Please turn on javascript in your browser to play chess.
Only Chess Forum

Only Chess Forum

  1. 09 Jan '09 10:06
    Since I’ve been analysing games I have heard the same questions asked time & time again:
    How would the best GM’s fare against Fritz when using the 30 second top 3 matchup system?
    How do you know what is humanly possible and what is cheating?

    Well the short answer is that I’ve had to previously go on the word of much stronger and more experienced players who I’ve had communications with.
    I decided that this was not sufficient.

    A recurring “truism” is that no human player can consistently match Fritz or any other engine in many games over time and once out of database to a greater extent than averages of
    Top 1 Match: 60%
    Top 2 Match: 75%
    Top 3 Match: 85%
    and anyone who exceeds these stats is without doubt using an engine.
    A minimum of 20 games against tough opposition, chosen objectively - i.e. 1 or 2 complete tournament performance(s) - all with 20+ non-book moves is often sufficient to prove or disprove a case.

    So I decided to go straight to the source.

    20 games with plenty of out of book moves played by 2 of the all time greats at the peak of their powers, in possibly the most famous chess match.
    Fischer in particular is often praised with being one of the most tactically accurate and least blunder-prone GM’s in the history of the game. Here he is playing at the absolute height of his powers.

    So, how does he do? How well does Spassky fare in comparison?
    Let’s see…

    The same setup was used for all 20 games:

    Fritz 11 @ 30 seconds per move
    Pentium 4 2.93GHz 1GB RAM
    Hash Table 192MB
    Database used www.chesslive.de

    For obvious reasons a game is classed as “out of book” once I cannot find the position in the chesslive database prior to the 1972 Fischer-Spassky World Championship.


    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "1"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1-0"]
    [ECO "E56"]
    [PlyCount "111"]
    [EventDate "1972.??.??"]

    1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 O-O 6. Bd3 c5 7. O-O Nc6 8. a3
    Ba5 9. Ne2 dxc4 10. Bxc4 Bb6 11. dxc5 Qxd1 12. Rxd1 Bxc5 13. b4 Be7 14. Bb2 Bd7
    {Takes game out of book; 2nd choice} 15. Rac1 {3rd choice} Rfd8 {1st choice}
    16. Ned4 {Not in top 3} Nxd4 {1st choice} 17. Nxd4 {3rd choice} Ba4 {1st choice
    } 18. Bb3 {1st choice} Bxb3 {1st choice} 19. Nxb3 {1st choice} Rxd1+ {
    1st choice} 20. Rxd1 {Only move} Rc8 {1st choice} 21. Kf1 {2nd choice} Kf8 {
    Not in top 3} 22. Ke2 {1st choice} Ne4 {1st choice} 23. Rc1 {1st choice} Rxc1 {
    1st choice} 24. Bxc1 {1st choice} f6 {Not in top 3} 25. Na5 {2nd choice} Nd6 {
    1st choice} 26. Kd3 {1st choice} Bd8 {1st choice} 27. Nc4 {Not in top 3} Bc7 {
    Not in top 3} 28. Nxd6 {2nd choice} Bxd6 {1st choice} 29. b5 {Not in top 3}
    Bxh2 {1st choice} 30. g3 {1st choice} h5 {2nd choice} 31. Ke2 {2nd choice} h4 {
    2nd choice} 32. Kf3 {1st choice} Ke7 {1st choice} 33. Kg2 {3rd choice} hxg3 {
    2nd choice} 34. fxg3 {1st choice} Bxg3 {1st choice} 35. Kxg3 {1st choice} Kd6 {
    1st choice} 36. a4 {3rd choice} Kd5 {1st choice} 37. Ba3 {1st choice} Ke4 {
    2nd choice} 38. Bc5 {2nd choice} a6 {1st choice} 39. b6 {2nd choice} f5 {
    1st choice} 40. Kh4 {1st choice} f4 {2nd choice} 41. exf4 {1st choice} Kxf4 {
    1st choice} 42. Kh5 {2nd choice} Kf5 {2nd choice} 43. Be3 {3rd choice} Ke4 {
    1st choice} 44. Bf2 {Not in top 3} Kf5 {2nd choice} 45. Bh4 {1st choice} e5 {
    1st choice} 46. Bg5 {2nd choice} e4 {2nd choice} 47. Be3 {2nd choice} Kf6 {
    1st choice} 48. Kg4 {1st choice} Ke5 {2nd choice} 49. Kg5 {Not in top 3} Kd5 {
    1st choice} 50. Kf5 {3rd choice} a5 {1st choice} 51. Bf2 {1st choice} g5 {
    1st choice} 52. Kxg5 {1st choice} Kc4 {1st choice} 53. Kf5 {2nd choice} Kb4 {
    2nd choice} 54. Kxe4 {1st choice} Kxa4 {1st choice} 55. Kd5 {1st choice} Kb5 {
    1st choice} 56. Kd6 {2nd choice} 1-0

    Result:
    White: Spassky
    Top 1 Match: 19/42 (45,2% )
    Top 2 Match: 30/42 (71,4% )
    Top 3 Match: 36/42 (85,7% )

    Black: Fischer
    Top 1 Match: 28/42 (66,7% )
    Top 2 Match: 39/42 (92,9% )
    Top 3 Match: 39/42 (92,9% )
  2. 09 Jan '09 10:06
    Round 2 – game defaulted – Spassky wins



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "3"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "0-1"]
    [ECO "A77"]
    [PlyCount "82"]
    [EventDate "1972.??.??"]

    1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Nbd7 8. e4
    Bg7 9. Be2 O-O 10. O-O Re8 11. Qc2 Nh5 {Takes game out of book; Not in top 3}
    12. Bxh5 {Not in top 3} gxh5 {1st choice} 13. Nc4 {1st choice} Ne5 {1st choice}
    14. Ne3 {2nd choice} Qh4 {Not in top 3} 15. Bd2 {1st choice} Ng4 {1st choice}
    16. Nxg4 {2nd choice} hxg4 {1st choice} 17. Bf4 {Not in top 3} Qf6 {1st choice}
    18. g3 {Not in top 3} Bd7 {1st choice} 19. a4 {1st choice} b6 {2nd choice} 20.
    Rfe1 {2nd choice} a6 {1st choice} 21. Re2 {Not in top 3} b5 {2nd choice} 22.
    Rae1 {1st choice} Qg6 {1st choice} 23. b3 {Not in top 3} Re7 {3rd choice} 24.
    Qd3 {3rd choice} Rb8 {1st choice} 25. axb5 {Not in top 3} axb5 {1st choice} 26.
    b4 {Not in top 3} c4 {1st choice} 27. Qd2 {2nd choice} Rbe8 {1st choice} 28.
    Re3 {3rd choice} h5 {2nd choice} 29. R3e2 {Not in top 3} Kh7 {Not in top 3} 30.
    Re3 {1st choice} Kg8 {Not in top 3} 31. R3e2 {1st choice} Bxc3 {2nd choice} 32.
    Qxc3 {1st choice} Rxe4 {1st choice} 33. Rxe4 {1st choice} Rxe4 {1st choice} 34.
    Rxe4 {2nd choice} Qxe4 {1st choice} 35. Bh6 {2nd choice} Qg6 {1st choice} 36.
    Bc1 {1st choice} Qb1 {2nd choice} 37. Kf1 {Not in top 3} Bf5 {1st choice} 38.
    Ke2 {3rd choice} Qe4+ {1st choice} 39. Qe3 {1st choice} Qc2+ {1st choice} 40.
    Qd2 {1st choice} Qb3 {1st choice} 41. Qd4 {2nd choice} Bd3+ {1st choice} 0-1

    Result:
    White: Spassky
    Top 1 Match: 11/30 (36,7% )
    Top 2 Match: 18/30 (60,0% )
    Top 3 Match: 21/30 (70,0% )

