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Huub van Dongen vs Eric Wijsman
Eindhoven (2005), Eindhoven NED, Mar-19
Sicilian Defense: Kan. Knight Variation (B43)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Jan-31-16  greed and death: 74. Rd3 is just beautiful.
Jan-31-16  nalinw: Can I get something for memory? :-)

I remembered the right move from before but still could not figure out why it wins in every case.

Jan-31-16  mike1: got the white move but think blacks fine after Rc8! any ideas?
Jan-31-16
Premium Chessgames Member
  al wazir: I also think 74...b3 was better than 74...Nb5, the move played.

My try was *totally* different: 74. Rh3 Nd5 (74...d3? 75. Rxd3) 75. Rh4 d3 (75...e3 76. Re4 Nf4+ 77. Rxf4 exd2 78. Re4 Rxh6+ 79. Kxh6 d1=Q 80. Re8+ Kf7 81. g8=Q#) 76. Rxd3 exd3 77. Rxc4 Ne7+ 78. Kxf6 Rxh6+ 79. Kxe7 Kxg7 80. Rg4+ Kh7 81. f6 d2 82. Rg1.

I doubt that this analysis is conclusive, but it's mine.

Jan-31-16  devere: I solved this only 2 1/2 years ago, and it came back to me in a flash. 74.Rdd3!! is one of the most amazing moves ever played in over the board chess. It is worthy of comparison with Shirov's famous 47...Bh3!! against Topalov at Linares(1998) Topalov vs Shirov, 1998
Jan-31-16  devere: < nalinw: Can I get something for memory? :-)I remembered the right move from before but still could not figure out why it wins in every case.>

It should be a draw if Black responds 74...b3! Then 75.Rxd4! Rxd4 76.Rxc3 Rd8 77.Rxb3 Re8 78. Re3 Re7 79. Rb3 Re8 80. Re3 Re7 =

Jan-31-16  patzer2: Need to correct my 2013 post. While 74...b3! is the best move for Black after today's Sunday solution 74. Rd3!!, it's not winning.

It's a draw after 74. Rd3!! b3! 75. Rxd4! (forced as all other moves lose) 76. Rxc3 Rd8 77. Rxb3 Re8 78. Re3 when play might continue 78...Re7 79. Rc3 Re8 80. Re3 Re7 81. Rc3 Re8 82. Re3 = (draw by three-fold repetition).

Jan-31-16  patzer2: <nalinw: Can I get something for memory? :-)I remembered the right move from before but still could not figure out why it wins in every case.> I thought of the J. Gellis song lyric "my memory has just been sold" from their 1981 hit single "Centerfold," when I saw the solution to today's Sunday puzzle. I had a feeling I'd seen the problem before, but couldn't remember the winning continuation.

I really wanted to try 74. Rd3!! but couldn't figure out how to avoid losing after 74...b3! So I went for 74. Rh3? which loses to 74...Nd5 (-14.93 @ 20 depth, Deep Fritz 15).

Jan-31-16
Premium Chessgames Member
  perfidious: <PB....Not wanting to face the Zugzwang Police (who are excellent at keeping you under restraint), I won't say it's mutual zugzwang. But it's in the neighborhood.>

They are a nasty lot.

Jan-31-16
Premium Chessgames Member
  agb2002: I remembered the position and Rdd3. This was my post

H van Dongen vs E Wijsman, 2005 (kibitz #29)

Jan-31-16
Premium Chessgames Member
  Gilmoy: <Phony Benoni: 74.Rdd3 is not a move that is easy to find over the board ... So how do you find it in a game?>

It pops up as a (beautiful) addendum to an endgame pattern. With White to move in all cases below:

<2CPP6 beats R not under>:


click for larger view

<2CPP7 beats R under either>:


click for larger view

But if it could beat RR, we would have said that in the first place. Ergo, <RR beats 2CPP7>:


click for larger view

with the amazing <Space Invaders-like> move of <1.Rec1!>


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and White trades R for <both> pawns.

Jan-31-16  The Kings Domain: I was thinking of moving the King to h5 so as not to be too obvious but then one has to remember this is master play. :-) Nice puzzle.
Jan-31-16  patzer2: Didn't need to correct my 2013 post after all. At first glance, I thought I had posted 74...b3! was winning.

Instead, I indicated it was 73...b3! which wins. Deep Fritz 15 confirms 73...b3! (-6.53 @ 23 depth) is the win Black missed.

So to sum up, 73...b3! wins and after 74. Rd3!! the reply 74...b3! = forces the draw.

Jan-31-16
Premium Chessgames Member
  Once: Ah yes, this one. 74. Rdd3 isn't too hard to spot because the black d and e pawns are pinned against the back rank mate threat.

With 74. Rdd3 we are putting nearly all of black's pieces into zugzwang.

