Icannos/chess_studies huggingface dataset:
[Event "Candidates' Tournament"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Korchnoi"]
[Result "1-0"]
[PlyCount "43"]

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 d5 6. Bg5 dxc4 7. e3 Qa5 { This early queen sortie gives White the initiative. Better was to develop normally with 7...Bg7. 7...Bg7 8.Bxc4 O-O 9.O-O a6 10.Qe2 b5 11.Bb3 Bb7 12. Rfd1 Qa5 13.e4 when White's centralized pieces give him the edge. } 8. Bxf6 { A strong move which doubles the Black f-pawns and secures the White knight on d4. } 8... exf6 9. Bxc4 Bb4 { 9...Bg7 10.O-O O-O 11.Nd5 Gives the advantage to White due to, his well centralized minor pieces. } 10. Rc1 a6 { Black doesn't have time for this luxury. Better was castling. } 11. O-O Nd7 { White stands much better due to, Black's backward development. } 12. a3 { White also had the more aggresive 12. Nd5. 12.Nd5 Bd6 13.b4 Bxb4 14.Nb3 Wins material for White as Black has no way of answering both threats or 15 Nxb4 and Nc7+. } 12... Be7 { 12...Bxc3 13.Rxc3 would also leave White standing better. Due to, White's better development and better pawn structure. } 13. b4 Qe5 { 13...Qxa3 14.Nd5 when White is threatening 15. Nc7+ or 15. Ra1. } 14. f4 { Black would go down quickly after 14...Qxe3+ 15. Kh1 due to the open king file } 14... Qb8 15. Bxf7+ { With all of Black's pieces on the back two ranks, White is able to start a winning attack. } 15... Kxf7 16. Qb3+ Ke8 { 16...Kg7 17. Ne6+ Kh6 18.Rf3 g5 19.f5 when the Black king would find himself in a mating net. } 17. Nd5 { Although, technically White is down a piece for a pawn, he has a winning position. This is due to, Black's backward development. } 17... Bd6 18. Ne6 { White's pieces quickly move into the disorganized Black camp. } 18... b5 19. Ndc7+ Ke7 20. Nd4 { A perfect example of the saying "when you see a good move look again, you may see a better one". White is in no hurry to gain back material with 20. Nxa8 since the Black rook isn't going anywhere. } 20... Kf8 21. Nxa8 { Black resigned as 21...Qxa8 22. Qe6 Qb8 23 Nc6 Qc7 24 Ne7 would be hopeless. } 21... Qxa8 22. h4 1-0
[Event "Varna Olympiad"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Najdorf"]
[Result "1-0"]
[PlyCount "47"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 b5 7. Nd5 Bb7 { Black should probably take the pawn. White gets an initiative after 8.Qf3, but Black seems to hold. Now Najdorf's king has nowhere to hide. } 8. Nxf6+ gxf6 9. c4 { The kingside is already unsafe, and no Fischer goes to work on the center and the queenside. } 9... bxc4 10. Bxc4 Bxe4 11. O-O d5 12. Re1 { No rest for the weary. Black's last move is shown to have serious drawbacks-- he can't get his bishop back to b7, and his dark squares look weak. } 12... e5 13. Qa4+ Nd7 14. Rxe4 { This sacrifice reopens the a2-g8 diagonal and gives White control of all the light squares in the center. } 14... dxe4 15. Nf5 Bc5 16. Ng7+ { Typically, Fischer's play is ruthlessly accurate. The text allows