    Black: Fischer
    Top 1 Match: 21/31 (67,7% )
    Top 2 Match: 26/31 (83,9% )
    Top 3 Match: 27/31 (87,1% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "4"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "B88"]
    [PlyCount "89"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Bb3 Be7 8.
    Be3 O-O 9. O-O a6 10. f4 Nxd4 11. Bxd4 b5 12. a3 {
    Takes game out of book; 1st choice} Bb7 {1st choice} 13. Qd3 {2nd choice} a5 {
    Not in top 3} 14. e5 {1st choice} dxe5 {1st choice} 15. fxe5 {1st choice} Nd7 {
    1st choice} 16. Nxb5 {1st choice} Nc5 {1st choice} 17. Bxc5 {Not in top 3}
    Bxc5+ {1st choice} 18. Kh1 {1st choice} Qg5 {3rd choice} 19. Qe2 {2nd choice}
    Rad8 {1st choice} 20. Rad1 {1st choice} Rxd1 {1st choice} 21. Rxd1 {1st choice}
    h5 {2nd choice} 22. Nd6 {1st choice} Ba8 {1st choice} 23. Bc4 {1st choice} h4 {
    2nd choice} 24. h3 {1st choice} Be3 {1st choice} 25. Qg4 {1st choice} Qxe5 {
    1st choice} 26. Qxh4 {1st choice} g5 {2nd choice} 27. Qg4 {2nd choice} Bc5 {
    3rd choice} 28. Nb5 {2nd choice} Kg7 {1st choice} 29. Nd4 {3rd choice} Rh8 {
    Not in top 3} 30. Nf3 {1st choice} Bxf3 {1st choice} 31. Qxf3 {1st choice} Bd6
    {3rd choice} 32. Qc3 {1st choice} Qxc3 {1st choice} 33. bxc3 {1st choice} Be5 {
    1st choice} 34. Rd7 {1st choice} Kf6 {1st choice} 35. Kg1 {3rd choice} Bxc3 {
    1st choice} 36. Be2 {1st choice} Be5 {Not in top 3} 37. Kf1 {1st choice} Rc8 {
    Not in top 3} 38. Bh5 {2nd choice} Rc7 {1st choice} 39. Rxc7 {1st choice} Bxc7
    {1st choice} 40. a4 {2nd choice} Ke7 {1st choice} 41. Ke2 {2nd choice} f5 {
    1st choice} 42. Kd3 {Not in top 3} Be5 {2nd choice} 43. c4 {3rd choice} Kd6 {
    1st choice} 44. Bf7 {1st choice} Bg3 {3rd choice} 45. c5+ {1st choice} ½

    Result:
    White: Fischer
    Top 1 Match: 22/34 (64,7% )
    Top 2 Match: 29/34 (85,3% )
    Top 3 Match: 32/34 (94,1% )

    Black: Spassky
    Top 1 Match: 21/33 (63,6% )
    Top 2 Match: 25/33 (75,8% )
    Top 3 Match: 29/33 (87,9% )
  3. 09 Jan '09 10:07
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "5"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "0-1"]
    [ECO "E41"]
    [PlyCount "54"]
    [EventDate "1972.??.??"]

    1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 Nc6 6. Bd3 Bxc3+ 7. bxc3 d6 8. e4
    e5 9. d5 Ne7 10. Nh4 h6 11. f4 Ng6 12. Nxg6 fxg6 13. fxe5 {
    Takes game out of book; 1st choice} dxe5 {1st choice} 14. Be3 {Not in top 3} b6
    {Not in top 3} 15. O-O {1st choice} O-O {1st choice} 16. a4 {1st choice} a5 {
    Not in top 3} 17. Rb1 {Not in top 3} Bd7 {1st choice} 18. Rb2 {Not in top 3}
    Rb8 {3rd choice} 19. Rbf2 {1st choice} Qe7 {1st choice} 20. Bc2 {Not in top 3}
    g5 {2nd choice} 21. Bd2 {1st choice} Qe8 {Not in top 3} 22. Be1 {Not in top 3}
    Qg6 {1st choice} 23. Qd3 {Not in top 3} Nh5 {2nd choice} 24. Rxf8+ {1st choice}
    Rxf8 {1st choice} 25. Rxf8+ {1st choice} Kxf8 {1st choice} 26. Bd1 {
    Not in top 3} Nf4 {1st choice} 27. Qc2 {Not in top 3} Bxa4 {1st choice} 0-1

    Result:
    White: Spassky
    Top 1 Match: 7/15 (46,7% )
    Top 2 Match: 7/15 (46,7% )
    Top 3 Match: 7/15 (46,7% )

    Black: Fischer
    Top 1 Match: 9/15 (60,0% )
    Top 2 Match: 11/15 (73,3% )
    Top 3 Match: 12/15 (80,0% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "6"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1-0"]
    [ECO "D59"]
    [PlyCount "81"]
    [EventDate "1972.??.??"]

    1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 b6 8. cxd5
    Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Be6 12. Qa4 c5 13. Qa3 Rc8 14. Bb5 a6
    15. dxc5 bxc5 16. O-O Ra7 17. Be2 Nd7 {Takes game out of book; 1st choice} 18.
    Nd4 {1st choice} Qf8 {2nd choice} 19. Nxe6 {1st choice} fxe6 {1st choice} 20.
    e4 {1st choice} d4 {Not in top 3} 21. f4 {1st choice} Qe7 {Not in top 3} 22. e5
    {1st choice} Rb8 {1st choice} 23. Bc4 {1st choice} Kh8 {2nd choice} 24. Qh3 {
    2nd choice} Nf8 {Not in top 3} 25. b3 {3rd choice} a5 {1st choice} 26. f5 {
    2nd choice} exf5 {1st choice} 27. Rxf5 {1st choice} Nh7 {1st choice} 28. Rcf1 {
    2nd choice} Qd8 {3rd choice} 29. Qg3 {1st choice} Re7 {1st choice} 30. h4 {
    2nd choice} Rbb7 {1st choice} 31. e6 {2nd choice} Rbc7 {3rd choice} 32. Qe5 {
    1st choice} Qe8 {3rd choice} 33. a4 {Not in top 3} Qd8 {1st choice} 34. R1f2 {
    Not in top 3} Qe8 {1st choice} 35. R2f3 {2nd choice} Qd8 {1st choice} 36. Bd3 {
    Not in top 3} Qe8 {Not in top 3} 37. Qe4 {2nd choice} Nf6 {1st choice} 38. Rxf6
    {1st choice} gxf6 {1st choice} 39. Rxf6 {1st choice} Kg8 {1st choice} 40. Bc4 {
    2nd choice} Kh8 {Not in top 3} 41. Qf4 {1st choice} 1-0

    Result:
    White: Fischer
    Top 1 Match: 12/24 (50,0% )
    Top 2 Match: 20/24 (83,3% )
    Top 3 Match: 21/24 (87,5% )

