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Esta partida fue una colaboración especial del Campeón Mundial ICCF Pertti Lehikoinen, publicada originalmente en la web de LIPEAD (Liga Peruana de Ajedrez a Distancia)

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[Event «WC 20th Final»]
[Site «ICCF»]
[Date «2011.02.26»]
[Round «?»]
[White «Lehikoinen, Pertti»]
[Black «Hafner, Manfred»]
[Result «1-0»]
[ECO «D37»]
[Annotator «Pertti Lehikoinen and Panu Laine»]
[PlyCount «131»]
[EventDate «2011.02.26»]
[SourceDate «2011.02.26»]

{This positional struggle against Manfred Hafner from Germany was my best game
in the 20th Correspondence Chess World Championship Final. I was able to
convert a small advantage I gained in the opening to a full point.} 1. d4 d5 2.
c4 e6 3. Nc3 Be7 $1 {This move order was originated by Tigran Petrosjan in the
late 50’s and the early 60’s and he used it in 3 games in his match against
Botvinnik in 1963. It found its way to games of Victor Kortshnoi, Anatoli
Lutikov, Boris Spassky, Lajos Portisch and many other top players of the time.}
({3…Be7 purpose is to avoid the worst problems of QG Exchange variation,
when after} 3… Nf6 4. cxd5 exd5 5. Bg5 {black has some problems with his
queen’s bishop. The line} c6 6. e3 Bf5 7. Qf3 $1 {is unfavourable for black.})
{The idea of 3…Be7! is revealed in the variation 4.Nf3 Nf6 5.cxd5 exd5 6.Bg5
c6 7.e3 Bf5 or 7.Qc2 g6 followed by …Bf5. In both cases black has solved the
problem of his «bad» c8 bishop and renders the exchange variation aimless for
white. We can say that 3…Be7! force white to play Nf3 or alternatively Bf4
intead of the normal Bg5, and in both csaes white doesn’t have a hop of
opening advantage.      A further interesting question is that should black
overall be afraid of the exchange variation? One answer is given in my game
against Alexander Ugge in XIX 3/4 Final. In that game I succeeded to win my
Canadian opponent and I barely made it to the 20th WCC Final instead of the
Canadian. He made it to the 21st WCC Final and got silver medal right after
the venerable Joop J. van Oosterom being the only player without losses.} 4.
Nf3 {Black’s 3rd move practically forced me to give up the exchange variation,
so I had to invent something else.} Nf6 5. Bf4 {I had earlier played here 5.
Bg5, but my latest effort with this move ended into a draw only after 17 moves,
so I wanted to try something else. Though according to opening manuals 5.Bf4
shouldn’t be any better in fighting for an advantage, but it is not at all
that simple. Anyway white enjoys the advantage of the opening move and the
white bishop on the diagonal h2-b8 is clearly more dominant than either of the
black bishops. So I was confident that I would find something to maintain a
small advantage with the white pieces.} O-O 6. e3 Nbd7 {The most usual move
here is 6…c5, but also 6…b6 and 6…c6 has been played rather regularly.}
7. c5 c6 8. Bd3 b6 9. b4 a5 10. b5 $1 {This move has been played only a couple
of times, but I had prepared a novelty into this variation. The usual
continuation is} (10. a3 Ba6 11. O-O Qc8 {with equality. This was also played
in Tomi Nyback-Magnus Carlsen, Dresden ol, 2008.}) 10… Bb7 11. cxb6 Nxb6 12.
bxc6 Bxc6 {Diagram [#]} 13. Ne5 $1 $146 {This is a novelty! Earlier
continuations had been} (13. O-O Nfd7 14. Qc2 h6 15. Nb5 Bxb5 16. Bxb5 Nc4 $1
17. Bxc4 Rc8 18. Rab1 Rxc4 {1/2-1/2, Peter Heine Nielsen-Kasimdzhanov,
Skanderborg, 2003. Kasimdzhanov recommends instead of 15.Nb5 to play 15.Rab1
Bb4 16.Rfc1 Qe7 17.Qe2 and considers it a little better for white. I also
spent a lot of effort to study that game, but rejected it after realising that
black can equalise by playing simply 13…Ne4.}) 13… Bb4 14. O-O Bxc3 15.
