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Mikhail S Tseitlin vs Karsten Liesmann
Jubilee Open SK Turm Kleve (1999), Kleve GER, rd 1
Formation: Queen Pawn Game: London System (D02)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 10 times; par: 29 [what's this?]

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Kibitzer's Corner
Jun-16-11  Sem: A reassuringly full board for fourteen moves and then ... wham!
Jun-16-11
Premium Chessgames Member
  profK: Must commit to memory this double minority sacrifice...very cute and very effective....
Jun-27-20
Premium Chessgames Member
  Predrag3141: Keeping the knight on e5 (sacrificing the bishop instead) had the big advantage of forcing Black's king to f8 after Qg3+. This makes 17 Nxf7 very powerful.

Once the queen enters Black's kingside with 18 Qg6+ it picks off the h-pawn with check, then positions itself back on g6. That looked good enough to me, I didn't calculate Ng5 until it was in front of me after clicking through.

Jun-27-20
Premium Chessgames Member
  drollere: cute -- and much simpler than yesterday. 16. .. Kf8 is forced by Nf7#. if 21. .. Rf8, 22. Nxe6 Qe8, 23. Qh6+ and mate next.
Jun-27-20  Brenin: A terrific attack, encouraged by Black wasting time with the QN and weakening f7 with Re8. 17 ... Kxf7 was fatal: 17 ... Qc7, followed by Bd6 or Bd8, might have provided an escape route for the K.
Jun-27-20  devere: Shouldn't this problem be rated "very obvious"?
Jun-27-20  mel gibson: The first move was easy but the rest required some calculation.

Stockfish 11 says:

15. Bxh6

(15. Bxh6 (♗f4xh6 g7xh6 ♕h3-g3+ ♔g8-f8 ♘e5xf7 ♕d8-c7 ♘f3-e5 ♗e7-d8 ♘f7xh6 ♘d7xe5 d4xe5 ♕c7-g7 ♕g3-f4 ♔f8-e7 e5xf6+ ♕g7xf6 ♘h6-g4 ♕f6-g7 e3-e4 ♗d8-c7 ♕f4-f3 d5-d4 c3xd4 c5xd4 ♕f3-e2 e6-e5 h2-h3 ♔e7-d8 ♗d3-a6 ♗b7xa6 ♕e2xa6 ♗c7-d6 f2-f4 ♖c8-c7 ♕a6-a4 ♖e8-h8 f4xe5 ♗d6xe5 ♕a4-b5 ♖h8-h5 ♘g4xe5 ♕g7xe5 ♕b5xe5 ♖h5xe5 ♖d1xd4+ ♔d8-e7 ♖e1-e2 ♖e5-c5 ♔g1-f2 ♖c5-c1 ♔f2-e3 ♖c7-c2 ♖e2xc2 ♖c1xc2 ♖d4-d2 ♖c2xd2 ♔e3xd2 ♔e7-e6 h3-h4 a7-a5) +4.20/45 513)

score for White +4.20 depth 45

Jun-27-20  Brenin: <Tseitlin v Taimanov, 1981> is a 9-move win for today's victor. The fly in the ointment is that his opponent was I. Taimanov, rather than the great Mark Evgenievich.
Jun-27-20
Premium Chessgames Member
  thegoodanarchist: <drollere: cute -- and much simpler than yesterday. 16. .. Kf8 is forced by Nf7#. if 21. .. Rf8, 22. Nxe6 Qe8, 23. Qh6+ and mate next.>

If 21...Rf8 22.Nxe6 Qe8 then 23.Qg7# is mate.

Jun-27-20
Premium Chessgames Member
  Predrag3141: <Shouldn't this problem be rated "very obvious"?>

Not to me. It took a long time to see that Bxh6 and not Nxf7 is correct.

And what about the line not played, 15 … Nxe5?. 16 dxe5 is obviously good for White, but it's not easy to see that 16 Nxe5 doesn't work (Stockfish rates it dead equal).

Jun-27-20  RandomVisitor: Adding to what <mel gibson> has posted:


click for larger view

Stockfish_20061707_x64_modern:

<58/99 3:23:27 +4.56 15.Bxh6 gxh6 16.Qg3+ Kf8 17.Nxf7 Qc7> 18.N3e5 Bd8 19.Nxh6 Nxe5 20.dxe5 Qg7 21.Qf4 Ke7 22.exf6+ Qxf6 23.Ng4 Qxf4 24.exf4 Kd6 25.g3 Rf8 26.Ne5 Bc6 27.h4 b5 28.Bg6 Rc7 29.h5 Bf6 30.h6 Be8 31.Bc2 Bh8 32.h7 Rg7 33.Kh2 a5 34.a3 Rb7