White to finish his development with the Black king a sitting duck in the center. } 16... Ke7 17. Nf5+ Ke8 18. Be3 { Again, simple but deadly-Black must either lose time retreating the bishop or give up d6. If 18...Qb6, 19.Bxf7+. } 18... Bxe3 19. fxe3 Qb6 20. Rd1 Ra7 21. Rd6 Qd8 22. Qb3 { Now if Black could only castle there would be some hope, but White's 16th move ruled that out. } 22... Qc7 23. Bxf7+ Kd8 24. Be6 { Black is helpless-if he tries 24...Qc1+, after 25.Rd1 he has no way to cover b6 and b8 without giving up d7. } 1-0
[Event "Candidates' Tournament"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Petrosian"]
[Result "0-1"]
[PlyCount "85"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. Bxc3 Ne4 8. Ba5 O-O 9. Bd3 Nc6 { Black develops with tempo at the bishop's expense. } 10. Bc3 Nxc3 11. bxc3 { White is worse because of his doubled c-pawns and backward development. } 11... f6 12. f4 { Since White is lagging behind in development he desperately tries to keep the position closed. 12.exf6 Qxf6 13.Nf3 e5 when Black's initiative would give him a big advantage. } 12... fxe5 13. fxe5 Ne7 { The knight makes way for operations against White's center and queenside. } 14. Nf3 c5 15. O-O Qa5 16. Qe1 Bd7 { Black is building up his forces for an attack against White's doubled c- pawns. } 17. c4 Qxe1 18. Rfxe1 dxc4 19. Be4 { White sacrifices a pawn to free his pieces up. 19.Bxc4 b5 20.Bd3 c4 allows Black to stabilize his queenside advantage. } 19... cxd4 20. Bxb7 Rab8 21. Ba6 Rb4 22. Rad1 d3 { Petrosian eliminates the remaining obstacle and creates a passed pawn. } 23. cxd3 cxd3 24. Rxd3 Bc6 { Black has the advantage due to, the White bishop being offside while his minor pieces have an excellent post on d5. } 25. Rd4 { 25.Nd4 Bd5 would leave the White pieces in each others way. } 25... Rxd4 26. Nxd4 Bd5 27. a4 Rf4 28. Rd1 Ng6 29. Bc8 Kf7 30. a5 Nxe5 31. a6 { With Black being a clear pawn up White's chances rest with the a-pawn. } 31... Rg4 32. Rd2 Nc4 33. Rf2+ Ke7 34. Nb5 Nd6 35. Nxd6 { 35.Nxa7 Rc4 Wins material for Black. } 35... Kxd6 36. Bb7 Bxb7 37. axb7 Kc7 38. h3 { 38.Rf7+ Kb8 39.Kf2 a5 40.Re7 Rg6 41.Rd7 e5 42.Rd5 Ra6 when White has no good way of stopping the a-pawns advance. } 38... Rg5 39. Rb2 Kb8 40. Kf2 Rd5 41. Ke3 Rd7 42. Ke4 Rxb7 43. Rf2 { White resigned because he is two pawns down. } 0-1
[Event "Varna Olympiad"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Ciocaltea"]
[Result "1-0"]
[PlyCount "51"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 Nge7 7. Bb3 h6 { Black can't play 7...Ng6 because of 8.Ng5. } 8. Qe2 Ng6 9. Qc4 { A novel way of confusing the enemy army. 9...Be6 loses a piece after 10.d5 Na5 11.Qa4+, so Black must either play 9...Qe7, completely locking up his own kingside, or expose his queen on f6. } 9... Qf6 10. d5 b5 { Otherwise White just captures on c7 and gets away. } 11. Qe2 Na5 12. Bd1 Be7 13. g3 { Black would have done better to simplify with 12...Nh4 or f4, to get some space on the kingside. Fischer prevents