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Vladimir M Liberzon vs Bent Larsen
Biel Interzonal (1976), Biel SUI, rd 11, Jul-25
Sicilian Defense: Paulsen. Bastrikov Variation (B47)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-09-06  Rocafella: Why didn't white play 33.Rb3
Sep-09-06  Nostrils: I was thinking Rxd3 then a3 on the second move, if white (in the game line) had played 33 Rb5 this would transpose. So what happens if white chooses 33 Rb5 ? There must be a reason to play a3 first.
Sep-09-06  DexterGordon: <Rocafella>, if 33.Rb3 then 33...Rxd3 34.Rxd3 c4.

<Nostrils>, 33.Rb5 does seem better than the line played in the game. See <RandomVisitor's> line #2 above for a possible Black continuation.

Sep-09-06  RandomVisitor: <NateDawg>The symbols you see are actually and in another font. The Chessbase font does not translate over to the chessgames forum, so we get the weird symbols. I will try to remember to replace these symbols when I post positions.
Sep-09-06  RandomVisitor: 1: Vladimir M Liberzon - Bent Larsen, Biel Interzonal 1976


click for larger view

Analysis by Rybka 2.1c mp: 25 ply complete

1. (-1.03): 32...a3 33.Rbc2 Rxd3 34.Rxd3 Rxb6 35.Bc1 Bxd3 36.Qxd3 Rb4 37.h3 Rd4 38.Qf3 Qa4 39.Rc3

2. (-0.90): 32...Rxd3 33.Rxd3 a3 34.Rb5 Bxd3 35.Qxd3 Qc6 36.Qb1 c4 37.Bc3 Rb7 38.h4 Bc5 39.Kh2

3. (-0.60): 32...Bd5 33.h4 a3 34.Rbc2 Rxb6 35.Bc1 Bxh4 36.Kh2 Rc6 37.Rxa3 Qb7 38.Be3 Be7 39.Rac3

(, x 09.09.2006)

Sep-09-06  RandomVisitor: White's problems seem to start with 28.b6.

Better perhaps were:

1. = (0.25): 28.Rcb2 Be4 29.Rc1 Rd8 30.Kg1 Rd7 31.Ba5 Ra8 32.Be1 Rad8 33.b6 Bd3 34.Bxd3 Rxd3

2. = (0.25): 28.Rbb2 Be4 29.Rc1 Rd8 30.Kg1 Rd7 31.Ba5 Ra8 32.Be1 Rad8 33.b6 Bd3 34.Bxd3 Rxd3

Sep-09-06  KOCCMOHAYT: nice, nice choice for today
Sep-09-06  artemis: This puzzle is also seen in Gaprindashvili's Imagination in Chess, an excellent book for players looking to become a stronger tactician (it is aimed for players at 2000 strength, but as an 1800 strength player, I find that it is not too hard). When I saw it today, I got the move immediately, but it took a long time the first time I saw the position.

The basic tactic played here is the exchange sacrifice on d3. If one simply calculates with Rxd3 first, though, you should find that it is insufficient (it is still ok, but not great). Gaprindashvili points out that frequently, an amateur will see the right idea, but, upon calculating it to the end and finding that it is not good, they give it up, instead of considering why it didnt work.

Sep-09-06  scorpius: This was a tough one, the funny part is that I was considering buying Imagination in Chess a few weeks ago ;)
Sep-09-06  Rocafella: <Dexter Gordon>, after 34.c4 doesn't 35.b7 save the rooks? E.g 35.b7 Rxb7 36.Rxb7 Qxb7 37.Rd4, or if black declines the pawn 35.b7 Qa7 36.Be3 Bc5 37.Bxc5 Qxc5 38.Rcd3 (35.Qa6 36.Rdc3 cxb3 37.Rc8+ wins the queen, if not cxb3 the c4 pawn hangs)
Sep-09-06
Premium Chessgames Member
  Gypsy: I went the Rxd3 a3 c4 order of moves.
Sep-09-06  brainzugzwang: <Dexter Gordon> Or, after 34.c4, how about the simple Rxd8+ followed by moving the b3 rook, perhaps to c3 and giving up the b-pawn for Black's c4 pawn. Still a messy position for White, but better than being a rook down ...
Sep-09-06  alfilbueno: Nice puzzle. After thinking for fifteen minutes or so, I got the right idea 32 ...a3 and saw the basic lines, although I considered the simple 37 ...Rb2 instead of the brilliancy Bxa2!

But I was not sure of having found the solution, because I did not see a clear winning line after 33 Rb5.

Sep-09-06  Rocafella: <brainzugzwang> I did some analysis, don't tell me I didn't need to :)
Sep-09-06
Premium Chessgames Member
  ajk68: If someone understands this opening, can they please explain 10...d5? It would seem Bxc3 nets a pawn and leaves white with a horrendous pawn structure. White may be up on development at that point, but there doesn't appear to be any immediate way to exploit it.
Sep-09-06  crwynn: <If someone understands this opening, can they please explain 10...d5? It would seem Bxc3 nets a pawn and leaves white with a horrendous pawn structure. White may be up on development at that point, but there doesn't appear to be any immediate way to exploit it.>

I think he was worried about 10...Bxc3 11.bc Nxe4 12.Qd4 Nf6 13.Ba3, and Black will have a rough time castling. Also White has the bishop pair of course.

Sep-09-06
Premium Chessgames Member
  kevin86: Silly me! I was looking for a rook or queen move-not a quiet pawn push that starts to scatter white's forces. In the end,white is helpless against guarding his pieces,defending his back line against mate,and stopping the black passed pawn.
Sep-09-06  AxelBoldt: What happens after 33.Rb5?
Sep-09-06  NateDawg: <AxelBoldt> 33. ♖b5 ♗xd3 34. ♖xd3 ♕a6! 35. ♖bb3 (35. ♖db3 ♖xb6 and White's rook as pinned) ♖xd3 36. ♖xd3 ♖xb6 and Black's passed c-pawn leads to victory.
Sep-09-06  lvlaple: And this, this is the way puzzles should be.
Sep-09-06  Tariqov: <brainzugzwang> In your line, 34.Rxd8 is illegal, there is nothing on d8 after Rxd3!
Sep-10-06  Rocafella: <Tariqov> Does you agree that b7 saves the rooks then, or does anyone, or am I totally off?
Sep-10-06
Premium Chessgames Member
  Willem Wallekers: <Tariqov> Does you agree that b7 saves the rooks then, or does anyone, or am I totally off?>

How about 35. b7 Bxb7? (theatening Bxg2+)

Sep-10-06  Rocafella: Bxb7 Rxb7 and then moving the rook, leaves white better than the text I feel
Sep-13-06  patzer2: With the puzzle solution 32...a3! and the
followup 33...Rxd3!, Larsen begins a combination to use a pawn deflection and a pin to eliminate White's dangerous passer while establishing a strong passed pawn of his own.
search thread:   
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