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Thomas Espig vs Lothar Zinn
DDR-ch 22th (1973), Erfurt GDR, rd 7
Modern Defense: Gurgenidze Defense (B06)  ·  1-0



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sac: 36.Rxa4+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-27-14  Cheapo by the Dozen: Over the board I'd try d6, all the more because Black's blockade with Bd6 looks like a pretty sound defense if he gets the chance.

That it hangs the c-pawn doesn't look like a big deal.

If Black tried to blockade with Nd7 and hide his king at c8, I'd try to break through on the queenside files.

Apr-27-14  fishkabob: Regarding the question how white wins from final position. Check with the queen. Took check the g file some more queen check and Qh4. Etc. For instance Kf5 Qd3 Kg5 Rg1 Kh6 Qe3 Kh7 Qe4-h4
Apr-27-14  morfishine: <fishkabob> Nice! I was missing <44.Rg1+>
Apr-27-14  1971: With the clock ticking, I settled on 29. Rhb1 where black still has to solve problems, since I found nothing after:

29. Rxa4 NxR 30. Qb3+ Nb6 31. Qb5 Qe8 when both Qc6+ and Qa5 are harmless.

29. d6 Qxc4 30. Qf3+ Ka6

Apr-27-14  Sally Simpson: Had a look whilst waiting for the Nak v Maggie game to get out of the opening.

click for larger view

Looked at 29. Rxa4 Nxa4 30.Qb3+ Nb6 31.Qb5

click for larger view

....maybe...naybe not.

Then saw the trap!

click for larger view

29.d6 Qxc4 30.Qf3+ Ka6 31.Bd3

click for larger view

It's the only other dynamic try. (cannot resist a good trap...never could.) After that it's a let see what he does and play it from there position. (too long and varied for accurate calcualtion - play it off the cuff.)

Right off to watch Nak v Maggie, last time I looked the Canadian lads were hogging the page and exchanging greetings, let's hope at last they have something to cheer about - it can only mean a wild game.

Apr-27-14  Moszkowski012273: 39.Qb7+ was much stronger.
Apr-27-14  CC0112358: White is down two pawns

29. d6 Bh6
30. Qe5+ Kb8
31. d7 Bxf4
32. Qxf4+ Kb7
From here, white's pieces (Q, B, R) will chase the black King around the board until a point where the King is trapped

Apr-27-14  Refused: 29.d6 looks like the most natural moves, and all of a sudden those neat little Bishops and the Queen have open diagonals to hunt that king down.

29.d6 Bh6 black has to try to take off as much pressure off his king as possible. 30.Qe4+ Kb8 (Ka6 looks even more unpleasent with a queen ready to enter on c6) 31.d7+ Bxf4
32.Qxf4+ Kb7
33.Be4+ Ka6
34.Rxa4 and the King will eventually get hunted down by Queen Rook and Bishop.

Apr-27-14  patzer2: Considered and dismissed the winning move 29. d6!!, solving today's Sunday puzzle, because I didn't see the possibility of an amazing King hunt.

Here's a fairly deep look, played out move-by-move, with Fritz 12:

<29. d6!! Bh6>

If 29... Qxc4 (diagram below),

click for larger view

then 30. Qf3+! Nd5 (diagram below)

click for larger view

31. Rxa4! Qxa4 32. Qxd5+ Kb8 33. Rb1+ Qb4 34. d7+ Bd6 35. Bxd6#

<30. Qe4+ Kb8>

If 30...Ka6, then 31. Rxa4+! Nxa4 32. Qc6+ Nb6 33. Ra1#.

<31. d7+ Bxf4 32. Qxf4+ Kb7>

If 32...Ka8, then 33. Be4+ Nd5 34. Bxd5+ Qxd5 35. cxd5 .

<33. Qe4+ Kc7 34. Qf4+ Kb7 35. Be4+ Ka6 36. Rxa4+ Nxa4 37. Qd6+ Ka5>

Not 37... Nb6?? 38. Ra1#.

<38. Qc7+ Kb4>

If 38...Nb6, then 39. Qxc5+ Ka4 (39... Ka6 40. Qb5#) 40. Bc2#.

<39. Rb1 Kc3>

If 39...Kxc4, then 40. Rc1+ Kd4 (40...Nc3 41. Qa5! ) 41. Qf4! .

<40. Qa5+ Kd4 41. Qd2+ Kxe4 42. Re1+>

Black resigns in lieu of 42...Kf5 43. Qd3+! Kg5 44. Rg1+ Kf4 (44... Kh6 45. Qe3+! Kh5 46. Qf3+ Kh6 47. Qf4+ Kh5 48. Qg4+ Kh6 49. Qxh4+ Qh5 50. Qxf6+ Kh7 51. Qg7#) 45. Rg4+ Ke5 46. Re4+ Kf5 47. Re7+ Kg5 48. Rxf7 .

Premium Chessgames Member
  Penguincw: I thought 29.Rxa4 Nxa4 30.Qb3+ Nb6 31.Qb5 would be good. :|
Apr-27-14  vajeer: I deviated from the text on move 37 with Qc7 instead of Qd6+. White threatens mate in one with 38. Bb7. 38....Rb8 fails to d8(Q) while Nb6 fails to Ra1+. So Black must continue with

38 Bb7+ Kb5
39 Rb1+ Nb2
40 Bc6+ Kb4 (Ka6 then Ra1+)
41 Qb7+ and black is doomed. I like this line better than the text unless I have missed any refutation.

