ Kxf6.

I'm out of time.

Mar-22-13
Premium Chessgames Member
  Isolani: <This looks like the classic bishop sacrifice (10.Bxh7+ Kxh7 11.Ng5+ Kg6 12.Qg4). I only wonder if a timely Nc4 is best but not sure if it makes sense. For example, 10.Bxh7+ Kxh7 11.Ng5+ Kg6 12.Nc4 bxc4 13.Qc2+ f5 14.exf6+ Kxf6.>

Earlier today while looking at this on my BlackBerry I too was thinking of the Nc4!? move as early as move 10. This creates a tempo by moving an obstructive piece, opens the black square B diagonal and protects the g5 on g5 all at once.

10.Nc4!? bxc4 (or some other Q move) 11.Bxh7+ Kxh7 12.Ng5+ Kg6 13.Qd3+ f5 14.Qh3 with mate to follow. Try to refute this.

Mar-22-13
Premium Chessgames Member
  Isolani: ^Actually I forgot about the the black c4 pawn (oops), however there is 13.Qc2+...I do not know right now but there seems to be something forceful here.
Mar-22-13
Premium Chessgames Member
  Jambow: Greek gift no doubt, I was like really this is a blitz hack attack. Oh well I'll just pretend I'm getting that much better. ;0]
Mar-22-13  bischopper: it is clear sacrificy of bischop...
Mar-22-13  Conrad93: This puzzle is a bit overrated...

Black's moves are just desperate attempts at halting mate.

Mar-22-13  Conrad93: Plus, 10. Bxh7 is too apparent. I was expecting 10...Kh8.
Mar-23-13  Abdel Irada: Ah. *Now* I see why 12. ...Bxf2† followed by 13. ...Ne3 doesn't work: The bishop on c1 isn't a necessary participant in the attack.

After, e.g., 13. Rxf2, Ne3 14. Qh4, f4 (or 14. ...Nf5), White can blast through with 15. Qh7†, Kxg5 16. Ne4†, Kg4 17. Qh3#.

Meanwhile, I think various kibitzers (including me) have adequately disposed of the alternative 11. ...Kg8, so Black is definitively crushed.

Chalk one up for a fresh look at the problem.

Mar-23-13
Premium Chessgames Member
  Patriot: <Isolani> The line we both examined loses, although it was a good line to consider at first. But it just seemed to go to a dead end.
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