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Nikolai V Krogius vs David Bronstein
USSR Championship (1971), Leningrad URS, rd 21, Oct-16
Alekhine Defense: Two Pawn Attack (B02)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Dec-05-03  pawntificator: They shouldn't have given up yet.

I'm not sure if it is correct, but after 3...Nb4 I like 4. a3 followed by 5 b4. It just looks intimidating, all that space in white's control, black all cramped. Not for long, I know.

Nov-21-10  Everett: Yes, some interesting play here!

Black must have avoided 5..Bxe6 due to the move 6.Qb3, but I think black could play 6..a5 7.a3 N4a6 8.Qxb7 Nd7 when I think black is fine, save that White can try 9.c5, when the best for black seems to give up two pawns for a knight after 9..Naxc5 10.dxc5 Nxc5 11.Bb5+ with interesting play... for humans at least.

Nov-26-10  micartouse: 4 ... d6 looks too provocative. Maybe Krogius should have taken the piece!
Nov-26-10  Everett: Micartouse, what is the line that wins a piece for white?
Nov-26-10  micartouse: <Everett> I think after 5. Qa4+ N~c6 6. d5 black will have to give a piece up one way or another - I'm not sure what type of sac Black was intending. This seems a little 'in your face' from Bronstein since he could have played any 4th move. But it worked!
Nov-26-10  micartouse: Why does ... N8c6 save the piece? Not disagreeing, I just don't see it.
Nov-26-10  TheRavenPK: lol, I am sorry :D it doesn't, or I just don't see it too.. It is too late here /1,30 AM/ and I am probably too tired.. Sorry for confusion :)
Nov-26-10
Premium Chessgames Member
  Eyal: Chesslabís database contains a game from 2009 between a 1700 and a 1550 player that went: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb4 5.Qa4+ N4c6 6.d5 Bd7 7.dxc6 Bxc6 and eventually White converted his material advantage and won rather easily. But when a 1550 plays in the opening like that, itís much easier to assume it was simply a bad blunderÖ
Nov-26-10  Everett: <Eyal> <: Chesslabís database contains a game from 2009 between a 1700 and a 1550 player that went: 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb4 5.Qa4+ N4c6 6.d5> ..perhaps black's best is dxe5 7.dxc6 Nxc6 with two pawns for the piece and a slight lead in development.
Nov-26-10  Everett: Well, let's look at the line 5.Qa4+ N8c6 6.d5 b5!? and white has two options:

7.Qxb5 and black can consider Nc2+, Rb8 or Ba6
7.cxb5 and black can play ...Nd4!?

I have not analyzed this deeply <I'm at a Tibetan museum listening to Fela Kuti right now...> but some of these lines look interesting.

Nov-27-10  Everett: After looking it through... it seems black is fine after:

5.Qa4+ N8c6 6.d5 b5!? 7.Qxb5? Nc2+.

White seems better playing 7.cxb5 Nd4 8.Na3 when black can consider the sequence 8..c5!? 9.bxc6ep a5 or, my preference 8..dxe5 9.Qxb4 e6 with rapid development and a pawn for the piece. The comps say it's roughly +1.5, but for human club play this could provide some fun.

BTW, an analogous game from Bronstein here:
Vasiukov vs Bronstein, 1973

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