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Albert Charles Chow vs Varuzhan Akobian
Chicago Spring Invitational (2005), Chicago USA, rd 8, Apr-19
Nimzo-Indian Defense: Classical Variation. Keres Defense (E32)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Sep-15-21  Brenin: 28 ... Rb1+ 29 Kxb1 Na3+ 30 Kb2 (30 Kc1 Rxc2+) Rxc2+ 31 Kxa3 exd4 wins the exchange, and the game since White can't stop one of the a- and d-pawns from promoting without giving up his N.
Sep-15-21  mel gibson: I saw that but I wasn't sure.

Stockfish 14 agrees with the text:

28... Rb1+

(28. .. Rb1+ (♖b4-b1+ ♔c1xb1 ♘c4-a3+
♔b1-a2 ♖c8xc2+ ♔a2xa3 e5xd4 ♔a3xa4 d4-d3 ♔a4-b3 ♖c2-c1 ♘d5-e3 d3-d2 ♘e3-d1 ♔g8-f8 ♘d1-e3 h7-h5 g2-g3 ♔f8-e7 f3-f4 ♔e7-d6 ♔b3-b4 ♔d6-c6 h2-h3 ♔c6-d7 ♔b4-b3 ♔d7-d6 ♔b3-b4 ♔d6-c6 g3-g4 h5-h4 ♘e3-d1 ♔c6-d7 ♘d1-b2 ♖c1-b1 ♔b4-c3 ♖b1xb2 ♔c3xb2 d2-d1♕ ♔b2-a3 ♕d1-c1+ ♔a3-b4) +8.21/34 184)

score for Black +8.21 depth 34.

Sep-15-21
Premium Chessgames Member
  FSR: 28...Rb1+ 29.Kxb1 Na3+ 30.Ka1 (letting the rook take with check, thereby avoiding the Ne7+ fork, is much worse) Nxc2+ 31.Kb2 Rb8+! 32.Kxc2 exd4 must win for Black. Or 31.Ka2 exd4 32.Ne7+ Kf8 33.Nxc8 and Black's two passed pawns must win.
Sep-15-21  Cheapo by the Dozen: Forks a-plenty. Black has 3 pieces in various degrees of peril, while White only has one. Straightforward simplification would probably lead to a position that maintained the balance of piece materials, and not go so well for Black in the matter of pawns.

However, the forcing moves in the game -- also fork-based -- leave Black up the exchange, and also doing a little better pawn-wise than in the other lines I looked at. The important part of that is "up the exchange", since White's knight has great difficulty returned from f6 to inhibit the d-pawn.

Sep-15-21
Premium Chessgames Member
  agb2002: Black is one pawn up.

White threatens Nxb4 and Ne7+.

The first idea that comes to mind is 28... Rb1+ 29.Kxb1 Na3+:

A) 30.Kb2 Rxc2+ 31.Kxa3 exd4 wins decisive material.

B) 30.Kc1 Rxc2+ 31.Kd1 exd4 is even worse for White.

C) 30.Ka2 Rxc2 31.Kxa3 exd4 as in A.

D) 30.Ka1 Nxc2+ 31.Ka2 (31.Kb2 Rb8+ 32.Kxc2 exd4 as in A) 31... exd4 32.Ne7+ Kf8 33.Nxc8 d3 34.Kb1 (34.Kb2 a3+ 35.Kb1(3) a2 36.Kxa2 d2 wins) 34... a3 and either the a-pawn or the d-pawn promotes.

Sep-15-21  landshark: Got it all the way through the final move - 32.... Kh8 giving W no mercy as his knight has no checks to help find it's way back to do anything about B's runaway d-pawn.
Sep-15-21
Premium Chessgames Member
  al wazir: 27. Nd3 seems to hold onto everything.

If 27...Rb1+, then 28. Kxb1 Na3+ 29. Ka2 Rxc2+ 30. Kxa3 Rd2, and white is a piece up.

After 27...Nxd6 28. Nxb4 Ra8 29. Kb2 a3+ 30. Kb3, I don't think black can hang onto the extra ♙.

Sep-15-21
Premium Chessgames Member
  Teyss: Nothing to add to above. One day I'll log in to CG just after midnight UTC to be the first to post.
In the end 32...Kh8 is safer in human mode but actually Kf8 or Kg7 don't change much because the WN needs to go to e3 via d5 or g4 to control the d1 promotion square.
Sep-15-21
Premium Chessgames Member
  chrisowen: Favours like finish Rb1 flubb it is a bridge livid i bit on vain favours like finish packet bints hours roof cv juiced it is die it mellow pong dive it winny it is kaputz nay it is bold how it cares i vant account value guv cards ha foot it is the bill embargo fade on deaf it ears i vant space it owe vain cd feds bode on well bit creed vent brothers in arms volume normal it is calm good vain down it badass i vant on whats up doc hang on yes vant it sexual baritone vent it barber of seville space it oy within melt Rb1 black;
Sep-15-21
Premium Chessgames Member
  chrisowen: da ghoul I murk bar no crazy black no?
Sep-15-21
Premium Chessgames Member
  chrisowen: Wasteland it set elly Rb1 no?
Sep-15-21  Brenin: <al wazir>: If 27 Nd3 then Rb1+ 28 Kxb1 Na3+ 29 Ka2 Nxc2 (not Rxc2+ 30 Kxa3) leaves Black up by a passed a-pawn. It will eventually fall, but in the meantime Black should be able to do enough damage to White's K-side pawns to have good winning chances.
Sep-15-21
Premium Chessgames Member
  billbarstool: That was easy.
Sep-15-21  TheBish: <chrisowen: ...whats up doc hang on yes vant it sexual baritone vent it barber of seville space it...>

What's a sexual baritone? Was he in The Barber of Seville? I think this site is getting too racy. I came here for the chess!

Sep-15-21
Premium Chessgames Member
  raymondhow: I followed all the moves until the last, where I carelessly chose 32...Kg7 instead of 32...Kh8. My move allows the white knight to hop back to a better defensive position. Not likely to change the outcome though, so I'll call it a tainted solve.

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