chesslablab / chess-api

REST-like chess API.
https://chesslablab.github.io/chess-api/
MIT License
23 stars 10 forks source link

Kramnik - Leko World Championship, Rd 13 #114

Closed programarivm closed 8 months ago

programarivm commented 1 year ago
[Event "Kramnik - Leko Classical World Championship Match"]
[Site "Brissago SUI"]
[Date "2004.10.16"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Peter Leko"]
[Black "Vladimir Kramnik"]
[ECO "A61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "129"]

1. d4 {(Notes by Raymond Keene.) After all the predictions of
a dull event, this is proving to be one of the most dramatic
sporting contests of recent WCC matches. Kramnik needed at
least one win from the last two games, and was not going to
leave it all to the very last game. He chose as Black a
strongly counter-attacking, unbalanced system, the Modern
Benoni, and one could not help but recall how this defence
gave Fischer his first win against Spassky in 1972. Kramnik, a
long-time 1 d4 player, must have been more familiar with this
structure than the neophyte Leko, and played in true Benoni
style, putting pressure on White with a King's-side pawn
advance. Leko seemed to escape any difficulties and a rook
endgame emerged on the board, but again Kramnik found ways to
set his opponent problems. Leko faced pressure on the board
and the clock, probably missing some chances to obtain a more
clearly drawn position, but with characteristic determination
found a series of 'miracle' saves and Kramnik could not find a
final decisive manoeuvre. Perhaps through sheer momentum, the
players continued until the most clearly drawn position of all
was reached... two lonely Kings. Did Kramnik miss a win?
Probably! I have been greatly assisted in my understanding of
this endgame by comments from acirce, a chessgames.com
contributor who is also a noted endgame composer [Ulf
Hammarström], and the analysis published on
www.chessbase.com. } Nf6 2. c4 e6 3. Nf3 c5 {The Benoni is
often seen as a dubious defence, but Kramnik is desperately in
need of something irrational to disturb the balance, given his
dire match situation.} 4. d5 d6 5. Nc3 exd5 6. cxd5 g6 7. Nd2
Bg7 {Or 7...Nbd7 8 Nc4 Nb6 9 e4 Bg7 10 Ne3 O-O 11 Bd3 Nh5 12
O-O Be5 13 a4 Nf4 14 a5, was Nimzowitsch-Marshall, New York
1927. In this line, 11...Re8 12 O-O c4 13 Bc2 Bd7 14 Bd2 Rc8
15 Kh1 Rc5 16 f3 Nc8 17 a4 a6 18 Ne2 Ne7 19 Bb4 Rc8 20 Bc3
also greatly favours White (Keene-Pritchett, British Ch
1972).} 8.e4 O-O 9. Be2 Na6 10. O-O Ne8 11. Nc4 {This transfer
of the Knight to c4 was, I believe, first seen in the
Nimzowitsch game and is now standard in many main lines of the
Benoni.} Nac7 12. a4 f5 13. exf5 {Kramnik has had this
position as White, a number of years ago. He drew in 46 moves
after the continuation 13 f3 Qe7 14 Bf4 g5 15 Bg3 f4 in the
game Kramnik Ivanchuk, Belgrade 1995.} Rxf5 14. Bg4 Rf8 { A
new move, it seems. } 15. Bxc8 Rxc8 16. Qb3 b6 17. Nb5 {White
is playing for a light square grip, but there is something
rather static about the position for White that emerges. That
is, it looks impressive, but it is hard to see how to improve
the position thereafter, or to exchange White's advantages for
others. } Nxb5 18. axb5 Rc7 19. Bd2 Rcf7 20. Bc3 Qd7 {The
online audience were baying for Kramnik to 'launch' 20...Qh4,
but this may just get in the way of Black's actual plan.}
21. f3 {Kramnik now begins a bold King's-side pawn advance.}
g5 22. Ne3 Rf4 23. Rfe1 h5 {Black's play looks loosening but
at least he has a plan to improve his position. By going so
consistently for exchanges, White may have robbed himself of