Nxc6 Qe8 16. Bb5 Bxa1 17. Bd6 {While black is collecting material, White is
adding the steam. Now white threatens to win the black queen with Ne7+ and
black queen doesn’t have any vacant squares left. Black’s only alternative is
to move his king to the corner, after which white may recollect the sacrificed
material.} Kh8 18. Qxa1 Ne4 19. Bxf8 Qxf8 20. Ne5 {I sent this move at the
last day before overstepping the time limit.} Nd6 21. Rb1 {After the heavy
exchange of blows the material is even and the position is going into a more
positional direction. White’s pieces are a little better located, but that
shouldn’t be significant. Instead black has one permanent weakness is a form
of a-pawn. Black’s future difficulties to protect it will give white a slight
advantage.} Nbc4 22. Bxc4 dxc4 {Diagram [#] Here my opponent spent a
considerable amount of time on pondering, weather to take back with a knight
or pawn. Ihad faced the same dilemma without  being able to draw any
definitive conclusions. Black’s choice was a slight surprise after all. After}
(22… Nxc4 {the most probable continuation would have been} 23. Nxc4 dxc4 24.
Qb2 $1 h6 25. h3 {and white enjoys a slight advantage also in this
continuation. In the game continuation black’s passed c-pawn is a weakness in
an ending, but in favourable circumstances it may also prove to be a strength.}
) 23. Rb6 {With a simple threat of Rxd6 and Nxf7+.} Kg8 24. h3 $1 Rc8 $8 {This
was almost forced as} (24… f6 25. Nd7 Qe7 26. Nc5 Qc7 27. Qb1 {is even more
advantageous for white.}) ({Even worse would have been} 24… Qd8 25. Rc6 Rc8
26. Rc5 Rxc5 27. dxc5 Ne4 28. Nxc4 Nxc5 {and like in a textbook example
white’s strong Q+N beats the black colleagues. Namely} 29. Qe5 Nb7 30. Qb5 Qa8
31. Qc6 {Threatening Nd6} Qb8 32. Nb6 $1 h6 {Luft, what else could black play?}
33. Nd7 Qa8 34. Nc5 $18 {and black loses his knight. Of course something else
like 30…Qc8 31.Nxa5 Dc1+ 32.Kh2 Qc7+ 33.f4 is better for black, but even
here black can’t take to a5 due to back rank mate. That is why white has an
undisputable advantage in all variations.}) 25. Qc3 $1 {I considered this move
really long time, because it demanded very deep analysis, so I took my first
and only allowed overstepping of the time limit here. After the game to my
surprise Fritz didn’t get this move even to top-6. Fritz’s favourite is} (25.
Ra6 {but when I played my analysis against Fritz, after variations} c3 26. Qc1
Ne4 27. Nd3 {as well as 26.Rc6 f6 27.Rxc8 and 26.Nd3 c2 27.Rxa5 Qd8 28.Ra3
also Fritz admitted that the white advantage had gone to the winds. Kasparov
has said that engines must be twisted even several moves towards your
variation before they agree with you. Here it is perfectly true. Usually I
even don’t use engines in positional game, as they have very little to offer
for a strong correspondence player. Insted in sharp and tactical situations
engines are mandatory, as they speed up a lot the analysis work. Even then it
is clear that you can’t trust blindly to engines opinions. Perhaps this is a
blessing for correspondence chess.}) 25… Qd8 26. Ra6 f6 {Black has also came
to a conclusion that his a-pawn is lost already. The following rather forcing
variation} (26… Ne4 27. Qc2 Qd5 28. Nc6 Qb5 29. Ne7+ Kf8 30. Ra7 Re8 {didn’t
attract black.}) 27. Nc6 Qd7 28. Nxa5 {Now the a5-pawn has been removed from
the board, but it can’t be considered a win of a pawn due to added strength of
the black c-pawn.} Nf5 {Here I expected more} (28… Ne4 29. Qb4 c3 30. Nb3 $14
{but white would have a slight advantage also in this variation.}) 29. Qb4 c3
30. Nb3 e5 {Black must try to rip the position open as much as possible to be
able to support the advance opf his passed c-pawn. An alternative} (30… c2
31. Nc1 {would lead to white advantage after} Qd5 32. Qb3 Qxb3 33. axb3 e5 34.
d5 e4) 31. dxe5 fxe5 {Naturally black didn’t like} (31… c2 32. exf6 c1=Q+ 33.
