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Alexander Zaitsev vs Semyon Furman
USSR Championship (1967), Kharkov URS, Dec-??
Queen's Gambit Declined: Semi-Tarrasch Defense. Exchange Variation (D41)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Feb-08-05  Saruman: 30.♕h4+ ♕h5 31.♕xf6+ ♔h7 32.♕f7+ ♔h6 33.♕f8+ ♔h7 34.♖f7#.

<34.♖f7+> ♖e7 35.♖xe7# is so humiliating :-)

Apr-29-20  stacase: The only check that would work is the Knight sacrifice 29.Ng6+ allowing White's Queen access to 30.Qh4+ h4 instead of h3 as it allows 31.Qf6+ depending on what Black does. It really is a romp at this point and way too easy for a Wednesday.
Apr-29-20
Premium Chessgames Member
  agb2002: White has a knight for a bishop and a pawn.

Black threatens Qxd4+.

White can attack the black king with all four pieces, 29.Ng6+:

A) 29... hxg6 30.Qh4+

A.1) 30... Kg7 31.Qxf6+ and mate in two.

A.2) 30... Kg8 31.Rxg6+ Kf7(8) 32.Qxf6+ Ke8 33.Qf8+ Kd7 34.Rf7+ Qxf7 (34... Re7 35.Rxe7#) 35.Qxf7+ Re7 (35... Kc(d)8 36.Rg8+ Re8 37.Rxe8#) 36.Qf5+ and 37.Qxc2 wins.

B) 29... Kg7(8) 30.Nf4+ wins decisive material.

Apr-29-20
Premium Chessgames Member
  agb2002: I missed a mate in two after 34... Qxf7: 35.Rd6+ Kc7 36.Qd8#.
Apr-29-20  groog: agree with stacase, far too easy for a Wednesday
Apr-29-20  Brenin: Easy for a Wednesday: after 29 Ng6+ the attack plays itself. Black was doing fine until 28 ... Re4? Instead, Rg8 would have held the fort, forcing exchanges and giving Black winning chances based on the a and b pawns.
Apr-29-20  AlicesKnight: Found Ng6+ and Qh4+, which opens the doors, as others have said.
Apr-29-20  mel gibson: Today is so easy -
the first move screamed to be played.

Stockfish 11 says mate in 16:

29. Ng6+

(29. Ng6+ (♘h4-g6+ ♔h8-g7
♘g6-f4+ ♔g7-h8 ♘f4xd5 ♖e4xg4 ♕g3xg4 ♗b7xd5 ♖f1xf6 ♖c2xg2+ ♕g4xg2 ♗d5xg2 ♔g1xg2 ♔h8-g7 ♖f6-f2 a7-a5 d4-d5 a5-a4 d5-d6 h7-h5 d6-d7 h5-h4 d7-d8♕ h4-h3+ ♔g2xh3 ♔g7-g6 ♕d8-g8+ ♔g6-h5 ♕g8-h7+ ♔h5-g5 ♖f2-f5+) +M16/71 97)

Apr-29-20  Pedro Fernandez: <Hi all!>. This is my variation before look at the solution:

29.Ng6+ Kg7 30.Nf4+ Qg5 31.Rxg5+ fxg5 32.Nh5+ Kg6 33.Rf6+ Kxh5 34. Qh3+ Rh4 35. g4 mate.

If I have some comments about ''the'' (indeed 'a') solution, I'll reply again.

Apr-29-20  Pedro Fernandez: Yes! Looking at solution, white also get mate:

34...Qxf7 35.Rd6+ Kc7 36.Qd8 mate, nice problem!


click for larger view

Apr-29-20
Premium Chessgames Member
  chrisowen: News on g6!
Apr-29-20  Pedro Fernandez: This time I couldn't decode some idea by my great friend <Chris>. Of course, I saw a few variations with 29...hxg6 taking immediately the white knight, but all ones led to mate, that's why I tried with 29...Kg7. (which also yields to #)
Apr-29-20  Pedro Fernandez: Hi <Chris>! What's up! Take care with the COVID.
Apr-29-20  TheaN: Hah. So you see, what's easy for one on one day is easy for another on another. I botched this one up.

