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Lev Polugaevsky vs Helmut Pfleger
Buenos Aires Olympiad (1978), Buenos Aires ARG, rd 9, Nov-03
Tarrasch Defense: Classical. Advance Variation (D34)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
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May-16-16
Premium Chessgames Member
  tpstar: Father Pfleger
Jan-20-19  weisyschwarz: Pulling the Polug
Aug-06-21  mel gibson: I thought 20... BxB but that is wrong.

Stockfish 14 agrees with the text.

20... Rxd5

(20. .. Rxd5 (♖d8xd5 ♖d1xd5 c4xb3 ♖c1xc8 ♗e6xc8 ♕h5-d1 ♗c8-h3 ♘a4-c3 b3xa2 ♖d5-d3 ♕b4-c4 ♘c3xa2 ♕c4xa2 g3-g4 h7-h5 g4xh5 ♕a2-c4 e3-e4 ♗h3-e6 ♖d3-d8 ♕c4-c5 ♕d1-d2 ♔g8-h7 ♕d2-e3 ♕c5-b4 ♕e3-d2 ♕b4xd2 ♖d8xd2 a7-a5 ♖d2-d8 ♗f8-h6 ♔g1-f1 a5-a4 ♖d8-a8 ♗e6-b3 ♔f1-e2 ♗h6-c1 ♔e2-d3 ♗c1-b2 ♖a8-b8 a4-a3 ♖b8xb3 a3-a2 ♖b3xb2 a2-a1♕ ♖b2-d2 ♕a1-e5 f2-f3 f6-f5 e4xf5 ♕e5xf5+ ♔d3-e2 ♔h7-h6 ♖d2-d4 ♕f5-c2+ ♖d4-d2 ♕c2-c5 ♖d2-d7 ♔h6xh5 ♔e2-d3 ♔h5-h4 ♖d7-d4+ ♔h4-h3) +4.29/46 815)

score for Black +4.29 depth 46.

Aug-06-21  Brenin: After the exchange sac 20 ... Rxd5 21 Rxd5 cxb3 22 Rxc8 Bxc8 23 axb3 Bg4 24 Qh4 Qe1+ 25 Kg2 Be2 26 g4 Qf1+ 27 Kg3 Qg1+ 28 Kf4 Qg2 (all more or less forced for each side) Black threatens Qf3 mate and thus picks up the R on d5, leaving him a piece ahead. Black can set a trap with 29 Rg5+ fxg5 30 Qxg5+ Bg7 31 Qe8+ Bf8 32 Qg5+ drawing, but 29 ... Kh8 30 Kf5 fxg5 avoids the checks and ensures a win.
Aug-06-21  Walter Glattke: A) 21.-Bxd5 22.Rxd5 Rxd5 23.Qxd5 c3 24.Qd3 +-
B) 21.-c3 22.Bxe6 Rxd1+ 23.Rxd1 fxe6 24.Rd7!? Be7 25.Qd1 Qg4 26. Nb2 Ba3 -+ C) 21.-Rxd5 22.Rxd5 cxb3 23.Rxc8+ Bxc8 24.axb3 (24.Rd8? Qe1+ 25.Kg2 Bb7+) Bg4 25.Qh4 (25.Rb5? Qe1+) Qe1+ 26.Kg2 Be2 27.g4 (27.Rg5+ Kh8!) Qg1+ 28.Kf4 Qg2 28.Qxf6 Qxf2+!? (28.-Qxd5 29.Qxg5+ Qxg5 30.Kxg5 Bd1 -++)
Aug-06-21  drollere: the black QB isn't going anywhere, otherwise it's 21. Qxf7+. so the best i could find was 20. .. Rxd5 (attacking the Q), 21. Rxd5 Bxd5, 22. Qxd5 c3, 23. Nxc3 Rxc3, 24. Rxc3 Qxc3, and black has the KB for 2 pawns. i looked at 22. .. cxb3, 23. Rxc8 b2, 24. Nxb2 Qxb2 and white is up the exchange. not only did i miss 21. .. cxb3 i didn't understand it when i saw it. the Q+B attack starting with 23. .. Bg4 seemed wildly speculative with neither white's R or Q hanging. amazing pfleger worked it out over the board.
Aug-06-21
Premium Chessgames Member
  al wazir: I went with 20...Bxd5 21. Rxd5 cxb3, which seems to win a piece: 22. Rxd8 (22. Rxc8 Rxc8 23. Ra5 bxa2 or 23. Nb2 bxa2) Rxc1+ 23. Kg2 Qxa4 24. Qh6 Qb4. In several lines black promotes the b-♙.
Aug-06-21  Walter Glattke: Sorry, all moves above one move earlier, I struggled in the nightshift today.
Aug-06-21  Walter Glattke: Al wazir: 22.Rxd8 loses a piece, 22. Rxc8 Rxc8 23.axb3 -+
Aug-06-21  agb2002: Black has the bishop pair for a bishop, a knight and a pawn.

