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Jonathan Speelman vs Nigel Short
London P&D (1980)  ·  Nimzo-Indian Defense: Normal Line (E40)  ·  1-0
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Aug-10-11
Premium Chessgames Member
  sevenseaman: The <nateinstein> line comes as a good surprise but;

34...Qe2+ 35 Rxe2 Rb1+ 36 Kg2 Bxa7 37 Nxe6 Ra1 38 Rxg7+ Kh8 39 Rxa7 Rxa7 40. Nxf8 and White is fine.

So <34. ng5> nails it for White.

Would <34...Qe2+> here be the notorious <GOOT>?

Aug-10-11  Skylark: I got this one, blocking the Queen's defense of g7.
Aug-10-11  APatzer: Cut the support of queen to king. Then king is nobody.
Aug-10-11  Nullifidian: I saw 34. Ng5 with mate in three to follow if Black plays 34... Pfxg5.

Black can put up a more tenacious defense with 34... Kh8. This is the move I'd play, since it makes the calculations slightly easier. White has nothing better than 35. Rxg7 followed by 35... Qe2+ 36. Rxe2 Rb1+ 37. Kg2 Bxa7 38. Rxh7+ Kg8 39. Rxa7 Pfxg5 40. Pfxg5. Now White is three pawns up, but Black has delayed the mate for well over a dozen more moves, by my estimate.

Aug-10-11
Premium Chessgames Member
  Once: Fritzie confirms that 34...Kh8 and 34...Qe2+ both avoid immediate mate but lose lots of material.

I suppose that's the risk with a GOOT. Because you are not making an immediate threat of capture or check, you give your opponent lots of options to come up with a clever defence.

Aug-10-11
Premium Chessgames Member
  whiteshark: Saw the interference within seconds. Still wondering about it, though. Funny times, no?
Aug-10-11  mw8286: Qe2+ still loses...

Qe2+ Rxe2
Rb1+ Kg2
Bxa7 Nxe6 winning...

Aug-10-11
Premium Chessgames Member
  morfishine: And the angry teacher barked out: "Now write 100-times on the chalkboard 'Interference sac by the Knight'" :)
Aug-10-11  abuzic: 33...Qg4 deserves ?? black is hunting the N and threatening ...Qh3+, ...Rb2; but the N will get away and cause the damage:

34.Ng4!, if black captures with 34...fxg5 he will be mated; so 34.Ng4 is defence, attack and mating net. Black has to find that only 34...Kh8 and 34...Qxe2+ prevent immediate mate at a cost:

-34...Qe2+ 35.Rxe2 Bxa7 36.Nxe6! Bc5 (36...Ra1 is worse: 37.Nxf8 Kxf8 38.Rc2) 37.Rxg7+ Kh3 38.Nxf8 Kxg7 39.Ne6+ Kf7 40.Nxc5, a N and 2P up enough to win.

-34...Kh8 35.Rxg7 Qe2+ (all other black's moves lead to forecd mate) 36.Rxe2 Rb1+ 37.Kg2 Bxa7 38.Rxh7+ Kg8 39.Rxa7 fxg5 40.fxg5, 3 passed P more than enough for white.

One interesting mate variation:

-34...Rf7 35.Rd8+ Rf8 36.Qf7+ Kh8 37.Qxf8+ Bxf8 38.Rxf8#

Aug-10-11  Dyonis: 34. Ng5 Qh5 35. Rxg7+ Kh8 36. Rxh7+ Qxh7 37.Qxh7 ++
Aug-10-11  Dr. J:


click for larger view

WHITE PLAYS 34 Ng5

Excellent work by all the commentators on <natinstein>'s idea 34...Qe2+. Combine it with <Nullfidian>'s idea of interpolating 34...Kh8 and it becomes even stronger:

34 Ng5 Kh8 <to lure the White Rook to g7 where it is vulnerable>

35 Rxg7 Qe2+
36 Rxe2 Rb1+
37 Kg2<A> Bxa7
38 Rxh7+ <better than 38 Nxe6 Bb8 and Black has a lot of fight left> 38 ... Kg8
39 Rxa2 fxg5
40 fxg5 winning

<A> Less good is 37 Re1 Rxe1+ 38 Kxe1 Bxa7 39 Rxh7+ Kg8 40 Rxa7 fxg5 41 fxg5 Rf4 winning back a pawn.

I doubt that <cg> saw ...Qe2+. I wonder if Speelman or Short did?!

...