    Black: Spassky
    Top 1 Match: 14/24 (58,3% )
    Top 2 Match: 16/24 (66,7% )
    Top 3 Match: 19/24 (79,2% )
  4. 09 Jan '09 10:07
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "7"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1/2"]
    [ECO "B97"]
    [PlyCount "97"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2
    Qxb2 9. Nb3 Qa3 10. Bd3 Be7 11. O-O h6 12. Bh4 Nxe4 13. Nxe4 {
    Takes game out of book; 2nd choice} Bxh4 {1st choice} 14. f5 {2nd choice} exf5
    {1st choice} 15. Bb5+ {Not in top 3} axb5 {2nd choice} 16. Nxd6+ {1st choice}
    Kf8 {1st choice} 17. Nxc8 {1st choice} Nc6 {1st choice} 18. Nd6 {Not in top 3}
    Rd8 {1st choice} 19. Nxb5 {1st choice} Qe7 {1st choice} 20. Qf4 {1st choice} g6
    {1st choice} 21. a4 {Not in top 3} Bg5 {2nd choice} 22. Qc4 {2nd choice} Be3+ {
    2nd choice} 23. Kh1 {1st choice} f4 {Not in top 3} 24. g3 {1st choice} g5 {
    2nd choice} 25. Rae1 {2nd choice} Qb4 {Not in top 3} 26. Qxb4+ {2nd choice}
    Nxb4 {1st choice} 27. Re2 {Not in top 3} Kg7 {1st choice} 28. Na5 {1st choice}
    b6 {2nd choice} 29. Nc4 {1st choice} Nd5 {1st choice} 30. Ncd6 {3rd choice} Bc5
    {2nd choice} 31. Nb7 {1st choice} Rc8 {1st choice} 32. c4 {Not in top 3} Ne3 {
    1st choice} 33. Rf3 {1st choice} Nxc4 {1st choice} 34. gxf4 {1st choice} g4 {
    1st choice} 35. Rd3 {3rd choice} h5 {Not in top 3} 36. h3 {1st choice} Na5 {
    Not in top 3} 37. N7d6 {2nd choice} Bxd6 {2nd choice} 38. Nxd6 {1st choice}
    Rc1+ {1st choice} 39. Kg2 {1st choice} Nc4 {1st choice} 40. Ne8+ {1st choice}
    Kg6 {1st choice} 41. h4 {Not in top 3} f6 {1st choice} 42. Re6 {1st choice}
    Rc2+ {1st choice} 43. Kg1 {1st choice} Kf5 {2nd choice} 44. Ng7+ {1st choice}
    Kxf4 {1st choice} 45. Rd4+ {1st choice} Kg3 {1st choice} 46. Nf5+ {1st choice}
    Kf3 {1st choice} 47. Ree4 {1st choice} Rc1+ {1st choice} 48. Kh2 {1st choice}
    Rc2+ {1st choice} 49. Kg1 {1st choice} 1/2

    Result:
    White: Spassky
    Top 1 Match: 23/37 (62,2% )
    Top 2 Match: 29/37 (78,4% )
    Top 3 Match: 31/37 (83,8% )

    Black: Fischer
    Top 1 Match: 24/36 (66,7% )
    Top 2 Match: 32/36 (88,9% )
    Top 3 Match: 32/36 (88,9% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "8"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1-0"]
    [ECO "A39"]
    [PlyCount "73"]
    [EventDate "1972.??.??"]

    1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 cxd4 8.
    Nxd4 Nxd4 9. Qxd4 d6 10. Bg5 Be6 11. Qf4 {Takes game out of book; Not in top 3}
    Qa5 {2nd choice} 12. Rac1 {1st choice} Rab8 {3rd choice} 13. b3 {3rd choice}
    Rfc8 {1st choice} 14. Qd2 {3rd choice} a6 {1st choice} 15. Be3 {1st choice} b5
    {Not in top 3} 16. Ba7 {1st choice} bxc4 {1st choice} 17. Bxb8 {1st choice}
    Rxb8 {1st choice} 18. bxc4 {1st choice} Bxc4 {2nd choice} 19. Rfd1 {1st choice}
    Nd7 {Not in top 3} 20. Nd5 {1st choice} Qxd2 {1st choice} 21. Nxe7+ {1st choice
    } Kf8 {1st choice} 22. Rxd2 {1st choice} Kxe7 {1st choice} 23. Rxc4 {1st choice
    } Rb1+ {1st choice} 24. Bf1 {1st choice} Nc5 {1st choice} 25. Kg2 {1st choice}
    a5 {1st choice} 26. e4 {2nd choice} Ba1 {Not in top 3} 27. f4 {1st choice} f6 {
    1st choice} 28. Re2 {Not in top 3} Ke6 {Not in top 3} 29. Rec2 {1st choice} Bb2
    {2nd choice} 30. Be2 {2nd choice} h5 {Not in top 3} 31. Rd2 {Not in top 3} Ba3
    {3rd choice} 32. f5+ {1st choice} gxf5 {1st choice} 33. exf5+ {1st choice} Ke5
    {1st choice} 34. Rcd4 {1st choice} Kxf5 {1st choice} 35. Rd5+ {1st choice} Ke6
    {1st choice} 36. Rxd6+ {1st choice} Ke7 {1st choice} 37. Rc6 {Not in top 3} 1-0

    Result:
    White: Fischer
    Top 1 Match: 19/27 (70,4% )
    Top 2 Match: 21/27 (77,8% )
    Top 3 Match: 23/27 (85,2% )

    Black: Spassky
    Top 1 Match: 16/26 (61,5% )
    Top 2 Match: 19/26 (73,1% )
    Top 3 Match: 21/26 (80,8% )
  5. 09 Jan '09 10:07
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "9"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1/2"]
    [ECO "D41"]
    [PlyCount "58"]
    [EventDate "1972.??.??"]

    1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8.
    cxd4 Nc6 9. Bc4 b5 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 a6 13. a4 {
    Takes game out of book; 3rd choice} O-O {1st choice} 14. Qc3 {Not in top 3} Bb7
    {1st choice} 15. axb5 {1st choice} axb5 {1st choice} 16. O-O {2nd choice} Qb6 {
    2nd choice} 17. Rab1 {1st choice} b4 {1st choice} 18. Qd2 {Not in top 3} Nxd4 {
    Not in top 3} 19. Nxd4 {1st choice} Qxd4 {1st choice} 20. Rxb4 {1st choice} Qd7
    {1st choice} 21. Qe3 {2nd choice} Rfd8 {1st choice} 22. Rfb1 {Not in top 3}
    Qxd3 {1st choice} 23. Qxd3 {1st choice} Rxd3 {1st choice} 24. Rxb7 {1st choice}
    g5 {2nd choice} 25. Rb8+ {Not in top 3} Rxb8 {1st choice} 26. Rxb8+ {1st choice
    } Kg7 {1st choice} 27. f3 {2nd choice} Rd2 {1st choice} 28. h4 {Not in top 3}
    h6 {3rd choice} 29. hxg5 {1st choice} hxg5 {1st choice} 1/2

    Result:
    White: Spassky
    Top 1 Match: 8/17 (47,1% )
    Top 2 Match: 11/17 (64,7% )
    Top 3 Match: 12/17 (70,6% )

    Black: Fischer
    Top 1 Match: 13/17 (76,5% )
    Top 2 Match: 15/17 (88,2% )
    Top 3 Match: 16/17 (94,1% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "10"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1-0"]
    [ECO "C95"]
    [PlyCount "111"]
    [EventDate "1972.??.??"]

    1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
    O-O 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. b4 Bf8 14. a4 Nb6 15. a5
    Nbd7 16. Bb2 Qb8 17. Rb1 {Takes game out of book; Not in top 3} c5 {
    Not in top 3} 18. bxc5 {2nd choice} dxc5 {1st choice} 19. dxe5 {1st choice}
    Nxe5 {1st choice} 20. Nxe5 {1st choice} Qxe5 {1st choice} 21. c4 {1st choice}
    Qf4 {1st choice} 22. Bxf6 {1st choice} Qxf6 {1st choice} 23. cxb5 {1st choice}
    Red8 {1st choice} 24. Qc1 {1st choice} Qc3 {2nd choice} 25. Nf3 {2nd choice}
    Qxa5 {2nd choice} 26. Bb3 {Not in top 3} axb5 {1st choice} 27. Qf4 {1st choice}
    Rd7 {2nd choice} 28. Ne5 {1st choice} Qc7 {1st choice} 29. Rbd1 {1st choice}
    Re7 {1st choice} 30. Bxf7+ {1st choice} Rxf7 {1st choice} 31. Qxf7+ {1st choice
    } Qxf7 {1st choice} 32. Nxf7 {1st choice} Bxe4 {1st choice} 33. Rxe4 {
    2nd choice} Kxf7 {1st choice} 34. Rd7+ {2nd choice} Kf6 {1st choice} 35. Rb7 {
    Not in top 3} Ra1+ {1st choice} 36. Kh2 {1st choice} Bd6+ {1st choice} 37. g3 {
    1st choice} b4 {1st choice} 38. Kg2 {2nd choice} h5 {2nd choice} 39. Rb6 {
    3rd choice} Rd1 {1st choice} 40. Kf3 {1st choice} Kf7 {Not in top 3} 41. Ke2 {
    1st choice} Rd5 {1st choice} 42. f4 {1st choice} g6 {3rd choice} 43. g4 {
    Not in top 3} hxg4 {1st choice} 44. hxg4 {1st choice} g5 {3rd choice} 45. f5 {
    2nd choice} Be5 {1st choice} 46. Rb5 {1st choice} Kf6 {Not in top 3} 47. Rexb4
    {1st choice} Bd4 {1st choice} 48. Rb6+ {Not in top 3} Ke5 {1st choice} 49. Kf3
    {3rd choice} Rd8 {3rd choice} 50. Rb8 {Not in top 3} Rd7 {1st choice} 51. R4b7
    {1st choice} Rd6 {1st choice} 52. Rb6 {1st choice} Rd7 {1st choice} 53. Rg6 {
    2nd choice} Kd5 {3rd choice} 54. Rxg5 {1st choice} Be5 {Not in top 3} 55. f6 {
    1st choice} Kd4 {1st choice} 56. Rb1 {1st choice} 1-0