Nxc1 Rxc1+ 34. Kh2 Rc8 35. Qb3+ Kh8 {where white has four pawns for a knight
and black’s king’s position remains shaky.}) 32. Kh2 $1 {Finding this move
caused me a lot of trouble, while I was first time analysing this position at
my 25th move. I was obsessed that my king should run to fight for the black’s
c-pawn. Things started to materialise after I was able to convince my thick
head that white king has absolutely nothing to do in the open field with this
much material on the board. The game continuation removes the white king from
the future back rank checks.} Qc7 {An alternative was} (32… c2 33. Nc1 {,
but now} Qd1 $2 {would have been too straightforward, because} 34. Qb3+ Kf8 (
34… Kh8 $4 35. Rc6 $1 $18 {and white wins}) 35. Ra7 Ne7 36. Qb4 Re8 (36…
Qd8 37. a4) 37. Qa3 {would only lead to white advantage. Of course, instead of
the weak 33…Qd1 balck may develop something more quiet, but that would
eventually lead to positions resembling the game continuation with a slight
advantage for white, or in the best case to transpose to game continuation.})
33. Qe4 {This is a great post for the white queen. It controls important a8
and c2 squares, it chases the black knight away from f5 and keeps on
pressuring the e5 pawn.} Ne7 34. Nc1 c2 {Diagram [#] The black pawn on c2 is
really irritating for white. Without removing it, it will be impossible for
white to progress. Fortunately white has an excellent solution at his disposal
and it is perfect timing for that, as black doesn’t have any direct threats at
the moment.} 35. a4 $1 {White’s plan is very simple: White wants to create a
competitor to blacks c-pawn by advancing the a-pawn as far as possible. At
some point black must start paying attention to it and lighten the defence of
c-pawn.} Rf8 36. Ra8 {It is time for white to exchange rooks.} h6 {Of course
black can change rooks himself} (36… Rxa8 37. Qxa8+ Kf7 38. Qe4 {, but both
following continuations leave white on top} Qc3 (38… Qc6 39. Qxc6 Nxc6 40.
Kg3 Ke6 41. Kf3 Na5 $16) 39. a5 Qd2 40. Qc4+ Kf8 $16) 37. Rxf8+ Kxf8 38. a5
Qxa5 $1 {There is no point for black to delay taking the pawn any more.
Instead it is important for him to take control of the important d5 square for
defensive purposes.} 39. Qxc2 Qd5 {The pain in white’s flesh has been removed
at last and white is a clear pawn up. On top of that black has one isolated
pawn, which defence might prove difficult in the future. The black queen on d5
helps his defence and it is not easy to get her leave that square. Black’s
assets for successful defence consists of: all pawns are on the king side and
queens are still on board. Here I consider that my chances to win this game
compared to draw are fifty-fifty.} 40. Nd3 Kf7 {This move was a total surprise
for me! I had imagined that the knight ending after 41.Qc4 would be winning,
but things are not that clear. Fortunately the move came in just a couple of
days before my vacation, so I could delve into this knight ending for a month
without let my clock to tick. After a long hesitation I came to the conclusion
that it would be impossible to win this knight ending. By co-incidence I saw
the ending in Kivimäki-Pyshkin in Estrin Memorial, where my friend Kivimäki
was able to hold a draw in a knight ending with a pawn down. My own analysis
led to similar kind of position. So, I decided to keep the queens on board for
a while, although I couldn’t be sure about any brighter future. That
half-intuitive decision I never had to regret!} 41. f3 Kg8 42. Qc3 Nc6 43. h4
$1 {White wants to push the pawn to h5, where it would restrict even more
about black’s alternatives. In that case white’s long term plan could be to
land his knoght into g6 and threaten a mate along the back rank. If nothing
else, this would force black to give up d5 for his queen. Another aim was that
in case of g7-g6 and exchange of the pawns, black’s remaining pawns would be
as far as possible from each other, which would make black’s defence difficult.
Naturally white needs to ensure that he can support the pawn on h5, but that
is not a problem.} Kh7 44. h5 Kh8 {Diagram [#]} 45. Kg3 Qe6 $6 {Black’s first
mistake, if you don’t count his opening variation a mistake, where I was able
to make my novelty. Black shouldn’t have given up the d5 square under any
circumstances without a fight. Of course I could have gotten d5 after a long
fight, but I believe it would have taken some 20 moves more. Now all this was
handed to me on the plate.      A strange co-incidence happened here. A couple
of times my opponent had numbered his moves incorrectly. I had bypassed those
mistakes and with his next move the numbering was correct. But now something
happened, which hadn’t happened before: my opponent had marked my move as 45.