any serious activity.} 24. Qc2 Qf7 25. h3 Bd4 26. Bxd4 {Black
faces an important choice. Kramnik of course spent some time
considering 26...cxd4, but could not find enough in its favour
at the board. His actual choice allows White to play a
liquidating combination. } Rxd4 27. Nf5 Qxf5 28. Qxf5 Rxf5
29. Rxe8+ Kf7 30. Rb8 Rdxd5 {Here the immediate ...Rd2
deserves attention. } 31. Rxa7+ Ke6 32. Re8+ Kf6 {The dust has
cleared, with an apparently level position. Leko now produces
the sort of move which might produce further clarification,
but which might simply create weaknesses. In fact, it turns
out to be the latter. White should play 33 Rh7! Kramnik now
devotes renewed energy to probing White's position. } 33. g4
hxg4 34. hxg4 Rd1+ 35. Kf2 Re5 36. Rh8 Rd2+ 37. Kg3 Ree2
{Given the looming mating net, White forces an exchange of
rooks.} 38. Rf8+ Kg6 39. Rg8+ Kf6 40. Rf8+ Ke6 41. Re8+ Kd5
42. Rxe2 Rxe2 43. Rg7 Re5 {Another example of trying to reach
the end of a story too soon. Everyone 'knew' that White was
completely lost in this position. But Garry Kasparov,
commenting on www.playchess.com, declared to some general
surprise, "Wait a minute. After 44.Rb7, White has chances to
draw." According to chessbase.com, "In spite of harsh
contradiction by the heavily armed spectators (equipped with
Fritz, Junior and even the 16-processor Hydra) Kasparov stuck
to his analysis, which Leko went on to play, almost move by
move. GM Jon Levitt called it 'a magical draw'."} 44. Rb7 c4
45. Rxb6 Re2 46. f4 {!! The key move in Kasparov's analysis,
and a defensive move of genius.} Re3+ 47. Kf2 gxf4 48. Rb8 Rb3
49. b6 {It seems that 49 g5 Ke5 50 b6 Rxb2+ 51 Kf3 holds the
draw} Ke4 {Kramnik's major alternative was 49...Rxb2+. All
night the computers whirred and the kibitzers muttered... One
chessgames.com kibitzer amongst many, Honza Cervenka gave
49...Rxb2+ as a win for Black after 50 Kf3 c3 e.g. 51 Rc8 (51
g5 fails to the neat trick 51...Rxb6! 52 Rxb6 c2) 51...Kd4 52
g5 (52 Rc6 d5 53 g5 c2 54 g6 Rxb6 55 Rxc2 Rxg6 56 Kxf4 Rf6+ 57
Kg5 Rf1) 52...Rxb6 53 g6 Rb7 54 Kxf4 d5 55 Kg5 Kd3 56 Kf6
d4. ChessBase gave instead 51 b7, marking it "winning for
Black" but analysing 51...Kd4 52.Rd8 Rxb7 53.Rxd6+ Kc5 54.Rd1
Rf7 55.g5 Kc4 56.g6 Rf8 57.g7 Rg8 58.Rd7 c2 59.Rc7+ Kd3
60.Rd7+ Kc3 61.Rc7+ Kd2 62.Rd7+ Kc1 63.Kxf4=} 50. Re8+
{Dionyseus queries this move, giving instead 50 g5 Rxb2+ 51
Ke1 c3 (simply "-+" ChessBase) and analysing 52 g6 Rb1+ 53 Kf2
c2 54 Rc8 Rb2 55 Ke1 Rxb6 56 g7 Rb1+ 57 Kf2 Rb2 58 Kf1 c1=Q+
59 Rxc1 Rb8 60 Kf2 Rg8 61 Re1+ Kf5 62 Rd1 Rxg7 63 Rxd6 with a
draw.} Kd3 {It's likely that this move lost the last chance of
holding the win. 50...Kd4! avoids the defensive plan chosen by
Leko during the game, and now neither 51 g5 Rxb2+ 52 Kf3 Rxb6
nor 51.Rb8 Rxb2+ 52.Kf3 c3 53.b7 c2 54.Rc8 Rb3 save White. The
best defence 51 Re2 can now be met with 51...f3!, which is
possible with the black king on d4 instead of d3. Now on 52
Rd2+ (also losing are 52 Re1 [ChessBase] and 52 Re6 [acirce] )
52...Ke4 White loses after both 53 Rc2 d5 54 Kg3 Rxb6 55 g5
d4–+ and 53 Rxd6 Rxb2+ 54 Kg3 f2 55 Kg2 c3 56 Rc6 c2 57 b7
Kd3-+. 'acirce' gave a long analysis of the position but the
conclusion remains the same: Black has a win with the accurate
50...Kd4!} 51. Re2 d5 52. Kf3 d4 53. g5 c3 54. bxc3 dxc3
55. Rg2 Rb2 56. b7 Rxb7 57. Kxf4 Rb2 58. Rg1 c2 59. Rc1 Rb1
60. Rxc2 Kxc2 61. g6 Kd3 62. Kf5 Rb5+ 63. Kf6 Rb6+ 64. Kf7
Rxg6 65. Kxg6 {Draw agreed. The players finally agree that
there is little left to play for in this position.} 1/2-1/2
SmashedFrenzy16 commented 1 year ago

Hi there, happy learning and coding!