These days I have been watching the candidates tournament, and I couldn't avoid noticing that players are reeling/scared of computer home preparation "a little bit too much".
For example:
1) In the game Anand vs Kramnik (round 4), Kramnik at the move 22 just played the "incredible" move Nd4 (home computer preparation), giving the Knight for "free" without any apparent compensation, four moves later we end up understanding that Nd4 just forces a draw:
[FEN ""]
[Event "FIDE Candidates 2014"]
[Site "Khanty-Mansiysk RUS"]
[Date "2014.03.17"]
[Round "4.2"]
[White "Anand, Viswanathan"]
[Black "Kramnik, Vladimir"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2770"]
[BlackElo "2787"]
[ECO "D37"]
[Opening "QGD"]
[Variation "4.Nf3"]
[WhiteFideId "5000017"]
[BlackFideId "4101588"]
[EventDate "2014.03.13"]
[StartPly "43"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 Bb4 6. Bg5 c5 7. Bxc4 cxd4 8. Nxd4 Bxc3+ 9. bxc3 Qa5 10. Bb5+ Nbd7 11. Bxf6 Qxc3+ 12. Kf1 gxf6 13. h4 a6 14. Rh3 Qb4 15. Be2 Ne5 16. h5 Qd6 17. Qd2 Nc6 18. Rd3 Qh2 19. f4 Rg8 20. Bf3 Bd7 21. Ne2 Qh1+ 22. Ng1 Nd4 23. Rxd4 Bb5+ 24. Kf2 Qh4+ 25. Ke3 e5 26. fxe5 Qg5+ 27. Kf2 Qg3+ 28. Ke3 Qg5+ 29. Kf2 Qg3+ 30. Ke3 Qg5+ 1/2-1/2
2) Topalov vs Kramnik (round 6). Kramnik at the end of the game, in the press conference, was "whining" that he lost the game because Topalov had prepared all in home with a computer, almost like suggesting that he lost to a computer:
[FEN ""]
[Event "FIDE Candidates 2014"]
[Site "Khanty-Mansiysk RUS"]
[Date "2014.03.19"]
[Round "6.1"]
[White "Topalov, Veselin"]
[Black "Kramnik, Vladimir"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2785"]
[BlackElo "2787"]
[ECO "D37"]
[Opening "QGD"]
[Variation "classical variation (5.Bf4)"]
[WhiteFideId "2900084"]
[BlackFideId "4101588"]
[EventDate "2014.03.13"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Nh5 8. Be5
c6 9. Bd3 g6 10. h4 f5 11. Bh2 b6 12. b4 f4 13. O-O a5 14. b5 bxc5 15. bxc6 Nb8
16. Bb5 Ba6 17. a4 Qc8 18. dxc5 Nxc6 19. Nxd5 exd5 20. Qxd5+ Kh8 21. Qxc6 Qxc6
22. Bxc6 Rac8 23. Bb5 Bxb5 24. axb5 Bxc5 25. Rxa5 fxe3 26. fxe3 Bxe3+ 27. Kh1
Rc2 28. Rb1 Rfc8 29. Raa1 Bb6 30. Be5+ Kg8 31. Ra6 Be3 32. b6 Rc1+ 33. Rxc1
Rxc1+ 34. Kh2 Rb1 35. g4 Bf4+ 36. Kg2 Bxe5 37. Nxe5 Nf4+ 38. Kf3 Ne6 39. b7 Rb3+
40. Kf2 Rb2+ 41. Ke3 1-0
So, looks like nowadays high-level chess players have to take in consideration when analyzing variations during the game, that some of that variations may be had been analyzed beforehand by his opponent with the help of the computer.
For a fan o chess as I, this computer home preparation takes all the fun of the game, because when for example Tal sacrificed a piece, was awesome because he had to think about it over the board, or at least it was human home preparation. Nowadays, if a player sacrifices a piece on the opening, people will most likely thing that this sacrifice was home computer preparation, so it is not awesome anymore. Looks like the game is becoming more about memorizing sequences of moves.
My question is:
It is true the engines have level up the game, but can we also conclude that engines at a certain level are destroying the human cognitive process or figuring out moves by them selfs over the board (mainly at opening phase)?
How can someone play the game in a way that he can avoid computer home preparation?
Thanks.