    Result:
    White: Fischer
    Top 1 Match: 25/40 (62,5% )
    Top 2 Match: 32/40 (80,0% )
    Top 3 Match: 34/40 (85,0% )

    Black: Spassky
    Top 1 Match: 26/39 (66,7% )
    Top 2 Match: 31/39 (79,5% )
    Top 3 Match: 35/39 (89,7% )
  6. 09 Jan '09 10:08
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "11"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1-0"]
    [ECO "B97"]
    [PlyCount "61"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2
    Qxb2 9. Nb3 Qa3 10. Bxf6 gxf6 11. Be2 h5 12. O-O Nc6 13. Kh1 Bd7 14. Nb1 {
    Takes game out of book; 1st choice} Qb4 {3rd choice} 15. Qe3 {1st choice} d5 {
    1st choice} 16. exd5 {1st choice} Ne7 {1st choice} 17. c4 {2nd choice} Nf5 {
    1st choice} 18. Qd3 {1st choice} h4 {Not in top 3} 19. Bg4 {1st choice} Nd6 {
    Not in top 3} 20. N1d2 {1st choice} f5 {1st choice} 21. a3 {1st choice} Qb6 {
    2nd choice} 22. c5 {1st choice} Qb5 {3rd choice} 23. Qc3 {1st choice} fxg4 {
    Not in top 3} 24. a4 {1st choice} h3 {Not in top 3} 25. axb5 {1st choice} hxg2+
    {1st choice} 26. Kxg2 {1st choice} Rh3 {1st choice} 27. Qf6 {3rd choice} Nf5 {
    2nd choice} 28. c6 {1st choice} Bc8 {3rd choice} 29. dxe6 {1st choice} fxe6 {
    1st choice} 30. Rfe1 {1st choice} Be7 {1st choice} 31. Rxe6 {1st choice} 1-0

    Result:
    White: Spassky
    Top 1 Match: 16/18 (88,9% )
    Top 2 Match: 17/18 (94,4% )
    Top 3 Match: 18/18 (100,0% )

    Black: Fischer
    Top 1 Match: 8/17 (47,1% )
    Top 2 Match: 10/17 (58,8% )
    Top 3 Match: 13/17 (76,5% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "12"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "D66"]
    [PlyCount "110"]
    [EventDate "1972.??.??"]

    1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 Nbd7 8. Rc1
    c6 9. Bd3 dxc4 10. Bxc4 b5 11. Bd3 a6 12. a4 bxa4 13. Nxa4 Qa5+ 14. Nd2 Bb4 15.
    Nc3 c5 16. Nb3 Qd8 17. O-O cxd4 18. Nxd4 Bb7 19. Be4 Qb8 {
    Takes game out of book; Not in top 3} 20. Bg3 {2nd choice} Qa7 {1st choice} 21.
    Nc6 {1st choice} Bxc6 {1st choice} 22. Bxc6 {1st choice} Rac8 {2nd choice} 23.
    Na4 {2nd choice} Rfd8 {2nd choice} 24. Bf3 {2nd choice} a5 {3rd choice} 25. Rc6
    {Not in top 3} Rxc6 {1st choice} 26. Bxc6 {1st choice} Rc8 {3rd choice} 27. Bf3
    {3rd choice} Qa6 {1st choice} 28. h3 {3rd choice} Qb5 {1st choice} 29. Be2 {
    2nd choice} Qc6 {1st choice} 30. Bf3 {1st choice} Qb5 {1st choice} 31. b3 {
    1st choice} Be7 {1st choice} 32. Be2 {2nd choice} Qb4 {3rd choice} 33. Ba6 {
    1st choice} Rc6 {1st choice} 34. Bd3 {3rd choice} Nc5 {2nd choice} 35. Qf3 {
    3rd choice} Rc8 {3rd choice} 36. Nxc5 {1st choice} Bxc5 {1st choice} 37. Rc1 {
    1st choice} Rd8 {1st choice} 38. Bc4 {2nd choice} Qd2 {1st choice} 39. Rf1 {
    1st choice} Bb4 {1st choice} 40. Bc7 {1st choice} Rd7 {1st choice} 41. Qc6 {
    3rd choice} Qc2 {1st choice} 42. Be5 {2nd choice} Rd2 {1st choice} 43. Qa8+ {
    3rd choice} Kh7 {1st choice} 44. Bxf6 {1st choice} gxf6 {1st choice} 45. Qf3 {
    Not in top 3} f5 {1st choice} 46. g4 {3rd choice} Qe4 {1st choice} 47. Kg2 {
    1st choice} Kg6 {1st choice} 48. Rc1 {2nd choice} Ba3 {2nd choice} 49. Ra1 {
    3rd choice} Bb4 {3rd choice} 50. Rc1 {1st choice} Be7 {3rd choice} 51. gxf5+ {
    1st choice} exf5 {2nd choice} 52. Re1 {1st choice} Rxf2+ {Not in top 3} 53.
    Kxf2 {1st choice} Bh4+ {1st choice} 54. Ke2 {1st choice} Qxf3+ {1st choice} 55.
    Kxf3 {1st choice} Bxe1 {1st choice} 1/2

    Result:
    White: Fischer
    Top 1 Match: 19/36 (52,8% )
    Top 2 Match: 27/36 (75,0% )
    Top 3 Match: 34/36 (94,4% )

    Black: Spassky
    Top 1 Match: 24/37 (64,9% )
    Top 2 Match: 29/37 (78,4% )
    Top 3 Match: 35/37 (94,6% )
  7. 09 Jan '09 10:08
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "13"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "0-1"]
    [ECO "B04"]
    [PlyCount "148"]
    [EventDate "1972.??.??"]

