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Tylkowski vs Antoni Wojciechowski
"The Pearl of Poznan" (game of the day Apr-10-2017)
Poznan (1931), Poznan POL
Bird Opening: Dutch Variation (A03)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Given 7 times; par: 73 [what's this?]

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+ sac: 30...Rxb2 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Jun-09-16  Christoforus Polacco: The game is rather boring and typical for Hypermodern but the endgame is fantastic.
Apr-10-17
Premium Chessgames Member
  offramp: My suggestion of The Big Slab of Murrhine of Poznan has not been adopted.
Apr-10-17
Premium Chessgames Member
  al wazir: 37. a3 is another idea for white. If black plays 37...Qxa5 or 37...Qc3, then 38. Rb3, and black can't stop a subsequent Rf3. White has built a semi-fortress.

If black tries to trade his ♕ for the ♖ and scoop up white's K-side ♙s, white's a-♙ will promote first.

Apr-10-17  donehung: This reminds me of Ortega v Sans
Apr-10-17  devere: This exquisite endgame combination is perhaps the most famous in the history of chess, and I have read that seeing it inspired the late world champion Tigran Petrosian to devote his life to the game.

Of course there has been extensive speculation whether both this game and it's twin, Ortueta vs Sanz, are genuine, and if so how such an astonishing coincidence can even be comprehended. Perhaps some explanation involving Jungs's collective unconscious might be appropriate.

Apr-10-17  devere: The twin game:
M Ortueta Esteban vs J Sanz, 1933
Apr-10-17  devere: And Tim Krabbe's main article on this:
https://timkr.home.xs4all.nl/chess/...
Apr-10-17  algete: is very similar game Ortueta-Sanz (1933) M Ortueta Esteban vs J Sanz, 1933
Apr-10-17
Premium Chessgames Member
  Once: An old friend, but a good one all the same. Those rampant pawns make quite a sight.
Apr-10-17  Ratt Boy: And <this>, students, is why doubled-isolated pawns are <always> a plus.
Apr-10-17  7he5haman: <al wazir> I was going to say the same thing!
Apr-10-17  catlover: <devere> Thanks for posting the fascinating background about this game.

As a friend of mine used to say, "If it's not true, it should be true."

Apr-10-17
Premium Chessgames Member
  ChessHigherCat: <Christoforus Polacco: The game is rather boring and typical for Hypermodern but the endgame is fantastic.> My theory is that two drunk patzers were playing in the bar "The Pearl" at 4 AM when two bored kibbitzers knocked them out, slid them under the table and discreetly continued their game at move 40.
Apr-10-17  devere: <al wazir: 37. a3 is another idea for white. If black plays 37...Qxa5 or 37...Qc3, then 38. Rb3, and black can't stop a subsequent Rf3. White has built a semi-fortress.> 37.a3 Qxa5 38.Rb3 Qh5+ 39.Kg1 Qd1+ wins the White rook.
Apr-10-17  eaglewing: <al wazir> and <devere>: The idea is correct. 37. a3 and the white a-pawn are not needed. One possibility is directly 37. Rb3 followed by Qh5+ 38. Kg1 Qxa5 39. f5 Qxa2 40. Kh2. The rook can switch between f3 and f4. If Black controls f6 only once, White can check, if f5-f6 is playable. I do not think there is a way to break the fortress. Remark: King and Queen vs Kh2, Pg2 and Rf3 is a known fortress, which this defense is based upon.
Apr-10-17
Premium Chessgames Member
  morfishine: The original play on word was 'A pair of Ski's'

And it was all downhill from there

*****

Apr-10-17  devere: <eaglewing: The idea is correct. 37. a3 and the white a-pawn are not needed. One possibility is directly 37. Rb3 followed by Qh5+ 38. Kg1 Qxa5 39. f5 Qxa2 40. Kh2.> followed by 40...QxRb3!. Tactical details matter!

I think the line you may be looking for is 37.Nc6! Qxc6 38.f5! Qd5?! 39.Rf4! Qxa2 40.f6! which looks like a draw to me.


click for larger view

However better for Black is 38...Qf6! 39.Rf4 Kg8.


click for larger view

Black's winning plan is to block the f-pawn with his king and then win the a-pawn by zugzwang and then trade down to a winning king and pawn ending. One possible line is 40.a4 Kf7 41.Rf3 Qa1 42.Rf4 Kf6 43.a5 Qxa5 44.Rf3 Qe5 and it seems to me that black is winning.


click for larger view

But perhaps there is an improvement for White!

Apr-10-17
Premium Chessgames Member
  thegoodanarchist: <offramp: My suggestion of The Big Slab of Murrhine of Poznan has not been adopted.>

It may never be.

Apr-10-17  eaglewing: <devere>: Sorry, I mistyped. I intended 37. Rb3 Qh5+ 38. Kg1 Qxa5 39. Rf3 Qxa2 40. f5 and one of the next moves would be Kh2.
Apr-10-17  eaglewing: <devere>: Regarding your winning plan, yes, something like that gives a small doubt about the safety of the fortress.

However, Black needs to take the a-pawn immediately. For instance, your 'possible line' allows instead of 42. Rf4 the move 42. f6. gf leads to Rf4-Rh4-Rf4 ... and trading something is not possible, there is still a pawn on a4. Even in your suggested end position after 44. ... Qe5 (and a-pawn gone) White does not need to play Rf4, when Qxf4 indeed looks good. Rf1 is fine, because Qxf5 is not good enough. If you trade down, you need to get for the Queen the Rook and two Pawns (or at least the position to immediately force a second pawn win). Trading on f5 is followed by Kh3 controlling g4 and it should be a draw.

Apr-10-17  devere: <eaglewing:> If white plays f6 black has to advance the g pawn, not play gxf6 which draws. That is why the black king must be at least on f7 before the queen on f6 moves. So far it looks like a win for black to me, but it is by a narrow margin. I test my ideas in Stockfish 7 64.
Apr-10-17  eaglewing: <devere>: Your moves 37.Nc6! Qxc6 38.f5! are really good, it is the fastest way to reposition. It looks like White can hold onto the a-pawn or can push f5-f6 trading f vs g and Black's hopes are gone.
Apr-12-17
Premium Chessgames Member
  al wazir: <devere: 37.a3 Qxa5 38.Rb3 Qh5+ 39.Kg1 Qd1+>. I can't believe I overlooked that!

But it's very easy to believe that I missed the alternative lines you and <eaglewing> found. Thanks.

Feb-12-18
Premium Chessgames Member
  malt: Good endgame 33.Re6? cb2 34.Re1 c3
Feb-12-18  moony70: 27 Rb7?? The big blunder imho. It was better 27 Rd8 Bd8 28 Ne4... And white is better now
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