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Ulf Andersson vs John Nunn
Johannesburg (1981), Johannesburg RSA, Aug-??
English Opening: Anglo-Indian Defense. King's Indian Formation (A15)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Feb-14-05  Gowe: Nice finish by andersson. If 25.Rxf7 then 26.Rb8 winning. Great move.
Oct-20-05
Premium Chessgames Member
  Mateo: The turning point was 21... Ra5?. Better 21... Qa8! =.

23... d4 (instead of 23... Ra2) 24. Nd6 (threatening 25. Nf7) Qf6 25. Rd7 Ra3 26. Rbb7 Rd3 27. Rf7 Rf7 28. Rf7 .

Jan-28-07  notyetagm: <Gowe: Nice finish by andersson. If 25.Rxf7 then 26.Rb8 winning. Great move.>

Yes, 25 ♘xf7! takes advantage of the tactical point that the Black f8-rook must <BREAK THE ALIGNMENT> between the Black d8-queen and g8-king, else ♖b7-b8 <PINS> and wins the Black queen. Since the Black f8-rook must remain on the back rank to perform this defensive task, it cannot also <DEFEND> the Black f7-pawn.

<BREAKING AN ALIGNMENT IS A FULL-TIME JOB>. The Black f8-rook cannot <BREAK THE ALIGNMENT> between the Black d8-queen and g8-king -and- <DEFEND> the Black f7-pawn (25 ♘xf7!).

Nov-17-08  notyetagm: 25 ?


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25 ♘d6xf7! 1-0


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<Gowe: Nice finish by andersson. If 25.Rxf7 then 26.Rb8 winning. Great move.>

Yes, a very nice tactical shot by Andersson.

(VAR) 25 ... ♖f8x♘f7?? 26 ♖b7-b8 <pin>


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Feb-14-13
Premium Chessgames Member
  whiteshark: <DECOY: f7>
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