    1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Nbd2 {
    Takes game out of book; Not in top 3} O-O {1st choice} 8. h3 {Not in top 3} a5
    {3rd choice} 9. a4 {2nd choice} dxe5 {1st choice} 10. dxe5 {1st choice} Na6 {
    3rd choice} 11. O-O {2nd choice} Nc5 {1st choice} 12. Qe2 {2nd choice} Qe8 {
    3rd choice} 13. Ne4 {Not in top 3} Nbxa4 {2nd choice} 14. Bxa4 {Not in top 3}
    Nxa4 {1st choice} 15. Re1 {Not in top 3} Nb6 {2nd choice} 16. Bd2 {Not in top 3
    } a4 {1st choice} 17. Bg5 {3rd choice} h6 {1st choice} 18. Bh4 {3rd choice} Bf5
    {Not in top 3} 19. g4 {Not in top 3} Be6 {1st choice} 20. Nd4 {Not in top 3}
    Bc4 {2nd choice} 21. Qd2 {2nd choice} Qd7 {2nd choice} 22. Rad1 {2nd choice}
    Rfe8 {Not in top 3} 23. f4 {3rd choice} Bd5 {1st choice} 24. Nc5 {1st choice}
    Qc8 {1st choice} 25. Qc3 {1st choice} e6 {Not in top 3} 26. Kh2 {3rd choice}
    Nd7 {3rd choice} 27. Nd3 {Not in top 3} c5 {1st choice} 28. Nb5 {1st choice}
    Qc6 {1st choice} 29. Nd6 {1st choice} Qxd6 {1st choice} 30. exd6 {1st choice}
    Bxc3 {1st choice} 31. bxc3 {1st choice} f6 {1st choice} 32. g5 {3rd choice}
    hxg5 {1st choice} 33. fxg5 {1st choice} f5 {1st choice} 34. Bg3 {Not in top 3}
    Kf7 {2nd choice} 35. Ne5+ {1st choice} Nxe5 {1st choice} 36. Bxe5 {1st choice}
    b5 {1st choice} 37. Rf1 {2nd choice} Rh8 {Not in top 3} 38. Bf6 {3rd choice} a3
    {Not in top 3} 39. Rf4 {Not in top 3} a2 {1st choice} 40. c4 {2nd choice} Bxc4
    {1st choice} 41. d7 {1st choice} Bd5 {1st choice} 42. Kg3 {1st choice} Ra3+ {
    1st choice} 43. c3 {1st choice} Rha8 {Not in top 3} 44. Rh4 {1st choice} e5 {
    1st choice} 45. Rh7+ {1st choice} Ke6 {1st choice} 46. Re7+ {1st choice} Kd6 {
    Only move} 47. Rxe5 {1st choice} Rxc3+ {1st choice} 48. Kf2 {1st choice} Rc2+ {
    1st choice} 49. Ke1 {1st choice} Kxd7 {1st choice} 50. Rexd5+ {1st choice} Kc6
    {1st choice} 51. Rd6+ {1st choice} Kb7 {1st choice} 52. Rd7+ {2nd choice} Ka6 {
    1st choice} 53. R7d2 {2nd choice} Rxd2 {1st choice} 54. Kxd2 {1st choice} b4 {
    1st choice} 55. h4 {1st choice} Kb5 {2nd choice} 56. h5 {1st choice} c4 {
    1st choice} 57. Ra1 {2nd choice} gxh5 {1st choice} 58. g6 {1st choice} h4 {
    1st choice} 59. g7 {2nd choice} h3 {1st choice} 60. Be7 {Not in top 3} Rg8 {
    2nd choice} 61. Bf8 {1st choice} h2 {2nd choice} 62. Kc2 {1st choice} Kc6 {
    3rd choice} 63. Rd1 {Not in top 3} b3+ {1st choice} 64. Kc3 {2nd choice} h1=Q {
    Not in top 3} 65. Rxh1 {1st choice} Kd5 {2nd choice} 66. Kb2 {Not in top 3} f4
    {1st choice} 67. Rd1+ {2nd choice} Ke4 {1st choice} 68. Rc1 {1st choice} Kd3 {
    2nd choice} 69. Rd1+ {Not in top 3} Ke2 {1st choice} 70. Rc1 {1st choice} f3 {
    1st choice} 71. Bc5 {1st choice} Rxg7 {1st choice} 72. Rxc4 {1st choice} Rd7 {
    2nd choice} 73. Re4+ {1st choice} Kf1 {1st choice} 74. Bd4 {1st choice} f2 {
    1st choice} 0-1

    White: Spassky
    Top 1 Match: 34/68 (50,0% )
    Top 2 Match: 47/68 (69,1% )
    Top 3 Match: 53/68 (77,9% )

    Black: Fischer
    Top 1 Match: 44/68 (64,7% )
    Top 2 Match: 55/68 (80,9% )
    Top 3 Match: 60/68 (88,2% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "14"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "D37"]
    [PlyCount "80"]
    [EventDate "1972.??.??"]

    1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Nc6 8. cxd5
    exd5 9. Be2 Bxc5 10. O-O Be6 11. Rc1 Rc8 12. a3 {
    Takes game out of book; 3rd choice} h6 {Not in top 3} 13. Bg3 {Not in top 3}
    Bb6 {1st choice} 14. Ne5 {Not in top 3} Ne7 {Not in top 3} 15. Na4 {
    Not in top 3} Ne4 {3rd choice} 16. Rxc8 {1st choice} Bxc8 {2nd choice} 17. Nf3
    {1st choice} Bd7 {Not in top 3} 18. Be5 {Not in top 3} Bxa4 {2nd choice} 19.
    Qxa4 {1st choice} Nc6 {1st choice} 20. Bf4 {2nd choice} Qf6 {2nd choice} 21.
    Bb5 {Not in top 3} Qxb2 {1st choice} 22. Bxc6 {1st choice} Nc3 {1st choice} 23.
    Qb4 {1st choice} Qxb4 {1st choice} 24. axb4 {1st choice} bxc6 {1st choice} 25.
    Be5 {2nd choice} Nb5 {1st choice} 26. Rc1 {1st choice} Rc8 {2nd choice} 27. Nd4
    {1st choice} f6 {3rd choice} 28. Bxf6 {1st choice} Bxd4 {3rd choice} 29. Bxd4 {
    1st choice} Nxd4 {1st choice} 30. exd4 {1st choice} Rb8 {1st choice} 31. Kf1 {
    2nd choice} Rxb4 {1st choice} 32. Rxc6 {1st choice} Rxd4 {3rd choice} 33. Ra6 {
    1st choice} Kf7 {1st choice} 34. Rxa7+ {1st choice} Kf6 {1st choice} 35. Rd7 {
    2nd choice} h5 {1st choice} 36. Ke2 {1st choice} g5 {2nd choice} 37. Ke3 {
    2nd choice} Re4+ {3rd choice} 38. Kd3 {1st choice} Ke6 {3rd choice} 39. Rg7 {
    Not in top 3} Kf6 {2nd choice} 40. Rd7 {3rd choice} Ke6 {1st choice} ½

    Result:
    White: Fischer
    Top 1 Match: 16/29 (55,2% )
    Top 2 Match: 21/29 (72,4% )
    Top 3 Match: 23/29 (79,3% )

    Black: Spassky
    Top 1 Match: 14/29 (48,3% )
    Top 2 Match: 20/29 (69,0% )
    Top 3 Match: 26/29 (89,7% )
  8. 09 Jan '09 10:08
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "15"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1/2"]
    [ECO "B99"]
    [PlyCount "86"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
    Qc7 9. O-O-O Nbd7 10. Bd3 b5 11. Rhe1 Bb7 12. Qg3 O-O-O 13. Bxf6 Nxf6 14. Qxg7
    Rdf8 15. Qg3 b4 16. Na4 Rhg8 17. Qf2 Nd7 18. Kb1 Kb8 {
    Takes game out of book; 2nd choice} 19. c3 {Not in top 3} Nc5 {1st choice} 20.
    Bc2 {1st choice} bxc3 {2nd choice} 21. Nxc3 {1st choice} Bf6 {3rd choice} 22.
    g3 {3rd choice} h5 {Not in top 3} 23. e5 {3rd choice} dxe5 {1st choice} 24.
    fxe5 {1st choice} Bh8 {1st choice} 25. Nf3 {Not in top 3} Rd8 {1st choice} 26.
    Rxd8+ {Not in top 3} Rxd8 {1st choice} 27. Ng5 {Not in top 3} Bxe5 {1st choice}
    28. Qxf7 {1st choice} Rd7 {3rd choice} 29. Qxh5 {1st choice} Bxc3 {1st choice}
    30. bxc3 {1st choice} Qb6+ {1st choice} 31. Kc1 {2nd choice} Qa5 {1st choice}
    32. Qh8+ {3rd choice} Ka7 {1st choice} 33. a4 {3rd choice} Nd3+ {2nd choice}
    34. Bxd3 {1st choice} Rxd3 {1st choice} 35. Kc2 {1st choice} Rd5 {2nd choice}
    36. Re4 {1st choice} Rd8 {Not in top 3} 37. Qg7 {1st choice} Qf5 {1st choice}
    38. Kb3 {Not in top 3} Qd5+ {Not in top 3} 39. Ka3 {1st choice} Qd2 {2nd choice
    } 40. Rb4 {1st choice} Qc1+ {1st choice} 41. Rb2 {1st choice} Qa1+ {1st choice}
    42. Ra2 {1st choice} Qc1+ {2nd choice} 43. Rb2 {1st choice} Qa1+ {1st choice} 1/2

    White: Spassky
    Top 1 Match: 16/25 (64,0% )
    Top 2 Match: 16/25 (64,0% )
    Top 3 Match: 20/25 (80,0% )

    Black: Fischer
    Top 1 Match: 15/26 (57,7% )
    Top 2 Match: 21/26 (80,8% )
    Top 3 Match: 23/26 (88,5% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "16"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "C69"]
    [PlyCount "120"]
    [EventDate "1972.??.??"]

