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Alexander Izvozchikov vs Evgeny Sveshnikov
Spartakiada URS (1975), ?
Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation (B33)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Mar-01-22  Brenin: Black wins material (at least a piece) by 32 ... Rxc2+ 33 Kxc2 (33 Ke3 Nf5+ protecting d6 against Qd6+, then Rxh2) Qb1+, e.g. 34 Kd2 Rd1+, or 34 Kc3 Rc1+, or 34 Kb3 Qxd3+.
Mar-01-22  mel gibson: The first 2 plies were obvious -
then it's a King hunt but White can still
provide many checks to slow the finish.

Stockfish 14 says Black wins, mate in 27.

32... Rxc2+

(32. .. Rxc2+ (♖c6xc2+ ♔d2xc2 ♕a2-b1+ ♔c2-b3 ♕b1xd3+ ♔b3-a2 ♘e7-d5 ♕b4-d6+ ♔e6-f5 ♕d6-d7+ ♔f5-e4 ♕d7-a4+ ♔e4xe5 ♖h2-e2+ ♔e5-f6 ♖e2-f2+ ♔f6-g6 ♖f2-c2 ♔g6-h5 ♕a4-c4 ♘d5-b4+ ♕c4xb4 ♕d3xc2 ♕b4-b5+ ♔h5xh4 ♕b5-b4+ ♖g1-g4 ♕b4-e7+ ♔h4-g3 ♕e7-a3+ ♔g3-h2 ♕a3-d6+ ♔h2-g2 ♕d6-d5+ ♔g2-g1 ♕d5-b3 ♖g4-a4+ ♕b3xa4 ♕c2xa4+ ♔a2-b1 ♔g1-f2 b2-b3 ♕a4xb3+ ♔b1-a1 ♕b3-b4 ♔a1-a2 ♔f2-e2 ♔a2-a1 ♔e2-d3 ♔a1-a2 ♔d3-c2 ♔a2-a1 ♕b4-a3+) +M27/56 1454)

mate in 27.

Mar-01-22  Brenin: <mel gibson>: After 32 ... Rxc2+ 33 Kxc2 Qb1+ 34 Kb3 Qxd3+ 35 Ka2, SF's 35 ... Nd5 is very much a machine move, allowing the dangerous-looking 36 Qd6+ Kf5 with Black's K very exposed to checks. I think most humans would play 35 ... Qd5+, e.g. 36 Ka3 Ra1 mate, or 36 Qb3 Ra1+ winning the Q, or 36 b3 Qa8+ 37 Qa4 (37 Kb2 Qa1+ 38 Kc2 Qa2+ wins the R) Qxa4+ 39 bxa4 Kxe5 with an easy endgame win.
Mar-01-22  SChesshevsky: Game seems a relatively early play in Sveshnikov's adaptation of the old Lasker-Pelikan. An interesting read would be his book "The Sicilian Pelikan" but think it's out of print.

However, the lesser known GM Gennady Timoshchenko, who also did early work on the opening (maybe with Sveshnikov?), does have a book available.

Book has a forward by Kasparov, who was coached/trained by Timoshchenko.

Mar-01-22
Premium Chessgames Member
  An Englishman: Good Evening: My favorite part of this game? The name of the opening. "Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation" falls so trippingly off the tongue.
Mar-01-22  stacase: Always accept your opponent's resignation.

Took a while to see 34. Kc3 Nd5+ forking the White King & Queen. White's other two choices for move 34 loses the Rook.

Mar-01-22  newzild: <Brenin:> <32 ... Rxc2+ 33 Ke3 Nf5+ protecting d6 against Qd6+, then Rxh2.>

Well done analysing a line declining the piece sac, but after 32...Rxc2+ 33. Ke3 Nf5+ 34. Ke4 Rxh2, White can still play 35. Rd6+ Ke7 (35...Nxd6 Qxd6#) 36. Ra6+, picking up the White queen.

Mar-01-22  saturn2: White allowed 27...Qxa2 +

27.a3 would have avoided the worst.

Mar-01-22
Premium Chessgames Member
  agb2002: Black is one pawn down.

White threatens Rd6+.

The black queen would like to go to b1 with check. This suggests Rd1+ and Rxc2+.

In the case of 32... Rxc2+:

A) 33.Kxc2 Qb1+

A.1) 34.Kd2 Qe1+ 35.Kc2 Qxb4 wins decisive material.

A.2) 34.Kc3 Rc1+ 35.Kd2 (35.Kb3 Qxd3+ wins the knight) 35... Rd1+

A.2.a) 36.Kc3 Qxd3#.

A.2.b) 36.Ke2 Qxd3+ 37.Kf2 Rf1+ 38.Kg2 Qf3#.

A.2.c) 36.Ke3 Qxd3+ 37.Kf4 (37.Kf2 as in A.2.b) 37... Rf1+ (or 37... Nd5+) and mate soon.

A.3) 34.Kb3 Qxd3+ wins the knight.

B) 33.Ke3 Nf5+ 34.Kf3 (else 34... Rc4+ wins) 34... Qf1+ 35.Ke4 Rg4#.

Mar-01-22  saturn2: I too loked at 32...Rd1 first but it loses.
Mar-01-22  saturn2: 2.32.. .Rd1+ 33.Kxd1 Qb1 34.Ke2 Qxc2 35.Rd2
Mar-01-22
Premium Chessgames Member
  Jabot: @newzild

I think that instead of 34...Rxh2 in your line black will play 34...Rc4+ which will win the white queen.

