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Tigran V Petrosian vs Svetozar Gligoric
URS-YUG (1973), Tbilisi GEO, rd 2, Nov-??
King's Indian Defense: Saemisch Variation. Normal Defense (E81)  ·  1-0



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Kibitzer's Corner
Aug-05-07  patzerboy: 40...Rd6 fails to 42.Rxf4+ exf4 43.Qe5+ followed by Rd1.

If 40...g5 (to forestall Rxf4+), then simply 41.Rc4 and the c-pawn falls.

The main immediate threats are Rc4 and Rxf4+. Black is bound to lose material either way.

Aug-05-07  patzerboy: 40...Rb4 seems to be better, but...hmmm...
Aug-07-07  patzerboy: OK. I think if 40...Rb4, then 41.Rc4 anyway.
Aug-07-07  Neil Ferde: if 44. Rd1, then Rxd1+
Aug-10-07  patzerboy: Duh! You're right!

OK. How about

43.Qe5+ Kf2 (forced)
44.Qe8+ Rxe8
45.dxe8(Q)+ and wins at least a piece

If 44...Kg7
45.Re7+ Kh6
46.Qf7 and I don't think Black can stave off mate

45.Qf7+ Kg5
46.Re4+ Kh6
47.Qxf4+ Kg7
48.Re7+ and mate cannot be averted

Feb-24-16  offramp: The last move played was 40.Rd1-e1

click for larger view

As mentioned above, 40...Rb4 fails to 41.Rc4. But Gligo could have played 40.Qd6.

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If White now exchanges queens then Black seems to be all right, as his rook can go to d5 protecting the c-pawn.

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And that seems roughly level.

If he does not want to exchange queens then he has to play 41.Qc4. But now Black <can> safely play 41...Rb4.

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...And White doesn't seem to have any advantage.

But instead of 40.Rde1 White had another good move.

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40.Rc4! This wins. It threatens Rxc5. Here is a possible continuation|:

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40. Rc4! Be3 41. Qe4 Bd4 42. Qh4+ Kg7
(Of course if 42... Kf7 then 43.Qxh7+)

click for larger view

43. Rdxd4! exd4 44. Qe7+ Kh8 45.Rxc5

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46. Qe8+ Rxe8 47. dxe8=Q+ Qxe8
48. Bxe8, and White is a piece ahead.

Is it possible that Gligoric's flag fell with one move to make?

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