    1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 Bg4 7. dxe5 Qxd1 8.
    Rxd1 fxe5 9. Rd3 Bd6 10. Nbd2 Nf6 11. Nc4 Nxe4 12. Ncxe5 {
    Takes game out of book; 3rd choice} Bxf3 {1st choice} 13. Nxf3 {1st choice} O-O
    {1st choice} 14. Be3 {1st choice} b5 {Not in top 3} 15. c4 {Not in top 3} Rab8
    {2nd choice} 16. Rc1 {Not in top 3} bxc4 {1st choice} 17. Rd4 {2nd choice} Rfe8
    {1st choice} 18. Nd2 {1st choice} Nxd2 {1st choice} 19. Rxd2 {1st choice} Re4 {
    1st choice} 20. g3 {2nd choice} Be5 {1st choice} 21. Rcc2 {1st choice} Kf7 {
    1st choice} 22. Kg2 {2nd choice} Rxb2 {1st choice} 23. Kf3 {1st choice} c3 {
    2nd choice} 24. Kxe4 {1st choice} cxd2 {1st choice} 25. Rxd2 {1st choice} Rb5 {
    3rd choice} 26. Rc2 {1st choice} Bd6 {1st choice} 27. Rxc6 {1st choice} Ra5 {
    3rd choice} 28. Bf4 {3rd choice} Ra4+ {2nd choice} 29. Kf3 {1st choice} Ra3+ {
    1st choice} 30. Ke4 {3rd choice} Rxa2 {1st choice} 31. Bxd6 {2nd choice} cxd6 {
    1st choice} 32. Rxd6 {3rd choice} Rxf2 {1st choice} 33. Rxa6 {3rd choice} Rxh2
    {1st choice} 34. Kf3 {2nd choice} Rd2 {1st choice} 35. Ra7+ {Not in top 3} Kf6
    {1st choice} 36. Ra6+ {Not in top 3} Ke7 {1st choice} 37. Ra7+ {3rd choice} Rd7
    {1st choice} 38. Ra2 {1st choice} Ke6 {3rd choice} 39. Kg2 {Not in top 3} Re7 {
    Not in top 3} 40. Kh3 {Not in top 3} Kf6 {1st choice} 41. Ra6+ {3rd choice} Re6
    {1st choice} 42. Ra5 {Not in top 3} h6 {Not in top 3} 43. Ra2 {Not in top 3}
    Kf5 {Not in top 3} 44. Rf2+ {Not in top 3} Kg5 {1st choice} 45. Rf7 {1st choice
    } g6 {1st choice} 46. Rf4 {Not in top 3} h5 {1st choice} 47. Rf3 {Not in top 3}
    Rf6 {Not in top 3} 48. Ra3 {1st choice} Re6 {Not in top 3} 49. Rf3 {1st choice}
    Re4 {1st choice} 50. Ra3 {Not in top 2} Kh6 {Not in top 3} 51. Ra6 {
    Not in top 3} Re5 {Not in top 3} 52. Kh4 {1st choice} Re4+ {Not in top 3} 53.
    Kh3 {1st choice} Re7 {Not in top 3} 54. Kh4 {1st choice} Re5 {Not in top 3} 55.
    Rb6 {Not in top 3} Kg7 {Not in top 3} 56. Rb4 {2nd choice} Kh6 {Not in top 3}
    57. Rb6 {1st choice} Re1 {2nd choice} 58. Kh3 {1st choice} Rh1+ {Not in top 3}
    59. Kg2 {Only move} Ra1 {3rd choice} 60. Kh3 {Not in top 3} Ra4 {Not in top 3}
    1/2

    Result:
    White: Fischer
    Top 1 Match: 20/49 (40,8% )
    Top 2 Match: 26/49 (53,1% )
    Top 3 Match: 33/49 (67,3% )

    Black: Spassky
    Top 1 Match: 26/49 (53,1% )
    Top 2 Match: 30/49 (61,2% )
    Top 3 Match: 34/49 (69,4% )
  9. 09 Jan '09 10:08
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.01.18"]
    [Round "17"]
    [White "Boris Spassky"]
    [Black "Robert James Fischer"]
    [Result "1/2"]
    [ECO "B09"]
    [PlyCount "89"]
    [EventDate "1972.??.??"]

    1. e4 d6 2. d4 g6 3. Nc3 Nf6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2
    O-O 9. Be3 Qa5 10. O-O Bg4 11. Rad1 Nc6 12. Bc4 Nh5 13. Bb3 Bxc3 14. bxc3 Qxc3
    15. f5 Nf6 {Takes game out of book; 1st choice} 16. h3 {2nd choice} Bxf3 {
    1st choice} 17. Qxf3 {1st choice} Na5 {Not in top 3} 18. Rd3 {2nd choice} Qc7 {
    3rd choice} 19. Bh6 {Not in top 3} Nxb3 {1st choice} 20. cxb3 {2nd choice} Qc5+
    {1st choice} 21. Kh1 {1st choice} Qe5 {Not in top 3} 22. Bxf8 {1st choice} Rxf8
    {1st choice} 23. Re3 {1st choice} Rc8 {1st choice} 24. fxg6 {3rd choice} hxg6 {
    1st choice} 25. Qf4 {Not in top 3} Qxf4 {3rd choice} 26. Rxf4 {1st choice} Nd7
    {Not in top 3} 27. Rf2 {1st choice} Ne5 {Not in top 3} 28. Kh2 {1st choice} Rc1
    {Not in top 3} 29. Ree2 {1st choice} Nc6 {2nd choice} 30. Rc2 {1st choice} Re1
    {1st choice} 31. Rfe2 {2nd choice} Ra1 {1st choice} 32. Kg3 {3rd choice} Kg7 {
    1st choice} 33. Rcd2 {3rd choice} Rf1 {3rd choice} 34. Rf2 {Not in top 3} Re1 {
    1st choice} 35. Rfe2 {Not in top 3} Rf1 {1st choice} 36. Re3 {Not in top 3} a6
    {Not in top 3} 37. Rc3 {1st choice} Re1 {2nd choice} 38. Rc4 {1st choice} Rf1 {
    Not in top 3} 39. Rdc2 {2nd choice} Ra1 {1st choice} 40. Rf2 {Not in top 3} Re1
    {1st choice} 41. Rfc2 {Not in top 3} g5 {Not in top 3} 42. Rc1 {Not in top 3}
    Re2 {1st choice} 43. R1c2 {3rd choice} Re1 {1st choice} 44. Rc1 {Not in top 3}
    Re2 {1st choice} 45. R1c2 {3rd choice} 1/2

    White: Spassky
    Top 1 Match: 12/30 (40,0% )
    Top 2 Match: 17/30 (56,7% )
    Top 3 Match: 21/30 (70,0% )

    Black: Fischer
    Top 1 Match: 16/30 (53,3% )
    Top 2 Match: 18/30 (60,0% )
    Top 3 Match: 22/30 (73,3% )



