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Efim Bogoljubov vs Aron Nimzowitsch
Breslau (1925), Breslau GER, rd 8, Jul-28
Nimzo-Indian Defense: Three Knights Variation (E21)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Apr-09-05  nikolaas: Couldn' figure this one out, so I'll need help. Why not 27....Rxg3?
Apr-09-05
Premium Chessgames Member
  paulalbert: Certainly Rd7ch. If K goes back, then Rd8ch wins exchange. If Ke6, then possibly Rd6ch, followed by Rxb7, and then I think white can develop some threats to K, but I'm not strong enough to work out all variations and don't have chess program on computer, but I think these are the ideas and why Black played Bc8 to keep the R out of d7. Paul Albert
Mar-04-19
Premium Chessgames Member
  keypusher: An odd game. Position after 27.Rhd1:


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SF unhesitatingly goes for 27....Rxg3, with an 0.00 evaluation after 28.Rd7+ Ke6 29.Rxb7 (surely they both couldn't have missed that 29.e4 loses to ...Bxe4?) 29....Rxg2 30.e4 Rc8 31.Rxb6+ Kf5 or 31.Rdd7 Rg3. But it's a tough, calculation-heavy line, and you can imagine Nimzowitsch hesitating to go into it, particularly if he was in time trouble. But the move he chose was much worse.

Bogoljubov's position looked really good coming out of the opening, so it's natural to wonder whether he screwed up somewhere. And it appears that he did -- they both did, in fact. After 24.Rd2:


click for larger view

White is definitely better, but Black is still in the game after 24....Ne6 (+1.16 at 40 ply). Instead Nimzowitsch tried to free himself with 24....g5??, but Bogoljubov could have gotten an overwhelming advantage with 25.Bf5 (threatening Rhd1 and Rd7+). After 25....Ne6 26.Bxe6 Kxe6 27.Rhd1+-, it's sort of similar to the position that occurred in the game after 27....Bc8?, except that Black has no counterplay at all (27....Bc8 28.Rd6+ Kf7 29.Rxb6 Rd8 30.Rd5!).

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