Mar-01-22
Premium Chessgames Member
  Dionysius1: Yay! Got it all the way through to winning the ♕
Mar-01-22  Brenin: <newzild>: Thank you. More accurate is 32 ... Rxc2+ 33 Ke3 Nf5+ 34 Kf3 (34 Ke4 or Kf4 lose the Q to 34 ... Rc4+) Rg3+ (<agb2002>'s 34 ... Qf1+ is not a legal move since the Black Q is on a2) 35 Ke4 or Kf4 Rc4+, winning the Q.
Mar-01-22
Premium Chessgames Member
  scormus: <Brenin .... machine move 35 .... Nd5> Definitely. Looking at the board straight off, it wasn't difficult to see that B would take a lasting initiative thanks to the opportunity of repeated +s with the Q /R, setting up devastating threats.

35 ... Nd5 would cede that initiative to W, allowing an uncomfortable sequence of +s. If instead, 35 ... Qd5+ then B retains control and can force Rs off and then eliminate the Pe5. e.g. 36 b3 Qa8+ 37 Qa4 Rg2+ etc. After that B is an N ahead and W has only the lone Q for a few more +s.

Mar-01-22  Cheapo by the Dozen: Three different skewer attacks FTW!

That's counting both game moves, plus the possible continuation

34 Kd2 Qe1

Mar-01-22
Premium Chessgames Member
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Mar-01-22
Premium Chessgames Member
  whiteshark: herever the white king flees on move 34, the Rd3 will always drop with check.
Mar-01-22  TheaN: <32....Rxc2+ 33.Kxc2> 33.Ke3 Nf5+ puts the White king in all sorts of firepower with a piece down, ie, 34.Kf3 Rg3+ 35.Kf4 Rc4+ -+. <33....Qb1+>.

Though it looks the Black queen is a bit off the grid, it's enough here. <34.Kc3> 34.Kd2 Rd1+ -+ (I saw 34....Qe1+ -+ which is fine also), 34.Kb3 Qxd3+ follows the main line one move earlier.

<34....Rc1+ 35.Kb3> Rc2 Qxc2+ -+ is ludicrous and Kd2 Rd1+ -+ leads to an earlier line. <35....Qxd3+> Black already reclaimed the piece but the onslaught isn't finished <36.Ka2 Qd5+ -+>. Ka3 Ra1#, Ka4 Ra1+ -+, Qb3 Ra1+ -+, b3 Qa7+ -+.

<mel gibson: The first 2 plies were obvious - then it's a King hunt but White can still provide many checks to slow the finish.>

Others have already mentioned it but this is why I'm having an issue with just blatant computer line posting without checking what's played.

No; Black would <never> allow a king hunt by White in this position. Not a 1200 player, not Carlsen. In the posted line 32....Rxc2+ 33.Kxc2 Qb1+ 34.Kb3 Qxd3+ 35.Ka2, pretty much all Black players would settle on <35....Qd5+> to keep initiative and trade off to an easy endgame.

Mar-01-22
Premium Chessgames Member
  dorsnikov: Actually, a tad easier than Monday's I feel.
Mar-01-22  Stanco: It is all forced. I calculated all the lines and I found a force mate in each of them, the longest one is mate in 11, the lines are as it follows: 32.Nd4+
A) 32...Kd7 33.Nf5+
A1) 33...Kc8 34 Ne7+ Kc7 35.Qb8#
A2) 33...Ke6 34 Ng7+ Kxe5 35.Qd4#
A3) 33...Ke8 34 Qe7#
A4) 33...Nd5 34 Rd5+ Ke6 35 Rd6+
A4A) 35...Kxe5 36 Qd4+ Kxf5 37 Rf2#
A4B) 35...Kxf5 36 Rf2+ Ke5 37 Qd4#
A4C) 35...Rxd6 36 Qd6+ Kf5 37 Qf6+ Ke4 38 Re2+ Kd(4)5 39. Qd6+ Kc4 40 Re4+ Kb5 (or 40...Kb3 41 Rb4#) 41 Rb4+ Ka5 42 Qb6#

B) 32....Kxe5 33 Re2+ Kf6 (33...Kd5 34 Nc2#) 34 Qe7+ B1) 34...Kg7 35 Nf5+ Kg6 36 h5+ Kxf5 37 Qe5+ Kg4 38.Re4# B2) 34...Kg6 35 h5+
B2A) 35...Kg7 36 Nf5+ Kh8 37 Rd8+ Rg8 38 Rxg8+ Kg8 39 Qe8# B2B) 35...Kxh5 36 Rh3+ Kg6 (36...Kg4 37 Qh4#) 37 Qe4+ Kg7 (37...f5 38 Qf5 Kg7 39 Re7+ Kg8 40 Qh7 Kf8 41 Rf3#) 38 Nf5+ Kg6 (if 38...Kh8 see B2A line and if 38...Kf6 39 Qe5+ Kg5 40 Ne7+ Kg4 41 Qf5#) 39 Ne7+ Kf6 (39...Kg5 40 Qf5#) 40 Qf5+ Kg7 41 Rxh7+ Kf8 42 Rh8+ Rg8 43 Rxg8#

Mar-01-22  mel gibson: <Others have already mentioned it but this is why I'm having an issue with just blatant computer line posting without checking what's played.

No; Black would <never> allow a king hunt by White in this position. Not a 1200 player, not Carlsen. In the posted line 32....Rxc2+ 33.Kxc2 Qb1+ 34.Kb3 Qxd3+ 35.Ka2, pretty much all Black players would settle on <35....Qd5+> to keep initiative and trade off to an easy endgame.>

You're right -
that trades off the Queens leaving Black a piece up - a Knight - and an easy end game.

I too was surprised that Black using the computer allowed all those dangerous checks using the computer line.

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