58/81 3:23:27 +2.50 15.g4 Nxe5 16.Nxe5 Rc7 17.dxc5 Nd7 18.cxb6 axb6 19.Nxd7 Rxd7 20.Bb5 Qc8 21.Bxd7 Qxd7 22.Qf3 Rf8 23.Be5 Qc6 24.h3 f6 25.Bg3 b5 26.a3 Ba8 27.Kh2 Qe8 28.Qe2 Bc6 29.Rf1 Qf7 30.Rde1 Ra8 31.Qd1 Bc5 32.Qf3 Bf8 33.Rd1 Be7 34.Rfe1 Rf8

Jun-27-20
Premium Chessgames Member
  agb2002: The weak points around the black king (f7, g6, h6) invite to play 16.Bxh6 (16.Bg6 Nxe5 17.Nxe5 fxg6 18.Qxe6+ Kh7 seems to go nowhere):

A) 16... gxh6 17.Qg3+ (17.Qxh6 Bf8 18.Qg5+ Bg7 looks bad for White) 17... Kf8 (17... Kh8 18.Nxf7#) 18.Nxf7

A.1) 18... Kxf7 19.Qg6+ Kf8 20.Qxh6+ Kg8 (20... Kf7 21.Ng5+ and mate soon) 21.Ng5 Nf8 22.Nxe6 wins.

A.2) 18... Qc7 19.Qg6 Nb8 (to answer Nxh6 with Bd8) 20.Qxh6+ Kg8 21.N3g5 Bd8 22.Nxd8 seems to win (22... Qxd8 23.Bh7+ and mate in two).

B) 16... Nxe5 17.dxe5 gxh6 18.exf6 Bxf6 19.Qxh6 wins a pawn at least.

Jun-27-20
Premium Chessgames Member
  agb2002: I made a mess somehow in my line A.1. White wins simply with 22.Bg6 instead of the strange blunder Nxe6.

Also instead of 21.N3g5 (which also wins) the simple 21.Qh8+ Kxf7 22.Ng5# is far quicker.

Jun-27-20
Premium Chessgames Member
  Predrag3141: <agb2002 B) 16... Nxe5 17.dxe5 gxh6 18.exf6 Bxf6 19.Qxh6>

How about 16 … Nxe5 17 dxe5 gxh6 18 Qxh6, and the knight can't move: Only 18 … Ne4 blocks the bishop, but it drops Black's queen.

Jun-27-20  Brenin: Unlike <devere>, I didn't find this problem "very obvious". First of all, as <Predrag3141> wrote, there's a choice of two "obvious" sacrifices to break open Black's K-side, namely 15 Bxh6 and 15 Nxf7. The first works splendidly, since after 15 ... gxh6 16 Qg3+ gains a tempo, allowing the Q to invade on g6 after 16 ... Kf8 17 Nxf7 Kxf7; the second is much less powerful, e.g. 15 ... Kxf7 16 Ne5+ (16 Bxh6 gxh6 and White's attack fizzles out) Nxe5 17 dxe5 c4 18 exf6 cxd3 19 fxe7 Qxe7 20 Rxd3 e5 leaves White a P up but with Black surviving the attack, and relying on opposite bishops to hope for a draw.

Secondly, there are other moves White might consider, without sacrificing material: 15 g4 leads to a good advantage for White (see <RandomVisitor>'s post, for example), while 15 Qg3 threatens Bxh6 and invites 15 ... Nh5 16 Nxf7, winning a pawn.

I salute and admire anyone who found this "very obvious"; with all these possibilities to consider, I found it difficult but instructive.

Jun-27-20  Granny O Doul: At move 14, White has the threat of 15. Nxf7 Kxf7 16. Qxe6+. Black did at least defend against that. Perhaps the plan with 11... Nb8 was too slow.
Jun-27-20
Premium Chessgames Member
  Jambow: Move 15. Bxh6 was patently obvious. The more subtle Qg3+ shift was less obvious but allowed the forcing continuation. Nice puzzle and I might have even played it correctly OTB.
Jun-28-20
Premium Chessgames Member
  agb2002: <Predrag3141: <agb2002 B) 16... Nxe5 17.dxe5 gxh6 18.exf6 Bxf6 19.Qxh6>

How about 16 … Nxe5 17 dxe5 gxh6 18 Qxh6, and the knight can't move: Only 18 … Ne4 blocks the bishop, but it drops Black's queen.>

You are right, 18.Qxh6 is considerably stronger than 18.exf6 because it seems to lead to an endgame with two extra pawns after 18... Bf8 19.Qxf6 Qxf6 20.exf6. Thank you!

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