    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "18"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "B69"]
    [PlyCount "94"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. Qd2 a6 8.
    O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. Bd3 Qa5 13. Kb1 b4 14. Ne2 Qc5
    15. f5 {Takes game out of book; Not in top 3} a5 {1st choice} 16. Nf4 {
    1st choice} a4 {1st choice} 17. Rc1 {Not in top 3} Rb8 {Not in top 3} 18. c3 {
    Not in top 3} b3 {1st choice} 19. a3 {1st choice} Ne5 {1st choice} 20. Rhf1 {
    Not in top 3} Nc4 {Not in top 3} 21. Bxc4 {2nd choice} Qxc4 {1st choice} 22.
    Rce1 {2nd choice} Kd8 {Not in top 3} 23. Ka1 {Not in top 3} Rb5 {Not in top 3}
    24. Nd4 {Not in top 3} Ra5 {1st choice} 25. Nd3 {2nd choice} Kc7 {Not in top 3}
    26. Nb4 {1st choice} h5 {1st choice} 27. g3 {Not in top 3} Re5 {Not in top 3}
    28. Nd3 {Not in top 3} Rb8 {Not in top 3} 29. Qe2 {Not in top 3} Ra5 {
    1st choice} 30. fxe6 {1st choice} fxe6 {1st choice} 31. Rf2 {2nd choice} e5 {
    Not in top 3} 32. Nf5 {1st choice} Bxf5 {1st choice} 33. Rxf5 {1st choice} d5 {
    1st choice} 34. exd5 {1st choice} Qxd5 {Not in top 3} 35. Nb4 {3rd choice} Qd7
    {1st choice} 36. Rxh5 {2nd choice} Bxb4 {1st choice} 37. cxb4 {1st choice} Rd5
    {1st choice} 38. Rc1+ {Not in top 3} Kb7 {1st choice} 39. Qe4 {2nd choice} Rc8
    {1st choice} 40. Rb1 {1st choice} Kb6 {1st choice} 41. Rh7 {2nd choice} Rd4 {
    1st choice} 42. Qg6 {1st choice} Qc6 {2nd choice} 43. Rf7 {1st choice} Rd6 {
    1st choice} 44. Qh6 {1st choice} Qf3 {3rd choice} 45. Qh7 {Not in top 3} Qc6 {
    Not in top 3} 46. Qh6 {Not in top 3} Qf3 {1st choice} 47. Qh7 {3rd choice} Qc6
    {1st choice} 1/2

    Result:
    White: Fischer
    Top 1 Match: 12/33 (36,4% )
    Top 2 Match: 19/33 (57,6% )
    Top 3 Match: 21/33 (63,6% )

    Black: Spassky
    Top 1 Match: 21/33 (63,6% )
    Top 2 Match: 22/33 (66,7% )
    Top 3 Match: 23/33 (69,7% )
  10. 09 Jan '09 10:09
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "19"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "1/2"]
    [ECO "B05"]
    [PlyCount "80"]
    [EventDate "1972.??.??"]

    1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bh5 8. c4
    Nb6 9. Nc3 O-O 10. Be3 d5 11. c5 Bxf3 12. Bxf3 {
    Takes game out of book; 1st choice} Nc4 {1st choice} 13. b3 {Not in top 3} Nxe3
    {1st choice} 14. fxe3 {1st choice} b6 {Not in top 3} 15. e4 {1st choice} c6 {
    1st choice} 16. b4 {1st choice} bxc5 {2nd choice} 17. bxc5 {1st choice} Qa5 {
    2nd choice} 18. Nxd5 {Not in top 3} Bg5 {1st choice} 19. Bh5 {Not in top 3}
    cxd5 {1st choice} 20. Bxf7+ {2nd choice} Rxf7 {1st choice} 21. Rxf7 {1st choice
    } Qd2 {3rd choice} 22. Qxd2 {1st choice} Bxd2 {1st choice} 23. Raf1 {1st choice
    } Nc6 {1st choice} 24. exd5 {2nd choice} exd5 {1st choice} 25. Rd7 {
    Not in top 3} Be3+ {1st choice} 26. Kh1 {1st choice} Bxd4 {1st choice} 27. e6 {
    1st choice} Be5 {2nd choice} 28. Rxd5 {1st choice} Re8 {1st choice} 29. Re1 {
    Not in top 3} Rxe6 {1st choice} 30. Rd6 {1st choice} Kf7 {2nd choice} 31. Rxc6
    {1st choice} Rxc6 {1st choice} 32. Rxe5 {1st choice} Kf6 {2nd choice} 33. Rd5 {
    2nd choice} Ke6 {2nd choice} 34. Rh5 {1st choice} h6 {1st choice} 35. Kh2 {
    3rd choice} Ra6 {1st choice} 36. c6 {1st choice} Rxc6 {2nd choice} 37. Ra5 {
    1st choice} a6 {2nd choice} 38. Kg3 {1st choice} Kf6 {3rd choice} 39. Kf3 {
    2nd choice} Rc3+ {Not in top 3} 40. Kf2 {3rd choice} Rc2+ {1st choice} 1/2

    White: Spassky
    Top 1 Match: 18/29 (62,1% )
    Top 2 Match: 22/29 (75,9% )
    Top 3 Match: 24/29 (82,8% )

    Black: Fischer
    Top 1 Match: 17/29 (58,6% )
    Top 2 Match: 25/29 (86,2% )
    Top 3 Match: 27/29 (93,1% )




    [Event "Blitz:25'"]
    [Site "?"]
    [Date "1972.07.11"]
    [Round "20"]
    [White "Fischer, Robert James"]
    [Black "Spassky, Boris V"]
    [Result "1/2"]
    [ECO "B68"]
    [PlyCount "108"]
    [TimeControl "1500"]

    1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8.
    O-O-O Bd7 9. f4 Be7 10. Be2 O-O 11. Bf3 {Takes game out of book; Not in top 3}
    h6 {1st choice} 12. Bh4 {1st choice} Nxe4 {Not in top 3} 13. Bxe7 {1st choice}
    Nxd2 {1st choice} 14. Bxd8 {1st choice} Nxf3 {1st choice} 15. Nxf3 {1st choice}
    Rfxd8 {1st choice} 16. Rxd6 {1st choice} Kf8 {2nd choice} 17. Rhd1 {2nd choice}
    Ke7 {2nd choice} 18. Na4 {3rd choice} Be8 {1st choice} 19. Rxd8 {2nd choice}
    Rxd8 {1st choice} 20. Nc5 {1st choice} Rb8 {3rd choice} 21. Rd3 {Not in top 3}
    a5 {Not in top 3} 22. Rb3 {3rd choice} b5 {3rd choice} 23. a3 {2nd choice} a4 {
    Not in top 3} 24. Rc3 {2nd choice} Rd8 {1st choice} 25. Nd3 {2nd choice} f6 {
    1st choice} 26. Rc5 {1st choice} Rb8 {1st choice} 27. Rc3 {2nd choice} g5 {
    2nd choice} 28. g3 {2nd choice} Kd6 {1st choice} 29. Nc5 {1st choice} g4 {
    Not in top 3} 30. Ne4+ {3rd choice} Ke7 {1st choice} 31. Ne1 {3rd choice} Rd8 {
    1st choice} 32. Nd3 {1st choice} Rd4 {Not in top 3} 33. Nef2 {1st choice} h5 {
    1st choice} 34. Rc5 {2nd choice} Rd5 {1st choice} 35. Rc3 {3rd choice} Nd4 {
    2nd choice} 36. Rc7+ {1st choice} Rd7 {1st choice} 37. Rxd7+ {3rd choice} Bxd7
    {1st choice} 38. Ne1 {1st choice} e5 {1st choice} 39. fxe5 {1st choice} fxe5 {
    1st choice} 40. Kd2 {1st choice} Bf5 {2nd choice} 41. Nd1 {2nd choice} Kd6 {
    2nd choice} 42. Ne3 {2nd choice} Be6 {Not in top 3} 43. Kd3 {2nd choice} Bf7 {
    2nd choice} 44. Kc3 {1st choice} Kc6 {Not in top 3} 45. Kd3 {Not in top 3} Kc5
    {Not in top 3} 46. Ke4 {1st choice} Kd6 {1st choice} 47. Kd3 {2nd choice} Bg6+
    {3rd choice} 48. Kc3 {1st choice} Kc5 {Not in top 3} 49. Nd3+ {1st choice} Kd6
    {1st choice} 50. Ne1 {1st choice} Kc6 {2nd choice} 51. Kd2 {1st choice} Kc5 {
    Not in top 3} 52. Nd3+ {1st choice} Kd6 {1st choice} 53. Ne1 {3rd choice} Ne6 {
    Not in top 3} 54. Kc3 {2nd choice} Nd4 {Not in top 3} 1/2

    Result:
    White: Fischer
    Top 1 Match: 21/44 (47,7% )
    Top 2 Match: 34/44 (77,3% )
    Top 3 Match: 41/44 (93,2% )

    Black: Spassky
    Top 1 Match: 21/44 (47,7% )
    Top 2 Match: 30/44 (68,2% )
    Top 3 Match: 33/44 (75,0% )
  11. 09 Jan '09 10:09 / 2 edits
    [Event "World Championship 28th"]
    [Site "Reykjavik"]
    [Date "1972.07.11"]
    [Round "21"]
    [White "Spassky, Boris V"]
    [Black "Fischer, Robert James"]
    [Result "0-1"]
    [ECO "B46"]
    [PlyCount "81"]
    [EventDate "1972.??.??"]

