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Bogdan Lalic vs J C Hannet
Islington Congress (1998), Islington ENG, Dec-19
King's Indian Defense: Saemisch. Bobotsov-Korchnoi-Petrosian Variation (E81)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-03-13  TheaN: Tuesday 3 September 2013

<30.?>

A dangerous position where both colors are trying to create a decisive breakthrough. White is to move, and it is sufficient time to set up a winning combination. This one is fairly easy, where white wins more material and gets the sting out of the black attack.

<30.Rxf8+ Kxf8 (Qxf8 31.Qxh7#)> and now the prosaic, bit lame <31.Bh6 > winning the queen and the king soon thereafter.

Sep-03-13  TheaN: I had initially considered 30.Bd4, but for my own feeling this feels too slow. Black has no winning combination, but the position calls for it that he could have.

I thought of moves like Rb1 or c2 to stir up more pressure for white, but perhaps <PB>s Qb7 is even more striking for the 'slow' adaptation of Bd4. Bxc3 looks very tight, and white can't go with 31.Rxf8+! Kxf8 32.Qh6+ Kh8..... yeah and now what?

It probably wins, but 30.Rxf8+ is clear cut and forced without any real risks.

Sep-03-13  radtop: How is Bd4 too slow?
Sep-03-13  zb2cr: Quick and simple. 30. Rxf8, Kxf8 (forced, if ... Qxf8; 31. Qxh7#); 31. Bxh6. White ends up with Q+N vs. R+P.
Sep-03-13  gofer: There seems to be a number of winning moves as white is already a whole knight up and black's attack on the b file and a1-h8 diagonal hasn't got going yet. But I would guess that probably Rxf8+ ranks the highest. It is also very forcing and completely destroys black's chances any counter-attack, but it isn't a quick kill.

<30 Rxf8+ ...>

30 ... Qxf8 31 Qxh7#

<30 ... Kxf8>
<31 Bh6 >

My bet would be that black resigns, the only chance to stop white's queen infiltrating into black's king side is to support the queen rather than exchange on h6,

31 ... Qxh6
32 Qxh6+ Ke7 (Kg8 33 Qxh7+ Kf8 34 e7#)
33 Qg5+ Kf8
34 Rxh7 mating

<31 ... Rb7>
<32 Qxd6+ Kg8>
<33 Bxg7 Rxg7>
<34 Qe5 ...>

At which point white's connected passed pawns will finish off any resistance.

Sep-03-13
Premium Chessgames Member
  Oxspawn: I am two for two this week. Didn't get Monday. Now did not get Tuesday either. Saw Rxf8 but failed in the follow up. The week can only get better. Or worse.
Sep-03-13  Calar: I only saw 30. Bd4, with the following lines:

a) 30...Qb7 31.Qxh7+ Qxh7 32.Rxh7 with mate soon to follow b) 30...Qh6+ 31.Qxh6 bxh6+ 32.Bxh6 where Black managed to avoid mate, but is two pieces down with no compensation

And now I see Lalic played much quicker and simpler 30.Rxf8.

Sep-03-13  bubuli55: 30. Rxf8 Kxf8 31. Bh6

winning the Q. And no counter play by Black.

Sep-03-13  TomOhio: Why isn't there a "???" behind 29. ... Be8?
Sep-03-13  Stormbringer: I often miss the Tuesdays, but got this one. I looked at trying to deflect the queen with Bd4 but Rxf8 is much more elegant.

Take the bishop with check, nowhere to run, nowhere to hide, forcing either the king or queen to take. If the queen takes then checkmate, if the king takes you lose the queen to a bishop pin, likely followed shortly by mate.

Sep-03-13
Premium Chessgames Member
  Phony Benoni: <FSR> Conceded. It looks as though after 30.Bd4 Black must give up a piece with 30...Qxh6+ to avoid being mated.

That may account for Houdini's preference, since 30.Rxf8+ wins Black's queen for a rook, and retains White's queen in a position where Black's king isn't safe.

Of course, in practical play there is no difference between +20 and +16, so either solution is a solution. Perhaps 30.Rxzf8+ is more of a "tuesday" move.

