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Jan de Wit vs Nick de Firmian
6th Lloyds Bank Masters Open (1982), London ENG, rd 6, Aug-??
Sicilian Defense: Najdorf. Amsterdam Variation (B93)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Aug-28-12  sera: I had 33.Rbg1 as the solution to this
puzzle. e.g. 33.Rbg1 Ne6 34.Bxe6 Qxe6
35.Qxf8+ Kxf8 36.Rg8#.
Aug-28-12  sevenseaman: <Oxpawn> The help is outlined on page 50 (dated Aug-27-12) somewhere in the middle.
Aug-28-12  Apoline48: Why not 21... e3 pinning the Q and attacking white's B ?
Aug-28-12
Premium Chessgames Member
  Sastre: <Apoline48: Why not 21... e3 pinning the Q and attacking white's B ?>

White is fine after 21...e3 22.Nd5 Qd7 (22...exd2 Nxc7; 22...Bxd5 23.Qxd5 exd2 24.Qxf7+) 23.Bxe3 Qxf5 24.Bf3.

Aug-28-12  mccarthpm: R takes b6 wins easily too
Aug-28-12
Premium Chessgames Member
  SuperPatzer77: <zb2cr: 33. Qxf8, Kxf8; 34. Rh7! Now Black has no defense:


click for larger view

34. ... Kg8; Rg1#.

34. ... Qxf6; Bxf6 renews the mate threat. >

<zb2cr> 34...Kg8, 35. Rg1+ (not mate) Kf8, 36. Rh8#

White mates in two if 34. Rbg1 or 34. Bh7 see below:

34...Qxf6, 35. Bxf6 (Black any move), 36. Rg8#

If 34. Rh7 - see below:

a) 34...Kg8, 35. Rg1+ (not mate) Kf8, 36. Rh8#

b) 34...Qxf6, 35. Bxf6 Kg8, 36. Rh8#

SuperPatzer77

Aug-28-12  Zatrikion: 33.Qxf8+ Kxf8
34.Rag1 and mate cannot be avoided (Qxf6 then Bxf6)
Aug-28-12
Premium Chessgames Member
  Tiggler: <sightlesswisdom>: <Does anyone see any reason why 33. Rbg1, with the threat of 34. Qxf8+ doesn't work? That is to say, I had moves 33 and 34 switched around in my solution. Did I miss something?>

Even though it allows 33... Ne6, it does work. Only because Black has previously castled, however. We do not know that if we just look at the puzzle position.

Aug-28-12
Premium Chessgames Member
  Castleinthesky: Got it today. It's a nice game to review, as white methodically prepares for the sac.
Aug-28-12  mccarthpm:

Aug-28-12 master of defence: I was thinking in 33.Rxb6, winning the queen, because 33...Qxb6 34.Bxd7+ Nxd7 35.Qxf7+ Kd8 36.Qxd7#. Or I missed something? this works fine

Aug-28-12  Alex56171: <sightlesswisdom> 33. Rbg1 also works, only takes 6 x 4 moves to checkmate (by Fritz). But generates a more complex and elegant combination.
Aug-28-12
Premium Chessgames Member
  gawain: The only Black piece in position to defend the King is the poor bishop. Therefore it has to begin with 33 Qxf8+. I suppose after 33...Kxf8 White will play 34 R/1g1. I see no way for Black to stop the mate.
Aug-28-12  MATTYMONKEES: I went <mccarthpm>'s way as well. 33. Rxb6 works, it's just that it takes longer.
Aug-28-12
Premium Chessgames Member
  chrisowen: Ha I book it wobbled knightc5 in clink again g5 to d7 (all equal)

untill d5 in tie back e3 it breakthrough in g6 to present day aim

for 33.qxf8+ in slim picking e8 is all out of sink with pieces

scattered among queenside in block glock rook upto protect I f7 in

cake it walk queen gadzooks take f8 in king slider.

Aug-28-12
Premium Chessgames Member
  kevin86: The queen sac is to be followed by a quiet rook move. But mate will follow,there is no escape...
Aug-28-12  gars: <Phony Benoni>: I quote <LoveThatJoker>:

33) Qxf8+! Kxf8
34) Bh7 Qxf6
35) Bxf6 any
36) Rg8#

Aug-28-12
Premium Chessgames Member
  whiteshark: That's quite an execution.
Aug-28-12
Premium Chessgames Member
  gofer: http://www.chessvideos.tv/endgame-t...

1 Rbg1... mate in 7(?)
1 Qxf8... mate in 4

Aug-28-12  stst: Yeah, easy, but too many options.
Pick the most obvious:
33.QxB+ KxQ (forced)
34.Rh7 (cool, not immediate kill, but forcing mate next) ...now if (A)Kg8 ==> 35.Rg1#
(B)Ke8 or QxP@a4 or NxP@a4 ==> 35.Rh8#

The strike 33.BxR+ may win material, but will prolong the winning sequence, if there's one.

Aug-28-12
Premium Chessgames Member
  SuperPatzer77: <stst ... 34.Rh7 (cool, not immediate kill, but forcing mate next) ...now if (A)Kg8 ==> 35.Rg1# ...>

34. Rh7 Kg8, 35. Rg1+ (NOT MATE) Kf8, 36. Rh8#

SuperPatzer77

Aug-28-12  Jambow: Just didn't see it :0(
Aug-28-12  Amarande: Chose the Bh7 variation myself. I think it's because I'm reminded of some of the sidelines in Saemisch vs F Herzog, 1924 where mate is forced by a similar Bishop move.
Aug-28-12  xynkrn: Thought about 33.Rxb6 following the same line of reason as

<<master of defence>: I was thinking in 33.Rxb6, winning the queen, because 33...Qxb6 34.Bxd7+ Nxd7 35.Qxf7+ Kd8 36.Qxd7#.>

Knowing this Black's best move will be 33...Ne6 but after 34.Bxe6 Black has no way to escape a checkmate. Some lines might be:

34...fxe6 35.Rxc6 Bxc6 36.Qxc6+ Re7 37.Rxe7+ Bxe7 38.Qxe7#

34...fxe6 35.Rxc6 Bxc6 36.Qxc6+ Kd8 37.Rg8 Kc8 38.Qxc6+ Rc7 39.Qxc7#

34...fxe6 35.Rxc6 Bxc6 36.Qxc6+ Be7 37.Rg8#

34...fxe6 35.Rxc6 Rxg7 36.fxg7 Bxc6 (Bishop at f8 is pinned) 37.gxf8=Q+ Kd7 38.Qd6#

34...fxe6 35.Rxc6 Rc8 36.Rxe6+ Re7 37.fxe7 Rc7 38.exf8=Q#

34Qxf6 35.Rxe6+ fxe6 36.Qxe6+ Re7 37.Rxe7+ Bxe7 38.Qxe7#

34Qxf6 35.Rxe6+ Re7 36.Rxe7+ Kd8 37.Qxf8#

Aug-28-12  Moonwalker: Missed it.. Embarrassing!
Aug-30-12  Checker2: <master of defence> Sorry, that was 33 ...Ne6 but it is not much of a defense. It loses the queen and only delays mate a few moves.
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