Incidentally, the following is also an interesting problem:


click for larger view

<BLACK> TO PLAY AND WIN

Aug-10-11
Premium Chessgames Member
  mcguigan97: Rybka evaluates 34...Qe2 at about +6.13

Rybka recommends 34...Kh8, followed by 35. Rxg7 Qe2. Eval = +4.26

Either way, time for black to resign.

Aug-10-11  Ratt Boy: These lines involving ...Qe2+ are all very interesting. I figure Short didn't consider that move, or he wouldn't have resigned right away.
Aug-10-11  CHESSTTCAMPS: White is down a bishop for a knight and has a leaky pawn shelter for his king, but the doubled majors on the 7th cancel all positional defects. To win, white must commit offensive interference.

34.Ng5! establishes control of g7 and forces a quick mate:

A) 34... fxg5 35.Rxg7+ Kh8 36.Rxh7+ Kg8 37.Qg7#

B) 34... Qg1+ 35.Kxg1 Bxf2+ 36.Kxf2 Rb2+ 37.Re2 Rxe2+ 38.Kxe2 Rf7 39.Rd8+ Rf8 40.Qf7+ Kh8 41.R/Qxf8# looks to be the longest that black can hold out.

Speelman, one of the great English players who came to prominence in the mid 70s seems to get somewhat overlooked. Time for game review....

Aug-10-11  CHESSTTCAMPS: <<nateinstein:> Does 34...Qe2+ save the day?>

Nice - I would like to have analyzed that.

Aug-10-11  psmith: <Dr J> Would 1...Rd6 win in the position with Black to play? (2. Qxc5 Rxd7 ; 2. Qb7 Rxd7 3. Qxd7 Qxf3 ; 2. Rxg7+ Qxg7 3. Qxc5 Rfd8 at least ).
Aug-10-11  Dr. J: Yes, that's how I saw it. About a Wednesday-level puzzle, I think.
Aug-10-11
Premium Chessgames Member
  swr: Got it in a split second, nice
Aug-10-11
Premium Chessgames Member
  agb2002: White has a knight or a bishop.

Black threatens perpetual with 34... Qh3+ (35.Ke2 Rb2+ and 36... Bxa7).

White can avoid 34... Qh3+ and create a decisive threat against g7 with 34.Ng5, blocking the black queen:

A) 34... fxg5 35.Rxg7+ Kh8 36.Rxh7+ Kg8 37.Qg7#.

B) 34... Qh4(5) 35.Rxg7+ Kh8 36.Rxh7+ Qxh7 37.Qxh7#.

C) 34... Rb7 35.Qxb7, etc.

D) 34... Rfb(c)8 35.Rxg7+ and mate in two at most.

E) 34... Qe2+ 35.Kg2 (35.Kxe2 Rb2+ 36.Kf1 Bxa7 (36... Rxf2+ 37.Kg1 Bxa7 38.Rxa7 + -) 37.Rxa7 fxg5 38.f5 (38.fxg5 R8xf2+) 38... exf5 39.e5 Rf7; 35.Rxe2 Rb1+ 36.Re1 Rxe1+ 37.Kxe1 Bxa7 38.Rxa7 fxg5, etc.) 35... Qg4+ 36.Kh1 + -.

F) 34... Rf7 35.Rxf7 Bf8 36.Rxf8+ Kxf8 37.Qxb6 fxg5 38.Qd8+ Kf7 39.Qxg5 + -.

Aug-10-11
Premium Chessgames Member
  Patriot: I looked at this in 'blitz mode' and chose 34.Ng5 in under a minute or so.
Aug-10-11
Premium Chessgames Member
  sevenseaman: <Dr. J> Black wins with Rb5. White can see no profit in sacking his R on g7, so he has to save his Q. The Black B covers a3 and Q cannot support the threatened f3 N. At best it can choose a5 attacking the b5 R or it retires to a2 aiming for a spite check at e6 . The N falls. Whatever White does the Black Q will have time to check from h1 or f2.

<1...Rb5 2. Qa2 Qxf3 3.~ Qf2 (or Qh1)#>

Aug-10-11  Fuegoverde: 34 Ng5 , and black cannot defend g7
Aug-10-11  dadoktor: Ng5 is easy move more like tuesday i think
Aug-10-11  number 23 NBer: 34 Ng5 and I can't see anything for Black to do. Nice interference theme.
Aug-10-11
Premium Chessgames Member
  kevin86: The knight to g5 move is simple and instructive. Checkmate is threatened along the seventh row and black has no answer.
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