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Mark van der Werf vs Friso Nijboer
ch-NED (2001), Leeuwarden NED, rd 8, Jun-29
Gruenfeld Defense: Exchange. Spassky Variation (D87)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Dec-18-15  Virgil A: Not that difficult really. 32...Rd7 is a forced move.
Dec-18-15  Tiggler: <jith1207: .... I hope I get one day patience to go through all lines carefully and take time to solve a weekend puzzle cleanly.>

When I was a kid and had just started playing chess, I noticed that others always said, as a put down or an excuse, "I haven't the patience".

Dec-18-15
Premium Chessgames Member
  thegoodanarchist: < offramp: Everybody Needs Good Nijboers.>

Which can be abbreviated as "Gooboers"

Dec-18-15
Premium Chessgames Member
  kevin86: Black sacrifices queen and rook to make a super-passed pawn and end up queen for rook and knight and... two pawns ahead.
Dec-18-15
Premium Chessgames Member
  tamar: Like a good neighbor, Friso did not give a discount double check.
Dec-18-15  Sniffles: Now this is a cute conundrum! Let's call this Machiavellia's last stand.

First I must get rid of that pawn threat. No problem.

Now my young Jedi on G4, you are my only hope. So let's set up a sucker trap. A queen pin too tasty to refuse.

There! That other pesky rook is gone. Onward and may the force be with you, little pawn.

All black has to do is keep that rook off the G file.

Dec-18-15  Marmot PFL: All looked forced to me, and not too hard to find (when you know it's a puzzle).
Dec-18-15
Premium Chessgames Member
  gawain: All logical--but still pretty deep.
Dec-19-15  stst: Step overtime, but thought that ....gxf3 would have advantage, despite of the imminent promotion of White's d7 P.
Oct-25-19
Premium Chessgames Member
  andrewjsacks: The ghost of Alekhine.
Oct-25-19  Walter Glattke: Test: 32.-gxf3 33.d8Q+ Kh7 34.Re1? f2 35.Rb1 f3 wins, 34.Rd7 Qxe2+ 35.Kc1 f2 36.Rxg7+ perpetual
Oct-25-19  mel gibson: The moves are forced.
I saw it.

Stockfish 10 agrees with the text:

32... Rxd7

(32. .. Rxd7 (♖g7xd7 ♖d5xd7 g4xf3 ♖b1-g1 ♕g2xg1 ♘e2xg1 f3-f2 ♖d7-d8+ ♔g8-g7 ♘g1-f3 f2-f1♕ ♘f3-e1 ♕f1-f2+ ♔d2-d1 f4-f3 ♘e1xf3 ♕f2xf3+ ♔d1-c2 ♕f3xe4+ ♔c2-c1 ♕e4-e1+ ♔c1-c2 ♔g7-f6 a2-a4 ♕e1-a1 ♖d8-f8+ ♔f6-g7 ♖f8-f3 ♕a1-e1 ♖f3-g3+ ♔g7-h7 ♔c2-b2 ♕e1-d2+ ♔b2-b1 ♕d2xh2 ♖g3-g5 ♕h2-e2 ♖g5-g1 ♕e2-d3+ ♔b1-b2 ♕d3-d2+ ♔b2-b1 ♕d2xc3 ♖g1-h1 ♕c3-d3+ ♔b1-a1 ♕d3-d4+ ♔a1-a2 ♕d4-d2+ ♔a2-b1 ♕d2-e2 ♔b1-c1 ♕e2-e3+ ♔c1-b2 c4-c3+ ♔b2-a1) +15.12/40 213)

score for Black +15.12 depth 40.

Oct-25-19  1stboard: Aren't pawns just wonderful .....
Oct-25-19  1stboard: < andrewjacks > , yes Bogoljubov vs Dr. Alekhine Hastings 1922 , most incredable game I have ever seen.
Oct-25-19  stacase: So it's a decision:
#1. 32...gxf3 and let White Queen his Pawn
  or
#2. 32...Rxd7 sacrifing the Rook.

It's better if White winds up a Rook rather than a Queen up.

So 32...Rxd7 White responds with 33.Rxd7 and now 33...gxf3

34.Rg1...Qxg1
35.Nxg1...f2

And Black's Queening Pawn can't be stopped so White tips his King over.

I didn't see all the way to moves 34 & 35 but as one of those little "Post Kibitz" tips says, "Nobody ever wins by resigning."

Oct-25-19  WorstPlayerEver: The nijboer doesn't fall far from the yard.
Oct-25-19  Andrew Chapman: 32.Rg1 makes it much more of a battle.
Oct-25-19  TheaN: I have to be honest that I missed the direct pin 34.Rg1, but then Qxg1 with f2 is obvious; required for a solve, perhaps. The key is that Black can sac on d7 because of the hazardous position of the other Black pieces (and by proxy, the dangerous placements of the White pieces, mainly the second rank pin). If 34....Qxg1 works then 33....gxf3 does, and then 32....Rxd7 -+ does. Not too complicated.
Oct-25-19  5hrsolver: Got this one for once.
Oct-25-19  Cheapo by the Dozen: I never seem to remember the old "Pawn on the seventh rank threatening a knight" trick. Each time I see it its effectiveness shocks me anew.
Oct-25-19
Premium Chessgames Member
  agb2002: Level 3: 27...?
I Rudakovsky vs Smyslov, 1940


click for larger view

Oct-25-19
Premium Chessgames Member
  Breunor: Van der Werf forces!
Oct-25-19  King.Arthur.Brazil: Due to the little material and moves disponible, I guess that black moves are natural and I found all easy and correct.
Oct-25-19
Premium Chessgames Member
  Jimfromprovidence: Just joking of course, but it's too bad white did not have two moves after 35...f2, below, as his own king blocks the rook from getting to d1.


click for larger view

Oct-25-19  Carrots and Pizza: I saw the ideas of taking on d7 and f3, but overlooked white pinning the queen with Rg1. I only figured on Rd1 to protect the knight and to me, it wasn't clear how black should proceed after that. Difficult puzzle for me.
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