Sep-03-13  TheaN: <Calar: I only saw 30. Bd4, with the following lines: a) 30...Qb7 31.Qxh7+ Qxh7 32.Rxh7 with mate soon to follow >

Ah that's what I missed after 30....Qb7. I considered hitting at h7, but thought that the interposing on h6 would not lead to anything for white. The combination follows 32....Kxh7 33.Rh1+ Bh6 34.g5 (this is very similar to a puzzle of last week) Kg8 35.Rxh6 Kf8 36.Bf6 with mate after black throws some rooks at the white king.

The alternative of 30....Qh6+ might not be an immediate mate due to trading queens but it is in no way plausible for black.

Sep-03-13  James D Flynn: Black is a pawn up and has a R controlling he open b file next to the White K. White has a R on the open f file and an attack on the pawn on h7 with Q and R and his black square B can attack the Black Q on g7. 30.Rxf8+ Kf8(not Qxf8 31.Qxh7#) 31.Bh6(wins the Q for a R and the Black K cannot flee to the Q side via e7 because a Q check on h4 or g5 forces it back).
Sep-03-13
Premium Chessgames Member
  Nightsurfer: <FSR>
Today my initial reflex has been <30.Bd4! ...> too, so I am happy to see that you endorse that 2nd solution as well!
Sep-03-13  notyetagm: <Patriot: Ok, 30.Bd4 Qe7 actually wins for white.>

Followed by 31 ♖f1-f7! <INTERFERENCE> was my idea.

Sep-03-13
Premium Chessgames Member
  kevin86: I saw this one:White mates or wins black's queen.
Sep-03-13  bubuli55: Just to show the + of White,

30. Qxh7+ also wins

Sep-03-13  BOSTER: Watching today <POTD> I I'd play the "idiot combo" according to J.Silman, in "other words I did something stupid, but I did it is style".

30.Qxh7+ Qxh7 31. Rxf8+ Kxf8 32.Rxh7.

But if I played before 30.Bd4 Qb7 31.Qxh7+ Qxh7 32.Rxf8+ Kxf8 33.Rxh7 and after next Bf6 game is over.

Sep-03-13  Marmot PFL: My first thought was 30 Bh6 (not a bad move) but then quickly realized that after 30 Rxf8+ both captures lose quickly.

In almost all positions like this eliminating the fianchetto bishop is an important goal, even though here it's the queen that's on g7.

Sep-03-13  MiCrooks: I too jumped on Bd4 seeing that it forced mate. I did think that it did not qualify as easy, so was not surprised to see Rxf8 Kxf8 Bh6 winning the Q for a R and keeping the attack going as well as the main continuation.

I must say that I disagree with those that would prefer one over the other. It is hard to disagree with forced mate on the one hand even if the variation is longish. Likewise, winning the Queen makes the rest easy and mate is likely to come almost as fast.

Sep-03-13  MiCrooks: A funny sideline is that engines pick out h6 as the best response to Bd4 meaning that you get to pick up the Queen for the Bishop without sacking the Rook first :)

However the assessments are actually worse for Black after Rxf8 as that Bishop helps to delay White's attack after Bd4 h6 Bxg7 Bxg7 Qxd6...still no one should argue that this position isn't equally as crushing.

Sep-03-13
Premium Chessgames Member
  FSR: <Phony Benoni: ... Perhaps 30.Rxf8+ is more of a "tuesday" move.>

True. The variations arising after 30.Bd4 are pretty complicated for a Tuesday. More Thursday-ish. If I were more clever, that might have tipped me off that 30.Bd4 was not the intended solution.

Sep-03-13  Alex56171: 30.Rxf8+ Kxf8 (30...Qxf8 31.Qxh7#) 31.Bh6
Sep-03-13
Premium Chessgames Member
  Penguincw: I came up with the not so great variation of 30.♕xh7+ ♕xh7 31.♖xf8+ ♔g7 32.♗d4+ ♔xf8 33.♖xh7


click for larger view

In this position, black has a rook vs. two minor pieces.

Sep-03-13  Patriot: <<notyetagm>: <Patriot: Ok, 30.Bd4 Qe7 actually wins for white.> Followed by 31 Rf1-f7! <INTERFERENCE> was my idea.> I like it! It should be a simple win. As Dan Heisman told me once, "I like to sacrifice my opponent's pieces." If my memory is correct he was paraphrasing a GM. Sometimes flashy sacrifices aren't necessary.
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