[Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "1"] [White "Botvinnik, Mikhail"] [Black "Spassky, Boris V"] [Result "1/2-1/2"] [ECO "D31"] [PlyCount "50"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. g4 Be6 8. h4 Nd7 9. h5 Qb6 10. Rb1 Ngf6 11. f3 h6 12. Bd3 Qa5 13. Nge2 b5 14. Nc1 Qd8 15. Nb3 O-O 16. Ne2 a5 17. Ng3 a4 18. Nc1 c5 19. Nf5 Bxf5 20. Bxf5 cxd4 21. exd4 Qb6 22. Ne2 Bd6 23. Qd2 Bxf4 24. Nxf4 Rfe8+ 25. Kf1 Nb8 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "1"] [White "Larsen, Bent"] [Black "Spassky, Boris V"] [Result "1/2-1/2"] [ECO "A01"] [PlyCount "67"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. b3 e5 2. Bb2 Nc6 3. c4 Nf6 4. e3 d5 5. cxd5 Nxd5 6. a3 Bd6 7. Qc2 O-O 8. Nf3 Qe7 9. Nc3 Nxc3 10. Qxc3 f5 11. Bb5 e4 12. Bxc6 bxc6 13. Ne5 c5 14. b4 cxb4 15. axb4 Bb7 16. Ra4 a6 17. O-O f4 18. exf4 Rxf4 19. b5 axb5 20. Rxa8+ Bxa8 21. Qb3+ Kh8 22. Qxb5 Rf8 23. h3 Qe8 24. Qxe8 Rxe8 25. Nf7+ Kg8 26. Nxd6 cxd6 27. Ra1 Bb7 28. Kh2 Kf7 29. Ra5 g6 30. h4 Ke6 31. Kg3 Ra8 32. Rb5 Bc6 33. Rb6 Kd5 34. Bc3 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "1"] [White "Spassky, Boris V"] [Black "Donner, Jan Hein"] [Result "1-0"] [ECO "C13"] [PlyCount "51"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. Nf3 Bd7 8. Qd2 Bc6 9. Nxf6+ Qxf6 10. Ne5 O-O 11. O-O-O Rd8 12. Qe3 Be8 13. g3 Nd7 14. Bg2 c6 15. f4 Qe7 16. h4 f6 17. Nf3 Bh5 18. Bh3 Bxf3 19. Qxf3 Nf8 20. Rhe1 Qf7 21. Bf1 Rd6 22. Bc4 Rad8 23. f5 Rxd4 24. fxe6 Rxd1+ 25. Rxd1 Rxd1+ 26. Qxd1 1-0 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "2"] [White "Donner, Jan Hein"] [Black "Spassky, Boris V"] [Result "1/2-1/2"] [ECO "A61"] [PlyCount "48"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Bg7 8. Nc4 O-O 9. Bf4 Ne8 10. Qd2 b6 11. e3 Ba6 12. a4 Bxc4 13. Bxc4 Nd7 14. O-O Ne5 15. Be2 f5 16. e4 a6 17. exf5 gxf5 18. Bg3 Qd7 19. f4 Ng6 20. Rab1 Ra7 21. b4 Bxc3 22. Qxc3 Qxa4 23. bxc5 bxc5 24. Ra1 Qd7 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "2"] [White "Spassky, Boris V"] [Black "Botvinnik, Mikhail"] [Result "1/2-1/2"] [ECO "B19"] [PlyCount "132"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Qc7 11. Rh4 e6 12. Bf4 Bd6 13. Bxd6 Qxd6 14. Ne4 Qb4+ 15. Qc3 Qxc3+ 16. bxc3 Ke7 17. Nc5 Ngf6 18. Nxb7 Rhc8 19. Ne5 c5 20. Na5 Rc7 21. O-O-O Rac8 22. Nxd7 Nxd7 23. d5 exd5 24. Rxd5 Nb6 25. Re5+ Kf8 26. Nb3 c4 27. Nd4 Rc5 28. Rhe4 Nd7 29. Rf5 Rxf5 