Apr-27-14  Patriot: White is down 2 pawns for the bishop pair.


29...Bxd6 30.Bxd6 Nxc4 31.Qf3+ Kb6 32.Rhb1+ Ka5 33.Qc3+

29...Bxd6 30.Bxd6 Nc8 31.Qf3+ may be winning as well.

29...Qxc4 30.Qf3+ Nd5 31.Be4 looks pretty good.

29...Nxc4 30.Qf3+ Kb6 31.Rhb1+ looks similar to the first line.

I'll go with 29.d6.

Premium Chessgames Member
  gawain: Who is that guy, Espig, anyway? Wonderful king hunt. You don't have to be a GM to come up with a brilliancy.
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop, a knight and two pawns.

Black is probably considering 29... Bd6, blocking the d-pawn and trying to trade the dark square bishops.

White should open lines to make the most of the bishop pair and better piece coordination. This leads to 29.d6:

A) 29... Qxc4 30.Qf3+ Nd5 (30... Ka6 31.Bd3 + -; 30... Qd5 31.Be4 + -; 30... Kb8 31.d7+ + -) 31.Be4 Kc6 (31... Rxd6 32.Bxd6 + -) 32.Rhd1 + -.

B) 29... Nxc4 30.Qe4+ Kb8 (30... Ka6 31.Qc6+ and mate next; 30... Kb6 31.Rhb1+ and mate soon) 31.Rhb1+ Nb6 32.d6+ Bd6 33.Bxd6#.

C) 29... Bh6 30.Qf3+

C.1) 30... Ka6 31.Rxa4+ Nxa4 32.Qc6+ and mate next.

C.2) 30... Kb8 31.d6+ Bxf4 32.Qxf4+ Kb7 (32... Ka8 33.Be4+ wins) 33.Be4+ Ka6 34.Qd6 Qxc4 (34... Ka5 35.Qxc5+ Ka6 36.Qb5#) 35.Bd3 wins the queen.

D) 29... Bxd6 30.Bxd6 Nc8 31.Be4+ and mate in two.

Apr-27-14  morfishine: I guess tossing the Bishop at the end was the "insane" move


Premium Chessgames Member
  agb2002: I thought that 34.Qd6 in my line C.2 was more elegant than the other two moves I considered, 34.Rxa4+ and 34.Qc7, but missed 34... Qxd7 - +.

Ironically, the other two moves win.

Apr-27-14  jawill500: newzild thank you for your analysis hat was vey helpful.
Apr-27-14  FlashinthePan: Rybka 2.2 may be dumb, but fails to find a win for White after 42.Re1. Where does the shoe pinch?
Apr-27-14  fishkabob: Again. Win in final is queen checks and rook checks. Rg1 and Qh4. Look above.....
Apr-27-14  Marmot PFL: 29 d6 is about the only active try for white. (If it black to move Bd6 would prevent this). 29 d6 threatens 30 Qe4+ Kb8 (30...Ka6 31 Rxa4+ Nxa4 32 Qc6+ Nb6 33 Ra1+) 31 d7+ and I don't see a really satisfactory defense.
Apr-27-14  FlashinthePan: <fishkabob: Kf5 Qd3 Kg5 Rg1 Kh6 Qe3 Kh7 Qe4-h4> Kh6 is the wrong move in your continuation. After Kf4 instead (which is rather counter-intuitive) there doesn't seem to be a win for White, and the game ends in perpetual check, as per Rybka.
Premium Chessgames Member
  Longview: @Patzer2: I saw the d6 somewhat but thought R(h)b1 first would be a good build for it threatening to take the a4 pawn and pinning the N to the King. I thought the Black Queen would go to E8 to protect and then she could not take the c4 pawn. I did not see the B-d6 or white Q-f4+ that you brought out. Beautiful move! I had focused on: 29. R(h)b1 Qe8 (B-d6 is better for black) 30. Bd4 Qd7(again B-d6 would be better 31. d6 (disc +) Kb8 (Bxd6 would be better) 32. Qd5 threatening mate. I guess that is why I am not an A player.
Apr-27-14  Cheapo by the Dozen: The final mating combination is:

Diagonal check to chase king to g-file.

Rg1+ to chase king to h-file.

Maneuver to Qxh4+.

If Qxh4 happens with Black's king at h6, and he interposes with Qh5, then Qxf6+ is mate in two. Or if that happens with Black's king at h7, then Qxh5 is immediate mate.

Apr-27-14  solver43: After initially rejecting 29 d6 I proceeded to choose 29 Qb1 and quickly found out how inept is was as it seemed
to lead to a mating attack for black along the g file.

Having played through the game as played this seems to a case of needing to trust your instincts based on the positional setup rather than trying to calculate every possible variation.

Apr-28-14  BxChess: <FlashinthePan, fishkabob>: Unless I missed something, the sequence
42. Re1+ Kf5
43. Qd3+ Kg5
44. Rg1+ Kf4
leads to the loss of the Black Queen:
45. Rg4+ Ke5
46. Re4+ Kf5
47. Re7+
Its not mate, but it is decisive.
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