that and sets a nasty trap as well. } 13... O-O 14. h4 Rfc8 { The losing move. Black had to play 14...Nh8 or Bd8 to save the queen, though things look grim then too. } 15. Bg5 hxg5 16. hxg5 Qxg5 { Black would do better with 16...Nf4, though it doesn't matter much, since after 16.gxf6 Nxe2 17.fxe7 Nc1 18.Kd2 he's down a piece. } 17. Nxg5 Bxg5 18. Na3 c6 19. dxc6 Be6 20. Qh5 Bh6 21. Bg4 Bxg4 22. Qxg4 Nxc6 23. Rd1 b4 24. Nc4 bxc3 25. bxc3 Nd4 26. Nb6 1-0
[Event "Stockholm Interzonal"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Bertok"]
[Result "1-0"]
[PlyCount "67"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. e3 e6 6. Bxc4 c5 7. O-O b5 8. Bb3 Bb7 9. Qe2 Nbd7 10. Rd1 Bd6 11. e4 cxd4 12. Rxd4 Bc5 { 12...Qb8 13.Rxd6 Qxd6 14.e5 Bxf3 15.Qxf3 Qxe5 16.Bf4 After which White wins the rook on a8. } 13. Rd3 Ng4 { A natural and energetic response to the threat of e5. 13...Qb8 Also gains control of the e5 square. } 14. Bg5 { Developing the bishop with a gain of tempo. } 14... Qb6 { 14...Bxf2+ 15.Kf1 Qb6 16.h3 when Black has to many pieces hanging. } 15. Nd5 { A powerful thrust made possible because the Black king hasn't found time to castle. } 15... Qa5 { 15...exd5 16.exd5+ Kf8 17.d6 Re8 18.Be7+ Kg8 19.Bxf7+ Kxf7 20.Ng5+ when Black finds himself in a mating net. } 16. Rf1 { Black's only threat is eliminated, and he is left with his king still in the center. } 16... Rc8 17. Nf4 Nge5 18. Nxe5 Nxe5 19. Rh3 { Played with the idea of discouraging Black from castling. } 19... Nc4 20. Rd1 Qb6 21. Nh5 Rg8 { 21...O-O would be refuted by 22.Nf6+ gxf6 23.Bxf6 Rfd8 24.Rxh7 Kxh7 25.Qh5+ Kg8 26.Qh8+ Mate. } 22. Rhd3 Nd6 23. e5 Ne4 24. Be3 { 24.Rd8+ Rxd8 25.Rxd8+ Qxd8 26.Bxd8 Kxd8 when Black's active pieces give him the initiative. } 24... Bxe3 25. Rxe3 Qc6 26. Qg4 Ke7 27. Rde1 f5 28. exf6+ gxf6 29. Qh3 { The White queen eyes Black's weak e6-pawn for the final assault on the uncastled king. } 29... f5 30. f3 Ng5 31. Qxf5 Rcf8 32. Rxe6+ Nxe6 33. Rxe6+ Kd8 34. Qd3+ { Black resigned as 34...Qd7 drops the queen to 35. Rd6. } 1-0
[Event "Stockholm Interzonal"]
[Site "?"]
[Date "1962.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Schweber"]
[Result "1-0"]
[PlyCount "85"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6 7. Be3 e5 8. d5 c6 9. h4 cxd5 10. cxd5 Nbd7 11. h5 g5 { Forced as Black would come under a direct kingside attack if he allowed the h-file to be opened. } 12. f3 a6 13. g4 { The White pawn chain from d5-h5 holds the Black army in a complete lock. Black has no space for his pieces and must sit and wait while his opponent finds a plan of attack. } 13... b5 14. a4 b4 { The Black pawn comes rushing forward. However, it's not backed up by a single Black piece. } 15. Nb1 a5 16. Nd2 Nc5 { 16...Ba6 17.Bxa6 Rxa6 18.Nc4 when White keeps all his advantages, more active pieces, better pawn structure and targets to attack a5. } 17. Bxc5 dxc5 { White has traded his good bishop for a different type of advantage: weak c- pawn. } 18. Bb5 Bb7 19. Ne2 Ne8 20. Bxe8 Rxe8 { White has the big advantage of having the two knights in a closed position. The bishops being better in open positions. } 21. Nc4 Ba6 22. Qb3 Qf6 23. Rc1 Bf8 24. Ng3 Bc8 { Played with the idea of trading the bishop for the knight in the event of Nf5. However, Black's pieces have been reduced to total passivity. } 25. O-O Rd8 26. Kg2 Ra7 27. Rf2 { The White rook is headed over to the c-file to put more pressure on the weak Black pawn. } 27... Kh7 28. Rfc2 Qa6 { A miscalculation which costs Black a pawn. However, this wouldn't have changed the result since it was only a question of time before White wins. } 29. Nxe5 Rc7 30. Nc4 Bg7 31. Qd3 Kg8 32. Rd2 Re7 33. e5 { White returns the e-pawn in order to promoter a series of exchanges which will reduce the game to an elementary ending. } 33... Bxe5 34. Nxe5 Rxe5 35. Qxa6 Bxa6 36. Rxc5 Bc8 37. Rxa5 f5 38. gxf5 Bxf5 39. Nxf5 Rxf5 40. Rb5 Rdf8 41. d6 Rxb5 { 41...Rxf3 42.d7 would cost Black a rook. } 42. axb5 Kf7 43. d7 { Black resigned. 43.d7 Rd8 44.b6 Ke7 45.b7 b3 46.Kg3 Kf7 47.b8Q Rxb8 48.d8Q wins easily. } 1-0
[Event "World Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Botvinnik"]
[Result "1-0"]
[PlyCount "103"]

1. c4 g6 2. Nf3 Bg7 3. Nc3 e5 4. g3 Ne7 5. Bg2 O-O 6. d4 exd4 { 6...exd4 gi ves up the central pressure. Better was to retain the tension with 6...d6. } 7. Nxd4 Nbc6 8. Nxc6 Nxc6 { 8...bxc6 would leave Black with doubled c-pawns and three pawn islands to White's two pawn islands. } 9. O-O d6 { 9...Bxc3 1 0.bxc3 It's true Black has doubled the White c-pawns but at the severe price of Black weakening the dark squares. } 10. Bd2 Bg4 { A subtle move. The idea is to force White to weaken his kingside with 11. h3. } 11. h3 Be6 12. b3 Qd7 { Due to Black's 10...Bg4 the queen now goes to d7 with a double attack on the White h-pawn. } 13. Kh2 Rae8 14. Rc1 f5 { Black overestimates his chances on the kingside. Better was 14...Ne7. 14...Ne7 Controlling the central square of d5 was to be preferred. } 15. Nd5 { White wastes no time in occupying the critical d5 square. } 15... Kh8 16. Be3 Bg8 17. Qd2 Nd8 18. Rfd1 Ne6 19. Nf4 { A strong move which stops the Black knight from reaching the e4 square via c5. } 19... Nxf4 20. Bxf4 Qc8 21. h4 Re7 22. Bf3 Bf7 23. Qa5 Be8 24. c5 { 24.Qxa7 is lso good as Bc6 25.Bxc6 bxc6 26.Bxd6 cxd6 27.Qxe7 would win the exchange. } 24... d5 { Black sets a positional trap. } 25. Bd6 { 25.Rxd5 White avoided 25. Rxd5 as after Bc6 26.Rd2 Bxf3 27.exf3 White's extra pawn would be a useless doubled one. } 25... Qd7 { 25...cxd6 26.cxd6 Qd7 27.dxe7 Qxe7 would not only leave White an exchange up, but allow the White rook to enter the seventh rank } 26. Bxe7 Qxe7 27. Rxd5 f4 28. Qd2 Bc6 29. Rd3 Bb5 30. Rd4 { White gives back the exchange which forces an ending where he will be a pawn up. } 30... fxg3+ 31. fxg3 Bxd4 32. Qxd4+ Qg7 33. Qxg7+ Kxg7 34. Rc2 Re8 35. Kg2 Kf6 36. Kf2 Bc6 { Black enters into the rook and pawn ending. } 37. Bxc6 bxc6 38. Rc4 Ke5 39. Ra4 { A good move which ties down the