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Paul Keres vs Franciscus Antonius Kuijpers
Moscow (1963), Moscow URS, rd 14, Nov-17
Spanish Game: Morphy Defense. Modern Steinitz Defense (C72)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 17 times; par: 46 [what's this?]

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Kibitzer's Corner
Jan-17-05  WMD: Kuijpers played well to a point. 22...b5 is the fatal error. Two passed pawns on the sixth rank spell doom.
Jun-22-13  The Last Straw: 31...♖b8 32.♕xd8+ ♖xd8 33.♘c5
Jun-22-13
Premium Chessgames Member
  Phony Benoni: <The Last Straw>: After <31...Rb8>:


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32.Qxb8! is the killer.

Jun-22-13
Premium Chessgames Member
  al wazir: I got the first two moves. How many moves does one have to get before claiming to have solved the puzzle?

Material was even until the end, and I think black could have held out longer, if not indefinitely, by playing 29...Rb7. (If 30. Nc5, then 30...Rb8.)

Jun-22-13  ounos: Ah, if only 23. cxb6 was the solution; the trolling would have been substantial :)
Jun-22-13  Cibator: Re the position after Black's 28th: Keres seemed to have a thing for immobilising the enemy Q on its own square by means of a P on the 7th rank in the same file. See J Rejfir vs Keres, 1956.
Jun-22-13  The Last Straw: <Phony Benoni> Oops, missed that. :P
Jun-22-13  nottogoodabeginner: to all who wonder how many moves to claim puzzle solved - all of them to the end
Jun-22-13  morfishine: Hard to tell what was actually played. I think White wins with both 23.Bxb5 & 23.dxc6

(1) <23.Bxb5> 23...Rxa1 24.Rxa1 cxb5 25.c6 Nbd7 26.Ra7 Qe8 27.Na5 Ra8 28.Rxa8 Qxa8 29.cxd7 Nxd7 30.Qxb5

(2) <23.dxc6> 23...bxa4 24.Na5 Rxa5 25.cxd6 Qa7 26.c7 Rc8 27.cxb8=Q Rxb8 28.d7 Rd8 29.bxa5

**********

PM: Of course, Keres handles 23.dxc6 much better than I did

Jun-22-13  Jimmy W: Advantage to White's position;
23. dxc6 Rxa4 24. cxd6 Rxa1 25. Nxa1 Qe8 26. c7 Rc8

23. dxc6 bxa4 24. cxd6 Qe8 25. c7 Rc8

23. dxc6 Nxc6 24. cxd6 Qb7 can lead to some exchanges.

Jun-22-13  M.Hassan: "Very Difficult"
White to play 23.?
Equal in material

Black's back rank is not strong. Pawns in front of the King are intact and the Rooks are not connected yet. White should have no problem to open the files:

23.dxc6 bxa4
24.cxd6
<if...Qxd6 25.Qxd6 Rxd6 26.Rxd6 and Black looses a Rook more>

24.........Qe6
25.Nc5 Qe8
So far, White has had two passed pawns for the price of his Bishop 26.c7 Rc8
27.cxb8=Q Rcxb8
White is only a pawn up now. I am not sure if 27.cxb8=Q is the right move as it appears to be pre-matured. Can't continue at this time.

Jun-22-13
Premium Chessgames Member
  An Englishman: Good Evening: Pretty easy--create two connected passed pawns by any means necessary. I wonder about 13...Ncb8. Was that really forced? If yes, then Black has the most subtly bad position I've seen in quite some time.
Jun-22-13
Premium Chessgames Member
  chrisowen: Ever the optimist in for a penny in for a pound,

takes my saw 23.dxc6 to kick off a punt worry not queen and creative rook d1 will aside a1 a4 band,

also b3 could swing up later coupling affordable mission to see off any resistance provide a8 bung ok at 22...b5? flaps come off cobbled a st a4 generates very little answer in extra curricular activity may interprete ram angles victory to, believe it is a forded gain again capture a4 in book a slot for honour I think of light will pen,

back pawn chain so undermine by the stem you have right c6 off 23.dxc6 light indebted to b5 in 22...cxd5 we could term an equality reach instead b5 free eg low 23...Rxa4 24.cxd6 the passers mean more than a4 bishop ash rampage continue in jib,