    1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Be3 Nf6 7. Bd3 d5 8.
    exd5 exd5 9. O-O Bd6 10. Nxc6 {Takes game out of book; Not in top 3} bxc6 {
    1st choice} 11. Bd4 {1st choice} O-O {1st choice} 12. Qf3 {Not in top 3} Be6 {
    3rd choice} 13. Rfe1 {1st choice} c5 {2nd choice} 14. Bxf6 {2nd choice} Qxf6 {
    1st choice} 15. Qxf6 {1st choice} gxf6 {1st choice} 16. Rad1 {2nd choice} Rfd8
    {2nd choice} 17. Be2 {Not in top 3} Rab8 {1st choice} 18. b3 {1st choice} c4 {
    1st choice} 19. Nxd5 {2nd choice} Bxd5 {1st choice} 20. Rxd5 {1st choice} Bxh2+
    {2nd choice} 21. Kxh2 {1st choice} Rxd5 {1st choice} 22. Bxc4 {1st choice} Rd2
    {1st choice} 23. Bxa6 {Not in top 3} Rxc2 {1st choice} 24. Re2 {1st choice}
    Rxe2 {1st choice} 25. Bxe2 {1st choice} Rd8 {1st choice} 26. a4 {1st choice}
    Rd2 {1st choice} 27. Bc4 {1st choice} Ra2 {2nd choice} 28. Kg3 {1st choice} Kf8
    {3rd choice} 29. Kf3 {1st choice} Ke7 {1st choice} 30. g4 {3rd choice} f5 {
    1st choice} 31. gxf5 {1st choice} f6 {1st choice} 32. Bg8 {1st choice} h6 {
    Not in top 3} 33. Kg3 {1st choice} Kd6 {1st choice} 34. Kf3 {Not in top 3} Ra1
    {1st choice} 35. Kg2 {1st choice} Ke5 {1st choice} 36. Be6 {1st choice} Kf4 {
    1st choice} 37. Bd7 {1st choice} Rb1 {1st choice} 38. Be6 {1st choice} Rb2 {
    1st choice} 39. Bc4 {1st choice} Ra2 {1st choice} 40. Be6 {3rd choice} h5 {
    1st choice} 41. Bd7 {2nd choice} 0-1

    White: Spassky
    Top 1 Match: 21/32 (65,5% )
    Top 2 Match: 25/32 (78,1% )
    Top 3 Match: 27/32 (84,4% )

    Black: Fischer
    Top 1 Match: 24/31 (77,4% )
    Top 2 Match: 28/31 (90,3% )
    Top 3 Match: 30/31 (96,8% )



    Total results of all analysed games

    Result:
    Fischer
    Top 1 Match: 385/658 (58,5% )
    Top 2 Match: 509/658 (77,4% )
    Top 3 Match: 563/658 (85,6% )

    Spassky
    Top 1 Match: 368/657 (56,0% )
    Top 2 Match: 461/657 (70,2% )
    Top 3 Match: 525/657 (79,9% )

    Conclusion:

    So, in the 1972 Fischer-Spassky match my analysis confirms that Fischer achieved results comparable to the extreme upper limit considered humanly possible/overwhelming evidence of engine use. His top 2 & top 3 matchup rates were actually a small % over this threshold.
    Spassky, an incredibly strong player in his time, attained % rates around the totals that I was secretly expecting Fischer to get.
    So the next time someone shouts from the rooftops that such & such a player is clearly a cheat because they exceeded some of the thresholds of
    Top 1 Match: 60,0%
    Top 2 Match: 75,0%
    Top 3 Match: 85,0%
    and no human CC player can do that in many games with non-book moves, you can point them in the direction of this thread and say yes they can; Fischer achieved this against Spassky, over-the-board nearly 40 years ago!
  12. 09 Jan '09 10:28
    And that was OTB. Much easier to find better moves in CC.
  13. 09 Jan '09 10:42
    When asked about this match, Karpov said "very few good games."
  14. Standard member adam warlock
    Baby Gauss
    09 Jan '09 10:43 / 1 edit
    Total results of all analysed games

    Result:
    Fischer
    Top 1 Match: 385/658 (58,5% )
    Top 2 Match: 509/658 (77,4% )
    Top 3 Match: 563/658 (85,6% )

    Spassky
    Top 1 Match: 368/657 (56,0% )
    Top 2 Match: 461/657 (70,2% )
    Top 3 Match: 525/657 (79,9% )

    Conclusion:

    So, in the 1972 Fischer-Spassky match my analysis confirms that Fischer achieved results comparable to the ext ...[text shortened]... yes they can; Fischer achieved this against Spassky, over-the-board nearly 40 years ago![/b]
    One other thing that I think we should get into account is how the nature of the game changed in the meantime. Computer aided analysis is now a part of any selfrespecting GM (it is even a question of survival), and how the chess style of chess engines has evolved too.

    I'm not a chess savant but I think that the frontiers of human chess style and engine chess style are getting blurred. Rybka is a string example I think. People that know what they are talking about say it has a very human like feel of positions (plus the fact it can evaluate a gazzilion positions per second) and the previous fact I mentioned that more and more people study games with engine help. of course I'm aware that no human will get the ability of evaluation of an engine but I can see a convergence of styles taking this into account. And of course I'm bot talking about the average RHP user but I'm talking the real deal guys like Anand, Carlsen, etc...

    I mean put the game of the century through your chess engine and all of the moves that Fischer got, and are considered extremely original and imaginative, just pop out in seconds.

    So the next time someone shouts from the rooftops that such & such a player is clearly a cheat because they exceeded some of the thresholds of
    Top 1 Match: 60,0%
    Top 2 Match: 75,0%
    Top 3 Match: 85,0%
    and no human CC player can do that in many games with non-book moves, you can point them in the direction of this thread and say yes they can; Fischer achieved this against Spassky, over-the-board nearly 40 years ago!


    Here I don't know if you are being facetious or not, but if any one says such a thing the poor person is just wrong. And he/she is wrong by two reasons:
    1- Things should actually be done in reverse order. One should not not throw a some three numbers and define them to be our threshold. One should adopt the inverse methodology: study a good number of games (in the order of thousands) of the all time greats and see how they match up against the engines (I'd even think that this calibration should be done regularly - if the game evolves and changes why should our calibration be static?) After this is done than a reasonable and rational threshold can and should be defined.

    2- The second wrong thing is that a match up rate can't be enough since we are dealing with a statistical tool to detect the cheats. So, intervals of confidence, or some other statistical indicator, must be used in order for one justify their conclusions. Of course this last step can be ignored but then one shouldn't tell anyone that one is using statistical means to detect cheats because that it isn't statistics.

    And last but not least I thank you for taking the time to do and post this analysis.

    By the way have you thought about doing the same for some other (more recent) championship matches?
  15. 09 Jan '09 10:55
    I'm amazed the Fritz match-up was so high in the Fischer-Spassky match, current wisdom is that the 1972 Fischer would be slaughtered by the likes of Anand, Topalov etc. It looks to me like this is simply incorrect.

    I just don't know what significance these figures have when trying to detect cheats on this site. At the very least they prove that >90% match-ups are possible in OTB games. I guess we have to ask ourselves how close someone isn't one of the greatest players of all time can get to emulating Fischer's statistics, taking into account the fact that they will have longer to think about their moves but will often have dozens of games on the go at once.