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Gilles Andruet vs John van der Wiel
Montpellier Zonal (1985), Montpellier FRA, Mar-??
King's Indian Defense: Orthodox Variation. Classical System Neo-Classsical Line (E99)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Dec-27-16
Premium Chessgames Member
  Once: Houston, we have a problem.
Dec-27-16
Premium Chessgames Member
  gofer: Yep. This one is indeed <Easy> if white plays <32 Bxd5>, but as many have pointed out <32 exd5> is far more tricky. But I suppose (if we were playing this ourselves) we would expect <32 exd5> and have already worked out the response <32 ... Nf5!> which is a killer...


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Black threatens Ng3#

33 g4/g3 fxg3

33 h6 Ng3+
34 Kh2 Rh6

Okay, as <Scormus> writes, our silicon buddies find

<33 Qb6 Qg5>
<32 Qf2 ...>

giving the white king an escape square, of sorts, but still with the massive problems to defend against

<32 ... e4>


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Hmmm, I would still be pretty confident that white would stuff up this defence...

Okay not a <Tuesday> level POTD, but still a very nice position.

Dec-27-16  7he5haman: CG took Sunday and Monday off (Christmas and Boxing Day) so they're giving us a Sunday level puzzle today ;-)

(Joke)

Dec-27-16  Akabara: I have been wanting to participate since forever so hi everyone thank you for your comments that I read eagerly for more than a year! :-)

I actually liked this puzzle, and it's the first time I seem to have make more progress than you guys ^^

As gofer points out, I went for the <32 exd5> line after a quick dismiss of the <32 Bxd5> line. However, on the reply <33 Qf2> I think you missed <33 ... Ng3!> forcing a queen sac on the horsey, there's mate in preparation with <34 Kg1 Qh2+>
<35 Kxh2 Rh6+>
<36 Kg1 Rh1#>

I think after <34 Qxg3 fxg3> there should be a quick mate no matter what.

<33 h3> seems more resilient to me.

Dec-27-16  Mayankk: The only 'puzzle-like' forcing move I could think of was Bh3. Lots of defensive options for white after that. Not very clear as others have pointed out and probably CG put this puzzle one move too early. Should be 32 - Black to play and win.
Dec-27-16  AlicesKnight: I was with those who thought ...Nxd5 inconclusive because of exd5 which kept e2 covered. Post-prandial sluggishness....
Dec-27-16  mel gibson: There is no quick win here.
White cannot reply as he did with:
32 BxN or it's mate in 8.

The computer says this:

31. .. Nxd5
(♘e7xd5 e4xd5 ♘d4-f5 ♕g1-b6 ♗g7-f8 ♕b6-d8 ♔h8-g7 ♕d8-c7+ ♔g7-h6 ♕c7xc8 ♗f8-c5 ♖f1-f2 ♗c5xf2 ♕c8-f8+ ♘f5-g7 ♕f8-a3 ♕h5-g5 ♗c4-f1 ♘g7-f5 ♕a3-f8+ ♖g6-g7 ♕f8-e8 ♖g7-g8 ♕e8-f7 ♖g8xa8 c6-c7 ♕g5-g6 ♕f7xg6+ h7xg6 g2-g4 ♘f5-d6) +3.36/18 190)

Score = +3.68 depth 18.

Dec-27-16
Premium Chessgames Member
  Carlos0012358: 32.Bxd5 definitely aņos error.
32.exd5 trumps the devastating 32....Ne2 and complicates white's life very much. But.....with the black N out of the way, now the white square black B has a clear diagonal and can attack by 32....Bh3! Not a cake walk for black as white has as many as four pawns reaching for promo. Black must hurry and close the deal..... How?
Great puzzle! Maybe not a Tuesday, but a great puzzle.
Dec-27-16
Premium Chessgames Member
  chessgames.com: <Should be 32 - Black to play and win.> That's right, sorry about that.
Dec-27-16
Premium Chessgames Member
  YouRang: Tuesday 32.?


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My first thought (bleary eyed and before coffee) was ...Qxh2+, Kxh2, ...Rh6# - It's Monday again!

