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Artur Chibukhchian vs Zviad Izoria
Batumi Open (2001), Batumi GEO, rd 4, Jun-29
Nimzo-Indian Defense: Kmoch Variation (E20)  ·  0-1

ANALYSIS [x]

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sac: 32...Qxg1+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
May-28-05  Whitehat1963: Beginner's puzzle after 32. Rb4.
May-25-20
Premium Chessgames Member
  Phony Benoni: Rather surprising there's not a mate in there some, and we have to settle for the exchange with 32...Qxg1+ 33.Kxg1 Ne2+, trusting the rooks will clean up afterward.
May-25-20  stacase: <Phony Benoni ...trusting the rooks will clean up afterward.>

And as one of those little sayings when you post says, the most difficult game to win is the "won" game.

May-25-20  Cheapo by the Dozen: The trick is to resist all temptations on g2.

And per the engine, White was not premature in resigning, although I'll admit it's not wholly obvious to me why.

May-25-20  Cheapo by the Dozen: But then, I'm the guy who, at age 11, managed to lose three "won" endgames at the same American Open.
May-25-20  agb2002: Black has a knight for a bishop.

White threatens Rxd4 and Qxf4.

Black has a won ending after 32... Qxg1+ 33.Kxg1 Ne2+ 34.Kf(h)2 Nxg3 35.Kxg3 Rxg2+ 36.Kf4 Rb2.

May-25-20
Premium Chessgames Member
  scormus: Monday, so it must be 32.... Qxg1+.
May-25-20  saturn2: 32..Qxg1+ 33. Kxg1 Ne2+ 34. Kh2 Nxg3 35. Kxg3 wins pawn and exchange.

Black can later on exchange rooks by
35...Rxg2+ 36. Kf4 Rh2 37. Kg4 Rcg2+ 38. Kf4 Rxh- 4

May-25-20  Brenin: I spent a minute or three, looking for a mate, before deciding that the game line was the best, and was sufficient for a win. White was already in some trouble, but the pawn grab 26 Bxb7 was negligent: a defensive move, such as f4 or Qe1, was needed. Later, 32 Rb4 was fatal: 32 Be4 Ne2 35 Qb8+ Kg7 36 h5 would have allowed White some counterchances.
May-25-20
Premium Chessgames Member
  OhioChessFan: A mere 15 years to the week later, <Whitehat's> idea was implemented.
May-25-20  AlicesKnight: Looked at g2 and then saw g1 was the answer, as per game.
May-25-20
Premium Chessgames Member
  chrisowen: Mage lecture tributary g1 no?
May-25-20  zb2cr: Black gets a winning edge in material with 32. ... Qxg1+; 33. Kxg1, Ne2+; 34. Kh2, Nxg3; 35. Kxg3, Rxg2+ and Black is up by the exchange and a Pawn.
May-25-20  mel gibson: That was easy but could it be converted into a win? After all it's 2 black Rooks versus a Rook & a Bishop.

Stockfish 11 says yes:

2... Qxg1+

(32. .. Qxg1+ (♕d4xg1+ ♔h1xg1 ♘f4-e2+ ♔g1-f2 ♘e2xg3+ ♔f2xg3 ♖d2xg2+ ♔g3-f4 ♖c2-b2 ♗b7-a6 ♖b2xb4+ a3xb4 ♖g2-b2 b4-b5 ♖b2-b4+ ♔f4-e3 ♖b4xh4 ♗a6-b7 ♖h4-b4 ♗b7-c6 h7-h5 f3-f4 ♔g8-g7 ♔e3-f3 ♔g7-f6 ♔f3-e3 ♖b4-c4 ♗c6-d5 ♖c4-c5 ♗d5-c6 ♖c5-c3+ ♔e3-d4 ♖c3-g3 ♔d4-d5 h5-h4 ♔d5-d6 h4-h3 ♔d6-c7 ♖g3-c3 ♔c7-b8 h3-h2 ♗c6-g2 ♖c3-c5 ♔b8xa7 ♖c5xb5) +12.42/41 191)

score for Black +12.42 depth 41

May-25-20
Premium Chessgames Member
  chrisowen: Runnings now yes ladder no wolf?
May-25-20  TheaN: The solution is the rather straightforward <32....Qxg1+ 33.Kxg1 Ne2+ -+>, but extra points for <34.Kh2 Nxg3 35.Kxg3 Rxg2 36.Kf4 Rb2 -+> which forces a rook trade and therefore the game; if White would be able to keep the rook he'd be able to set up some kind of (albeit futile) counterattack.
May-25-20  Predrag3141: White seemed oblivious to the piece activity he was allowing.

For example, the retreat 15 Bd3? to preserve the two bishops dropped a little over a half pawn, according to Stockfish.

Another example was the losing move: 26 Bxb7, allowing 26 … Rd2. In that move pair, Black's evaluation went up about 3 pawns.

May-25-20
Premium Chessgames Member
  chrisowen: Go figure cadalive now?
May-25-20  Predrag3141: <TheaN> After 33 … Ne2 34 Kh2 Nxg3 35 Kxg3 Rxg2 36 Kf4, 36 … Rb2 is a nice simplification. But Stockfish considers 36 … Rh2 a close second, and actually evaluates it as better until prompted with 36 … Rb2.
May-25-20  Nullifidian: Temporary queen sac with 32... ♕xg1+ 33. ♔g1 and then 33... ♘e2+ forks the king and queen. The only way white can get something out of the wreckage is by playing 34. ♔h2 ♘xg3 35. ♔xg3, but then black responds with 35... ♖xg2+ and white will have three isolated pawns against black's strong pawn chain, an undefendable h-pawn, and be down the exchange and a pawn. I would be very happy playing this as black.
May-25-20  TheaN: <Predrag3141: <TheaN> After 33 … Ne2 34 Kh2 Nxg3 35 Kxg3 Rxg2 36 Kf4, 36 … Rb2 is a nice simplification. But Stockfish considers 36 … Rh2 a close second, and actually evaluates it as better until prompted with 36 … Rb2.>

Doesn't the Rh2 line eventually lead to Rb2 as well? It's these semi-forcing lines that engines can over evaluate on first glance 'h4 is in, White has to do something, so it's good'.

SF9 gives 37.Ke5 Rc5+ 38.Kd6 Ra5 which is a unique line (after Ke5 Black can still revert to Rb2). Black wins another pawn but the White king's active and the rook still otb. I prefer the simplification.

May-25-20  Damenlaeuferbauer: After long pondering and playing with his orange hat, my old Georgian friend Zviad, who was still 17 years young, finally found the winning of the exchange with 32.-,Qxg1+! 33. Kxg1,Ne2+ 34.Kh2/Kf2,Nxg3 35.Kxg3,Rxg2+ 36.Kf4/Kh3,Rb2 -+. This is how to play the Nimzo Indian with the black pieces against the dangerous 4.f3 variation.
May-25-20  Pedro Fernandez: There is not forced mate here. All the moves are practically trivial.
May-25-20  Pedro Fernandez: 32.Be4, mentioned by <Chris>, it is a lot better but the white saves it neither, given the pyrrhic white position.

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