Of course, <29.Ng6+>. Moving to the g-file fails due to Ne7+ or Nf4+. <29....hxg6> and now I was inclined to play <30.Rxg6?<>>.

It's much more interesting than it looks. I just completely missed the Qh4-f6 maneuver altogether, no idea why. After Rxg6 White threatens Rh6# and Qh3+ with mate... the following prevent that, but not mate in general.

30....Qh5? 31.Rg8+ Kh7 32.Qxg7#.

30....Qxd4+ 31.Kh1 +- doesn't help.

30....Kh7? 31.Rh6+! Kxh6 32.Rxf6+ Kh5 (Kh7 33.Qg6+ Kh8 34.Rf8+ Qg8 35.Qxg8#) 33.Qg6+ Kh4 34.g3+ Kh3 35.Qh7+ Qh5 36.Qxh5+ Kg4 37.Qh4#.

The only, and most logical defense Black has is <30...Rxg2+! 31.Qxg2 Qxd4+ 32.Qf2 Rg4+! 33.Rxg4 Qxg4+ 34.Qg3 Qd4+ 35.Qf2 Qg4+ =<>> and it fizzles out in a perpetual. Darn.

Apr-29-20
Premium Chessgames Member
  chrisowen: <Pedro Fernandez> This pandemic makes me feel sick

All I do makes me feel blue cos there's a knight in order keeping gifted afforder

Like a quip too quick makes me feel sick

All I do is come back to you.

Apr-29-20  catlover: <Chris> if you can talk about the pandemic in rhyming verse, you must be doing okay.
Apr-29-20
Premium Chessgames Member
  chrisowen: Flabberghasted Not Going out!
Apr-29-20  alshatranji: What on earth is going with chrisowen? Is he getting coherent? Now he's writing poetry.
Apr-29-20
Premium Chessgames Member
  chrisowen: Revelations 12:3 no?
Apr-29-20
Premium Chessgames Member
  Louben: Easier than yesterday...
Apr-29-20  raju17: if 29.......Kg7 30 Nf4 dis chk winning Black Queen
Apr-29-20  GoldenKnight: <raju17> The Queen can interpose, so it's actually a Queen for a Rook.
Apr-29-20  zb2cr: For some reason, I found this one more easily than Tuesday's puzzle. White begins with 29. Ng6+. Black can take, the main line, or try 29. ... Kg7. White meets that with 30. Nf4+ and Black's Queen must drop.

The main line is 29. ... hxg6; 30. Qh4+. Black has three ways to get out of check: 30. ... Qh5, 30. ... Kg7, and 30. ... Kg8.

A. 30. ... Qh5; 31. Qxf6+. Here Black has two choices A1. 31. ... Kh7; 32. Qf7+, and Black will be mated with White Queen on f8 and White Rook on f7. A2. 31. ... Kg8; 32, Rxg6+, Qxg6; 33. Qxg6+, Kh8; 34. Rf8#.

B. 30. ... Kg8; 31. Rxg6+, Kf8; 32. Qxf6+, Ke8; 33. Qf8+, Kd7; 34. Rf7+, Qxf7; 35. Qxf7+, Re7; 36. Qf5+ and Black loses a Rook.

C. 30. ... Kg7; 31. Qxf6+, Kg8; 32. Rxg6+, Kh7; 33. Qg7#.

Apr-30-20
Premium Chessgames Member
  fredthebear: Does anybody know what happened to our friend Whiteshark?
Apr-30-20
Premium Chessgames Member
  perfidious: <fred>, now you mention it, I am also curious and hope all is well with that esteemed contributor.

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