Then I had a sip of coffee and noticed that the blob on g1 wasn't a rook, but a queen.

This spoiled my pre-coffee plan, but at least I knew that deflecting the queen would be winning, and the knight hanging there on d4 is ready to do just that: <32...Ne2>


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White must now either (1) lose either the king, or (2) lose the queen and then the king a few moves later. White opted for quickness.

Dec-27-16  drollere: this one wasn't hard, once you see Qxh2+ can be met by Qxh2. once you displace the Q with an attack on the only flight square for the K, the Q sacrifice is fatal.
Dec-27-16
Premium Chessgames Member
  lost in space: Indeed easy.

After 32...Ne2 white should move the queen, either on f2 or on c5/b6/a7, if he do not want to lose the queen for one minor piece.

But moving the queen allows 33...Qxh2+ which is winning due to mate next move (34..Rh6#).

So White can choose which way to lose.

Dec-27-16
Premium Chessgames Member
  Jimfromprovidence: After 31...Nxd5, if 32 Rf2, then 32...Bf8.


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if 33 Bxd5, 33...Bc5, threatening 34...Nxf3.


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If 33 exd5, 33...Nf5, threatening 34...Ng3#


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Dec-27-16  saturn2: The black knight goes with tempo to e2 and then mate comes on the h file established by queen sacrifice and rook h6++
Dec-27-16
Premium Chessgames Member
  paulalbert: I looked at this very early this morning and could not find an easy solution. No wonder because position had white B on c4 so e2 square was protected.

Glad I did not spend too much time banging my head against the wall since we had to take our son to the airport for a 6:30 AM flight.

Dec-27-16
Premium Chessgames Member
  varishnakov: First I see that if 32...QxP+ 33.KxQ R-R3 is mate, but white instead has 33.QxQ. So for this reason 32...N-K7 wins the queen as it cannot vacate the protection of the RP.

The question is whether there is anything better, such as a forced mate. 32...B-R6 is an obvious move yet it doesn't seem more forcing, so I'm going with 32...N-K7.

Dec-27-16
Premium Chessgames Member
  lunchwithgina: After 32...Ne2 I saw that the Q was nailed to g1 like flypaper to prevent the mating combination after ...Qh2+. And there is no time for a Q-side advance because of 33...Ng3, leaving only 33. g4 fg 34. Qg2 Nf4 as other members have pointed out, or 33. h3 Bh3. An entertaining finish!

I see that Andruet came to a untimely end; a grim reminder that self-destructive actions and habits predicate a sad destiny.

Dec-27-16  Marmot PFL: Very easy today 32..Ne2 33 Q moves Qxh2+ etc.

In general it seems that once black gets g3 in the KID in the attack almost plays itself. In fact I think white is already worse (maybe losing) by move 20 due to some poor early middlegame decisions.

Dec-27-16
Premium Chessgames Member
  agb2002: Today's first puzzle was really interesting. Then I thought it was Innocents's Day. It was not.
Dec-27-16
Premium Chessgames Member
  Gregor Samsa Mendel: It's good to know that I wasn't the only one who had trouble with the earlier version of this puzzle.
Dec-27-16  Howard: What was the earlier version ?
Dec-27-16  scormus: I really dont see the sense in CG changing the puzzle so late. We'd already solved the original one by then, and the people coming to it later and only seeing the corected puzzle have to figure out what the previous posts are about.

<Howard> Try it 31 ... B to play. Its really a better puzzle than the one CG are putting now. More difficult too!

Dec-27-16
Premium Chessgames Member
  YouRang: The only real interesting reply by white to <32...Ne2> is <33.g4!?>


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Black still has a couple moves that win, but some plausible moves that don't, so black has to think.

Best is <33...fxg3 34.Qg2>


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White has gotten his queen out of take, so what is best for black now? Now <34...Bh3! 35.Qxe2 g2+!> and it's soon over.

Dec-28-16  SpiritedReposte: Ok a lot of those aren't even words bro.
Dec-29-16  Moszkowski012273: Correct and crushing is 27...Qh5 NOT what was played.
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