Kh3. I was absolutely sure that I had written down to the card 45.Kg3, but I
started to hesitate as my candidate moves had been 45.Kh3 and 45.Kg3. Even
more embarrassing was that my 45th move was the last move before time control
and I had only one day left. If I would have made a protest and I would be
wrong, I would get a five day penalty and lose on time. For a moment I was
even thinking to play my 46th move normally and look at his reaction, as if my
king would be on his opinion on h3 in check, he would notify me. In that case
my penalty would come on move 46 and not on 45 and I would be clear.
After a lengthy pondering I came to a conclusion that I couldn’t possibly have
been able to write down a diffrent move to the card and to the protocol,
because I always double check them twice. So I emailed to my opponent a
notification that he had written a wrong move to his card and he may naturally
move something else, if he wishes. It took three painfully slow days before he
replied. He was sorry for his mistake and confirmed that I had moved 45.Kg3
and his move is 45…Qe6. He kept his move the same and the only conlusion I
can withdraw from this is that he had genuinely made a mistake in writing the
moves down.       After this episode my paranoia grew to the extent that I
started to take photocopies of all my cards to be able to verify that my move
had been written down correctly and the card would signed. Perhaps one more
factor to take additional measurements was that at this point of the
tournament I started to fight for the medals. Another decision I took was that
I would never play by post any more as webserver solves all this kind of
problems. Webservers problem is that 50/10 thinking time is too quick for
about half of the WCC finalists. To my opinion ICCF shouldn’t push these
players to play by post only because they want to play slower, as roughly 30%
of the players have wished for slower playing tempo on server.} 46. Qa3 Kh7 47.
Nc5 Qe7 {Black can’t allow the exchange of the queens any more.} 48. Qd3+ Kh8
49. Qd5 {We can see now the consequences of black giving up the d5 square for
his queen. Nopw white queen lands there and starts to control the game.} Nd8 {
Diagram [#]} 50. Kf2 $1 {White king moves to e2, from where it can proceed to
d3 and e4 after exchanges.} Nf7 51. Ke2 Kg8 {I had considered my position as
winning since move 50 and from here my winning plan is almost forcing. My
intention is to play 52.Nd7 and to make sure that there is not any more direct
winning variation I let Fritz to calculate these positions from here on. I
have to admit that I have probably never before disagreed so much with the
engine about the variations as I did now.} 52. Nd7 {Gradually white manages to
paralyse black completely. Black’s next move is practically forced, because
black has great problems on his back rank.} Qe8 53. Qb5 $1 {Surprisingly this
self-evident move was only 10th on Fritz list. Fritz would prefer to play the
white king back to f2 and g3 without being able to proceed after that any more.
But this is not surprising for engines. The move played n the game threatens
54.Nf6+.} Kh8 {Alternatives were scarce. After} (53… Qa8 54. Kf2 e4 55. f4
Kh8 56. Kg3 {white wins rather quickly. Another alternative could be}) (53…
Nd6 54. Qc6 {and the black knight can’t move due to threat Nf6+, so} Qe6 55.
Kf2 e4 56. Qa8+ Ne8 57. Nc5 $18) 54. Qb8 $1 {Simple and strong! Fritz prefers
54.e4 and 54.Kf2, which are tame.} Qxb8 55. Nxb8 {This is an easy win for
white.} e4 {Practically forced, because otherwise white king just marches to
e4 and drops the pawn off.} 56. fxe4 Ne5 57. Na6 {White’s knight is coming via
c5 or b4 to d3 to chase the black knight away.} Kg8 58. Nc5 Kf7 59. Nd3 Nc4 60.
Kf3 {Diagram [#]} g5 61. hxg6+ Kxg6 {This is exactly the situation I was
aiming by the pawn push to h5. Black king should stand behind the e pawn and
simultaneously and remotely to defend the h-pawn. Impossible.} 62. Kf4 Kf6 63.
Nf2 Ke6 64. Ng4 h5 65. Nh2 Kf7 66. e5 {This was my best game in the WCC final
and it even had opening theoretical importance.   Notes: Pertti Lehikoinen.
Translated to English: Panu Laine.} 1-0

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