After 20... Rxd5 21.Rxd5 cxb3 Black threatens Rxc1+, Qxa4, bxa2:

A) 22.Rxc8 Bxc8 (22... bxa2 23.Rc1 and Black seems unable to recover the material)

A.1) 23.axb3 Bg4 24.Qh4 (24.Rg5+ fxg5 25.Qxg5+ Bg7 26.Qd8+ Qf8 is winning for Black; 24.Rd4 Qe1+ wins decisive material) 24... Bf3, with the double threat Qe1# and Bxd5, seems to win decisive material.

A.2) 23.Rd4 Qe1+ 24.Kg2 bxa2 25.Rg4+ (25.Q(R)d1 a1=Q wins) 25... Bxg4 26.Qxg4+ Kh8 27.Qc8 Qb4 28.Qc1 Qxa4 wins decisive material.

B) 22.Rdd1 Rxc1 23.Rxc1 bxa2 24.Nc3 Qxc3 wins decisive material (25.Rxc3 a1=Q+).

C) 22.Rcd1 Qxa4 23.axb3 Qxa3 - + [2b vs R].

Aug-06-21  agb2002: For some reason I thought that 24... Bf3 was quicker than 24... Qe1+ in my line A.1 and overlooked 25.Qxb4.
Aug-06-21  Stanco: I solved it but thought in my calculations I would play 23....Qe1+ followed with 24...Bb7 and capture the rook on e4, but that doesn't win. 23...Bg4 with boning from the back is the only approach that is correct.
Aug-06-21
Premium Chessgames Member
  perfidious: <Stanco.... 23...Bg4 with boning from the back is the only approach that is correct.>

Sounds like a nasty method indeed.

Aug-06-21
Premium Chessgames Member
  eternaloptimist: Ah I’ve seen this game before!! In fact I submitted it to be the GOTD over 5 years ago but unfortunately it never got picked for it.? The pun that I picked for it is “Pflebotomy”.

Well at least it got picked for the POTD today! The ppl who love CG’s puzzles deserve to see this brilliant game by GM Pfleger

Aug-06-21  GlennOliver: <eternaloptimist>: Ah I’ve seen this game before!! In fact I submitted it to be the GOTD over 5 years ago but unfortunately it never got picked for it.? The pun that I picked for it is “Pflebotomy”.

Very good.

Aug-06-21
Premium Chessgames Member
  chrisowen: Realms keyins rookie Rxd5 finish abridge axled its against quality keyins realms rookie tabacs cat op jewellery realms o keyins milks it whicker quicks keyons wrench wiggies frazzled its viz its bottoms keyins flush pj frilled its waggy nez its low i keyons linkum totadd cincher arrived its gi finish decides its for phantom its wides keyins gen its z toe its ar bow hi v Rxd5 tea!
Aug-06-21
Premium Chessgames Member
  chrisowen: Rd5 had Gateshead rite no?
Aug-06-21
Premium Chessgames Member
  chrisowen: No gobble up ground ever no?
Aug-06-21  Stanco: crag mound gateshead cling on cairny chime dew angled thee craig torr dew unto moor of tulach kissed against damsel fair at d5
Aug-06-21
Premium Chessgames Member
  chrisowen: Hang back up no?
Aug-06-21
Premium Chessgames Member
  chrisowen: Now cc won el bible ro sees or key
Aug-06-21  Andrew Chapman: 30.. Bg7 was dangerously attractive.
Aug-06-21
Premium Chessgames Member
  al wazir: <Walter Glattke:22. Rxc8 Rxc8 23.axb3>. You're right.

Now black has nothing. Thanks.

Aug-07-21
Premium Chessgames Member
  eternaloptimist: <GlennOliver> Thx!
Aug-07-21  RookFile: Bobby Fischer would have played 17. Nxc5 as a reflex action. Knight captures Bishop? Sold. The move is good for an advantage for white.
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