But 74...b3 holds the draw after 75. Rxd4 Rxd4 76. Rxc3 Rd8 77. Rxb3


click for larger view

Drawn. The white rook can't hoover black pawns because he needs to keep an eye on the black e4 pawn. The loose black rook can't hoover white pawns because he must defend against the back rank mate. And nobody else can sensibly move.

Jan-31-16  morfishine: So, Black could've won on move 73 and drawn on move 74 but ended up losing

That explains everything, particularly why I was stumpified in even assessing whether there was a win or if this was a spoiler or some other animal

*****

Jan-31-16  Patriot: I was happy to find 74.R2d3 as both rooks are immune to capture--black is in zugzwang. 74...b3 is the only attempt it seems. 75.Rxd4 Rxd4 76.Rxc3 Rd8 77.Rxb3 and black is practically helpless against Rb6. For example, 77...Rxh6+ 78.Kxh6 Rd7 79.Rb8+ Kf7 80.Rf8+ . 77...Rc8 78.Rb6 Ra8 79.Rxf6 .
Jan-31-16
Premium Chessgames Member
  sleepyirv: On one hand, Black is up a knight and pawn with THREE passed pawns.

On the other hand, White has a great backrow mate threat, and has one of Black's rooks tied up along with his king.

On the OTHER, other hand, the White king is tied up tying up the Black rook and king and we can't allow the c4 rook to get on the g-file without a big explosion. And there's no simple way to get one of our rooks an open file (Three passed pawns, remember?)

A weird position calls for a weird move: 74. Rdd3! Black is in near zugzwang. If 74... b3 then 75.Rxd4 seems good. And any knight move allows Rxe4. I don't have a lot of concrete calculations, but not too bad for Sunday.

Jan-31-16
Premium Chessgames Member
  Jimfromprovidence: <patriot> <I was happy to find 74.R2d3 as both rooks are immune to capture--black is in zugzwang. 74...b3 is the only attempt it seems. 75.Rxd4 Rxd4 76.Rxc3 Rd8 77.Rxb3 and black is practically helpless against Rb6. For example, 77...Rxh6+ 78.Kxh6 Rd7 79.Rb8+ Kf7 80.Rf8+ . 77...Rc8 78.Rb6 Ra8 79.Rxf6 .>

After 77...Re8 78 Rb6 you will find another wrinkle to this amazing puzzle. Black to play.


click for larger view

Jan-31-16  Patriot: <Jimfromprovidence> Nice catch! I couldn't find a decent way to proceed for white...he loses here.

Going back a move, 78.Re3 is the only option, drawing.

Jan-31-16  morfishine: So, all in all, Its a draw

I guess its a good "puzzle" due to the amount of visualization and/or overall effort one must put into the position.

This has to be categorized as a 'spoiler' since Black missed the draw

*****

Jan-31-16
Premium Chessgames Member
  sleepyirv: <morfishine> Not in the least. CG.com sometimes gives a puzzle where one side is trying to save a draw. As no better move can be given for White, I have to say there's no "spoiler" to the puzzle, even if Black misses a draw.
Jan-31-16  sushijunkie: Got it! Rare, for me.
Jan-31-16  stst: A true Berlin Wall!
White only needs to get a rook to the 8th rank and game over. But, don't see any trick to "jump" over the Berlin wall, while don't want to move the W King to loosen up either. Note that any of the two Black d and e pawns couldn't take either Black R, for then the other R will dash to the 8th rank, mate.

The best I tried:
74.Rd3 (a pause move, see what Black's response)
IF (A)........ b3
75.Rxd4 RxR
76.RxN Rd8 (have to guard 8th rank at once)
77.Rxb3 Re8

Now White is open up, but allowing the pass e-pawn to advance will be risky, yet if 78.e3
then W will lose as Kxf6 will be forced move, but then Rxh6+ will be favoring Black.

The adventurous 78. Rb6 eyeing Rxf6 and Rf8+ is one move slow: 78.Rb6 e3
79.Rxf6 e2
80.Rf8+ RxR
81.gxf=Q+ KxQ
82.KxR e1=Q and Black will prevail.

Must either missing some trick, or a totally different approach that will reward White ultimately..... yes, quite insane!

Jan-31-16  stst: <I also think 74...b3 was better than 74...Nb5, the move played.>

---> Totally agreed!!

That's what I also thought, often, the game's move is NOT optimal, and here, giving White the obvious advantage...

We want a solution where both sides are playing the BEST move, not anything that's soft, weaker, or inferior, etc.

That gives the solver an excuse --- "That doesn't count!!"

N.G. for CG...get something forbidding any objections!!

Feb-04-16  Patriot: <morfishine> <So, all in all, Its a draw> Amazingly, it is!
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