draw be cool 24...Rxa1 oomph a garage bus tore through ok now a1 ledge material so white has intermezzo reacher in dandc pawns 25.Nxa1 bobbled see bed queen evermore in bared 25...Qe8 teeth e6 a lumped a7 live to be clink cuffed c7 wins ergo knightb8 a tinged regret rooke8 over burdened it now in bade forth delineate am corpus 26.c7 delight,

as if clop b8 afters 26...rc8 will do account 27 the dominant it another b8 in discretion to delivers 28.d7 qd8 29.nb3 feed in c5 or b6 aint over d7 one 30.Qc3 path laid bare yes sir e4 blunders although a mere bagatelle pawnd7 formality in?

Jun-22-13
Premium Chessgames Member
  erniecohen: Another cooked problem: 23. cxb5 (ep) - the move any beginner would play - also wins cleanly. Of course, there's no guarantee that the move is legal, but it looks likely from the position.

Has CG ever posted a problem where an ep capture was the only winning move?

Jun-22-13  mistreaver: Saturday.White to play. 23.? Very difficult.
This position looks like it arose from the breyer variation of the ruy lopez. It is not surprising since Paul Keres was one of the greatest experts on the "Queen of the openings". The question is in which way can white release the central tension and save the piece? I would go for
23 dxc6!
and now the bishop is immune since
A) 23... bxa4
24 cxd5 Qa7
25 c7 is pretty crushing
Black's better answer is probably recapture:
B) 23... Nxc6
24 cxd6 and
25 Qxb5 (or if Qa7 then Bxb5 and the queen has to move again) I think that after dxc6 white keeps winning advantage. Time to check.
-----
Oh of course, i forgot to mention that
23... Rxa4
24 cxd6
is again the cleanest.
I was only wrong about the variation, it wasn't Breyer but Steinitz Defence. Great play from Paul Petrovich.
Jun-22-13  Fish55: It didn't occur to me that en passant was a possibility. Absent that, 23. dxc6 is pretty obvious, and forced.
Jun-22-13  offramp: May I just say, by-the-by, en passant?
Jun-22-13
Premium Chessgames Member
  kevin86: Rarely have I seen two pawns as powerful as these!
Jun-22-13  Patriot: I gave myself only a few minutes on this.

23.dxc6 looks interesting.

23...bxa4 24.cxd6 Qe8 25.c7 is about all I got. Two minutes isn't enough time but decided to try this on a difficult position to see how I would do.

Jun-22-13
Premium Chessgames Member
  agb2002: White has a bishop for a knight.

Black threatens 23... R(b)xa4.

The black rooks are still disconnected and the black doesn't have a flight square like the white king. This suggests, 23.dxc5 trying to reach Black's back rank:

A) 23... bxa4 24.cxd6

A.1) 24... Qe6 25.Nc5

A.1.a) 25... Qc8 26.c7 Rf8 (26... Rd7 27.cxb8=Q and 28.Nxd7 + -; 26... Re8 27.cxb8=Q Qxb8 (27... Rxb8 28.d7 + -) 28.Na6 Qb7 29.Nc7 + -) 27.cxb8=Q Qxb8 (27... Rxb8 28.Rxa4 + -) 28.b5 a3 29.Na6 Qb7 30.f3 and White seems to win another pawn.

A.1.b) 25... Qe8 26.c7 Rc8 (26... Rd7 27.cxb8=Q and 28.Nxd7 + -) 27.cxb8=Q Rcxb8 (27... Raxb8 28.d7 + -) 28.Na6 followed by Nc7 + -.

A.2) 24... Qa7 25.c7 Re8 26.cxb8=Q followed by Na5 with the double threat Nc6 and Rxa4.

A.3) 24... Qe8 25.c7 Rc8 26.cxb8=Q Rcxb8 (26... Raxb8 27.Nc5 with the double threat d7 and Rxa4) 27.Nc5 Rxb4 28.d7 Qd8 29.Qd6 or 29.f3 looks advantageous for White.

A.4) 24... Qf8 25.c7 looks similar to previous lines.

B) 23... Nxc6 24.Qxb5 wins a pawn.

Jun-22-13
Premium Chessgames Member
  gezafan: This was actually pretty easy. They rated it as being too hard.

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