Author: Mike Byrne
Date: 18:32:12 11/18/04
Crafty Classic 2004 has 4 new personalities - Anand , Chigorin, Kramnik and
Leko.
Amazingly, the Leko personality find this Leko drawing move, 46... f4! played
in the 2004 World Championship relatively quickly and follow the line played in
the game for several moves. (Note: Standard Crafty 19.17 finds f4! as well ,
just one ply deeper.)
Crafty Classic and the GM opening books are available for free at this website.
For each GM personality, the GM books are based on the moves actually played by
GM in real games.
http://www.crafty-chess.com/
White(1): kra leko
personality name .................. Leko
personality setting..................50
queen value..........................940
rook value...........................510
bishop value.........................305
knight value.........................305
pawn value...........................100
book random (0=off)............ .....1
book selection width.................5
delay time limit,(0=off:1=on)........0
draw score setting...................0
search depth.........................0
special edition code (1=off:0=on)....0
time usage setting (0=normal)........0
king safety asymmetry................-40
king safety scale.............. .....90
king safety tropism..................110
pass pawn scale......................115
pawn block scale............... .....110
pawn scale..................... .... 100
incheck extension setting............48
mate extension setting...............45
one response extension setting.......30
pawn push extension setting..........48
recapture extension setting..........42
start extension setting..............36
Personality book success! opened [d:\crafty\SEbook/Leko.bin].
White(1): [d]8/8/1R1p4/1P1k2p1/2p3P1/5PK1/1P2r3/8 w - - 1 46
White(1): g
end-game phase
time surplus 0.00 time limit 1000:00 (1000:00)
time surplus 0.00 time limit 1000:00 (1000:00)
depth time score variation (1)
starting thread 1
9 0.13 -0.86 1. Rb8 Rxb2 2. b6 Rb3 3. Kf2 c3 4.
Rc8 Kd4 5. Rc6
9-> 0.13 -0.86 1. Rb8 Rxb2 2. b6 Rb3 3. Kf2 c3 4.
Rc8 Kd4 5. Rc6
10 0.22 -1.07 1. Rb8 Rxb2 2. b6 c3 3. Rc8 Kd4 4.
Rc6 c2 5. b7 Rxb7 6. Rxc2 Rd7
10-> 0.25 -1.07 1. Rb8 Rxb2 2. b6 c3 3. Rc8 Kd4 4.
Rc6 c2 5. b7 Rxb7 6. Rxc2 Rd7
11 0.55 -1.39 1. Rb8 Rxb2 2. b6 Kd4 3. f4 c3 4. fxg5
c2 5. Rc8 Kd3 6. b7 Rxb7 7. g6
11-> 0.67 -1.39 1. Rb8 Rxb2 2. b6 Kd4 3. f4 c3 4. fxg5
c2 5. Rc8 Kd3 6. b7 Rxb7 7. g6
12 1.36 -1.39 1. Rb8 Rxb2 2. b6 Kd4 3. f4 c3 4. fxg5
c2 5. Rc8 Rb3+ 6. Kf2 Kd3 7. b7 Rxb7
8. g6
12-> 1.56 -1.39 1. Rb8 Rxb2 2. b6 Kd4 3. f4 c3 4. fxg5
c2 5. Rc8 Rb3+ 6. Kf2 Kd3 7. b7 Rxb7
8. g6
13 2.95 -1.65 1. Rb8 Rxb2 2. b6 Kd4 3. f4 gxf4+ 4.
Kxf4 c3 5. g5 c2 6. Rc8 Kd3 7. g6 Rb4+
8. Kf5 Rxb6
13 9.28 -1.46 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rg3 4.
b6 Rxg4 5. Rf8 Kc6 6. Kf3 Rg3+ 7. Kxf4
Rb3 8. Rc8+ Kxb6 9. Rxc4 Rxb2
13-> 9.28 -1.46 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rg3 4.
b6 Rxg4 5. Rf8 Kc6 6. Kf3 Rg3+ 7. Kxf4
Rb3 8. Rc8+ Kxb6 9. Rxc4 Rxb2
14 17.50 -1.41 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rb3 4.
g5 Rxb2+ 5. Kf3 Ke5 6. g6 Rb3+ 7. Kg4
Kf6 8. Rc8 c3 9. Rg8 Rxb5 10. Kxf4
14-> 18.36 -1.41 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rb3 4.
g5 Rxb2+ 5. Kf3 Ke5 6. g6 Rb3+ 7. Kg4
Kf6 8. Rc8 c3 9. Rg8 Rxb5 10. Kxf4
15 38.34 -1.64 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rb3 4.
b6 Ke4 5. Re8+ Kd4 6. Re2 f3 7. Rd2+
Ke5 8. g5 d5 9. b7 d4
15-> 54.16 -1.64 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rb3 4.
b6 Ke4 5. Re8+ Kd4 6. Re2 f3 7. Rd2+
Ke5 8. g5 d5 9. b7 d4 (s=2)
16 1:57 -1.61 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rg3 4.
b6 Rxg4 5. Rc8 Rg7 6. b3 cxb3 7. Rc3
Rb7 8. Rxb3 Kc5 9. Kf3 Rxb6 10. Rxb6
Kxb6 11. Kxf4
16-> 2:07 -1.61 1. f4 Re3+ 2. Kf2 gxf4 3. Rb8 Rg3 4.
b6 Rxg4 5. Rc8 Rg7 6. b3 cxb3 7. Rc3
Rb7 8. Rxb3 Kc5 9. Kf3 Rxb6 10. Rxb6
Kxb6 11. Kxf4
[Event "Classical World Chess Championship"]
[Site "Brissago SUI"]
[Date "2004.10.16"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Leko"]
[Black "Kramnik"]
[ECO "A61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "2"]
1. d4 {(Notes by Raymond Keene - posted on www.chessgames.com ) 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
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