30. Nxf5 Rc5 31. g4 g6 32. hxg6 fxg6 33. Nxh6 Nf6 34. Re6 Kg7 35. f4 Nh7 36. f5 Nf8 37. Re8 Ra5 38. Kd2 Kxh6 39. Rxf8 Kg7 40. Rc8 gxf5 41. gxf5 Rxa2 42. Ke3 Kf6 43. Ke4 Rxc2 44. Rc6+ Kf7 45. Rxc4 a5 46. Rc7+ Kf6 47. Rc6+ Kf7 48. Kd4 Rf2 49. Ke5 Re2+ 50. Kd5 Rf2 51. Rc7+ Kf6 52. Ra7 Ra2 53. c4 a4 54. c5 a3 55. c6 Rd2+ 56. Kc5 Rc2+ 57. Kd6 Rd2+ 58. Kc7 a2 59. Ra5 Rc2 60. Kd7 Rd2+ 61. Kc8 Rc2 62. c7 Rd2 63. Kb7 Rb2+ 64. Kc6 Rc2+ 65. Kd7 Rd2+ 66. Ke8 Re2+ 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "2"] [White "Spassky, Boris V"] [Black "Larsen, Bent"] [Result "1/2-1/2"] [ECO "B80"] [PlyCount "82"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bd3 Nc6 7. Nb3 a6 8. O-O b5 9. f4 Qb6+ 10. Kh1 Bb7 11. Qe2 Be7 12. a4 b4 13. Nb1 O-O 14. a5 Qc7 15. Be3 e5 16. f5 d5 17. Bb6 Qd7 18. N1d2 Nd4 19. Bxd4 dxe4 20. Nxe4 exd4 21. Nxf6+ Bxf6 22. Nc5 Qc7 23. Nxb7 Qxb7 24. Rfe1 Ra7 25. Qe4 Qd7 26. Qf4 h6 27. Re4 Qd5 28. b3 Qc5 29. h4 Re7 30. g3 Re5 31. Rxe5 Bxe5 32. Qf2 Qc6+ 33. Kh2 Qf6 34. Kg2 Bc7 35. Re1 Bxa5 36. Qf4 Bd8 37. Qe5 Qb6 38. Qd5 Bf6 39. Qd7 Qb8 40. Bc4 Be5 41. f6 Bxf6 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "3"] [White "Botvinnik, Mikhail"] [Black "Spassky, Boris V"] [Result "1/2-1/2"] [ECO "A26"] [PlyCount "58"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e4 d6 6. d3 Nge7 7. Nge2 O-O 8. O-O Bd7 9. Nd5 Rb8 10. Bg5 f6 11. Be3 f5 12. Qd2 Nxd5 13. cxd5 Nd4 14. Nxd4 exd4 15. Bg5 Qc8 16. Rac1 Rf7 17. Bh6 Bxh6 18. Qxh6 Bb5 19. Rfd1 c5 20. dxc6 bxc6 21. b3 c5 22. e5 Qe6 23. exd6 Qxd6 24. Qf4 Qxf4 25. gxf4 Rc7 26. Bd5+ Kf8 27. Bc4 a5 28. Bxb5 Rxb5 29. Rc4 Rb4 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "3"] [White "Larsen, Bent"] [Black "Spassky, Boris V"] [Result "0-1"] [ECO "D27"] [PlyCount "48"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 Nc6 8. Qe2 cxd4 9. Rd1 Be7 10. exd4 O-O 11. Nc3 Nd5 12. Ne5 Nxc3 13. bxc3 Nxe5 14. Qxe5 Bd6 15. Qh5 Qc7 16. Rd3 Qxc4 17. Rh3 f6 18. Qxh7+ Kf7 19. Qh5+ Ke7 20. Qh7 Rf7 21. Ba3 Bxa3 22. Rxa3 Bd7 23. Rg3 g5 24. Qb1 Bc6 0-1 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "3"] [White "Spassky, Boris V"] [Black "Donner, Jan Hein"] [Result "1/2-1/2"] [ECO "B99"] [PlyCount "136"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 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. g4 b5 11. Bxf6 gxf6 12. f5 Ne5 13. Qh3 O-O 14. Nce2 Kh8 15. Nf4 Rg8 16. fxe6 fxe6 