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Arthur Bisguier vs Andrew Karklins
70th US Open (1969), Lincoln, NE USA, rd 4, Aug-13
Indian Game: Anti-Nimzo-Indian (E10)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Jun-21-10
Premium Chessgames Member
  FSR: Weird tactic - I never saw a Bxh7+ sac like this one before.
Jun-21-10  ounos: Black was surprized too. 17. ...Kg7 loses quickly, much better is 17. ...Qh6 18. Qxf7+ Qg7, and White must work hard to win the pawn up rook endgame.
Aug-03-15
Premium Chessgames Member
  wayneduhpatzer: At first I thought that instead of White regaining the exchange on move 16 – which brings Black’s Queen to f8 thus enabling him to use it in his defense – that White could’ve won quickly by 16 Qh5+ Kg7 17 Rxf1, reaching this position:


click for larger view

And now I had thought mate followed swiftly no matter how Black might reply, e.g. 17..Qxd7 (when White plays *not* 18 Rf3? Rg8 with Black winning, but rather 18 Qg4+ Kh7 and *now* 19 Rf3) or 17..Rh8 (again losing to 18 Qg4+ Kh7 19 Rf3). But then I found that Black could play the super-precise 17..Rg8! and now White MUST take a perpetual: for if now 18 Rf3? then ..Qxd7 transposes to the position winning for Black just mentioned; and on 18 Ne5? Black unravels easily after ..fxe5 19 fxe5 Qe7.

If my brief analysis establishes that White was in fact forced to insert 16 Nxf8+ Qxf8 before continuing, then in the final position after 22 Qxf6 here’s my question: after ..Qxc3 isn’t Black still in the game? I haven’t found a clear-cut winning line for White; for ex. after 23 dxe5 Qxe5, or after 23 Qh6+ Ke7 24 f6+ Ke6, Black seems ok. Was Black’s position really resignable? I don’t use engines to analyze positions for me so maybe someone can post some engine analysis that reveals what I’ve missed.

If I do find that I’ve missed something strong for White, then if I have time I’ll post a question I have regarding how Black might’ve defended better by playing something other than 18..Qa3; but I’d rather have this question answered first.

Dec-17-18  AmanAgarwal: 15.Nxf6+!! was an awesome move. After 15..gxf6 16.Qh5+ Kg8 17.Bh4 Bd3 18.Qh6 Bg6 19.Re1 Re8 20.Re3 Qe7 21.Rh3 Qf8 22.Qh8+! A very very powerful move.

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