17. Nfxe6 Bxe6 18. Nxe6 Qd7 19. Nd4 Qxg4 20. Qxg4 Nxg4 21. Nf5 Nf2 22. Nxe7 Rge8 23. Nd5 Nxh1 24. Nc7 Nf2 25. Rd4 Rac8 26. Nxe8 Rxe8 27. Bg2 Rg8 28. Bf3 Ng4 29. Rxd6 Nxh2 30. Be2 Rg2 31. Kd1 Ng4 32. Bxg4 Rxg4 33. Rxf6 Rxe4 34. Rxa6 Kg7 35. Ra5 b4 36. Kd2 Kg6 37. Kd3 Rg4 38. Re5 h5 39. Ke3 Rg2 40. Re4 b3 41. cxb3 Rxb2 42. Ra4 Kg5 43. Kf3 Kf5 44. Ra5+ Kg6 45. Ra8 Kf5 46. Rf8+ Kg5 47. Rg8+ Kf5 48. Rg2 Rb1 49. Rc2 Kg5 50. Rc5+ Kh4 51. Rb5 Rf1+ 52. Kg2 Ra1 53. a4 Kg4 54. Rb4+ Kg5 55. Kf3 Rf1+ 56. Kg3 Rg1+ 57. Kf2 Ra1 58. Kf3 Rf1+ 59. Kg2 Ra1 60. Rb8 h4 61. Kh2 Kg4 62. Rg8+ Kf4 63. Kg2 Ra3 64. Rb8 Ra1 65. Rb4+ Kg5 66. Kh2 Kh5 67. Kh3 Rh1+ 68. Kg2 Ra1 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "4"] [White "Donner, Jan Hein"] [Black "Spassky, Boris V"] [Result "1/2-1/2"] [ECO "E44"] [PlyCount "62"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 b6 6. Nge2 Bb7 7. O-O d5 8. cxd5 exd5 9. a3 Bxc3 10. Nxc3 O-O 11. dxc5 bxc5 12. b4 Nbd7 13. Bb2 Qe7 14. bxc5 Nxc5 15. Bc2 Ba6 16. Re1 Rab8 17. Rb1 Rfd8 18. Ne2 Nfe4 19. f3 Bxe2 20. Qxe2 Nd6 21. Bd4 Rbc8 22. Rbc1 Nc4 23. a4 Qg5 24. Qf2 a5 25. h4 Qh6 26. Red1 Ne6 27. Bf5 Rb8 28. Bxe6 fxe6 29. e4 Qf4 30. exd5 exd5 31. Rb1 Rb4 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "4"] [White "Spassky, Boris V"] [Black "Botvinnik, Mikhail"] [Result "1/2-1/2"] [ECO "B19"] [PlyCount "40"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Qc7 11. Rh4 e6 12. Bf4 Bd6 13. Bxd6 Qxd6 14. Ne4 Qe7 15. O-O-O Ngf6 16. Ned2 O-O-O 17. Nc4 Kb8 18. g3 Nb6 19. Na5 Nc8 20. Qe2 Nd6 1/2-1/2 [Event "Leiden"] [Site "Leiden"] [Date "1970.??.??"] [Round "4"] [White "Spassky, Boris V"] [Black "Larsen, Bent"] [Result "1/2-1/2"] [ECO "A95"] [PlyCount "72"] [EventDate "1970.??.??"] [EventType "tourn"] [EventRounds "4"] [EventCountry "NED"] [SourceTitle "MCL"] [Source "ChessBase"] [SourceDate "1999.07.01"] [SourceVersion "1"] [SourceVersionDate "1999.07.01"] [SourceQuality "1"] 1. d4 f5 2. Nf3 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. c4 c6 7. b3 a5 8. Nc3 d5 9. Bb2 Nbd7 10. e3 Ne4 11. a4 Nxc3 12. Bxc3 b6 13. Ne5 Nxe5 14. dxe5 Ba6 15. Qe2 Qc7 16. Rfd1 Rad8 17. Bb2 Bc5 18. Qc2 Rf7 19. Bf1 Qc8 20. cxd5 cxd5 21. Bxa6 Qxa6 22. Rac1 Rc8 23. Qd3 Qxd3 24. Rxd3 g5 25. Bd4 Rfc7 26. Rdc3 g4 27. h4 Kf7 28. Kf1 Ke8 29. Ke2 Kd7 30. Kd3 h5 31. R3c2 Rc6 32. Rc3 Bb4 33. Rxc6 Rxc6 34. Rxc6 Kxc6 35. Ke2 b5 36. Kd3 Bf8 1/2-1/2