Black rook to the defence of the a-pawn. } 39... Ra8 40. Ra6 Kd5 41. b4 Kc4 42. a3 Kb5 43. Ra5+ Kc4 44. Ke3 a6 45. Kf4 { With both of Black's pieces busy on the queenside, the White kings goes over to the unprotected Black pawns on h7 and g6. } 45... Kd5 46. Kg5 Re8 47. Rxa6 Rxe2 48. Ra7 { Remember that rooks belong on the seventh rank where the enemy pawns can't protect themselves. } 48... Re5+ 49. Kf4 Re7 50. Rb7 Ke6 51. a4 Kd7 52. Rb8 { A little finesse which keeps the Black king from White's a pawn. Black resigned. } 1-0
[Event "World Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Botvinnik"]
[Black "Petrosian"]
[Result "0-1"]
[PlyCount "122"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. g4 Be6 8. h3 Nf6 9. Nf3 Nbd7 10. Bd3 Nb6 11. Qc2 Nc4 12. Kf1 { The White king will find safety on the g2 square. } 12... Nd6 13. Nd2 Qc8 14. Kg2 Nd7 15. f3 { 15.Bxh7 g6 16.Bxg6 fxg6 17.Bxd6 Bxd6 18.Qxg6+ Ke7 The piece would be more valuable than the three pawns. } 15... g6 16. Rac1 { 16.e4 gaining key central ground was better. } 16... Nb6 17. b3 Qd7 18. Ne2 Ndc8 { Black's idea is to oppose the powerful bishop on f4, with Bd6. While the knight heads towards e7. } 19. a4 a5 20. Bg3 Bd6 21. Nf4 Ne7 22. Nf1 h5 { Now that Black has the center under control, he gains ground on the flank. } 23. Be2 h4 24. Bh2 g5 25. Nd3 Qc7 26. Qd2 Nd7 27. Bg1 { White is wrong to run from the fight. As Black now has possession of the b8-h2 diagonal. } 27... Ng6 28. Bh2 Ne7 { This move can be explained by the match standing. Black was willing to take a draw by repeating the position over and over. } 29. Bd1 b6 30. Kg1 f6 31. e4 Bxh2+ 32. Qxh2 Qxh2+ 33. Rxh2 Rd8 34. Kf2 Kf7 35. Ke3 Rhe8 36. Rd2 Kg7 37. Kf2 dxe4 38. fxe4 Nf8 39. Ne1 Nfg6 40. Ng2 Rd7 { A dynamic pos ition. The question is whether White's center pawns are strong or targets for the Black pieces to attack. } 41. Bc2 Bf7 42. Nfe3 c5 43. d5 Ne5 44. Rf1 { 44.Nc4 challenging the Black knight on e5 was a better choice. } 44... Bg6 45. Ke1 { 45.Nc4 } 45... Nc8 46. Rdf2 Rf7 47. Kd2 Nd6 { The Black knights have set up a powerful blockade and soon advance with decisive effect. } 48. Nf5+ Bxf5 49. exf5 c4 { The White pieces, consisting of a bad bishop, two inactive rooks and a knight that is out of play, can only watch as the queenside is torn apart. } 50. Rb1 b5 51. b4 c3+ { Black clears the c-file for the decisive attack. } 52. Kxc3 Rc7+ 53. Kd2 Nec4+ 54. Kd1 Na3 55. Rb2 Ndc4 56. Ra2 axb4 57. axb5 Nxb5 { The Black knights rule the board. } 58. Ra6 Nc3+ 59. Kc1 Nxd5 60. Ba4 Rec8 61. Ne1 Nf4 { Faced with multiple threats White resigned. } 0-1
[Event "World Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Botvinnik"]
[Result "1-0"]
[PlyCount "95"]

1. c4 g6 2. d4 Nf6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. Be2 dxc4 7. Bxc4 c5 8. d5 e6 9. dxe6 Qxd1+ 10. Kxd1 Bxe6 11. Bxe6 fxe6 12. Ke2 { A dynamic position has arisen. True Black has an isolated e-pawn. However, this is compensated for by his queenside pawn majority and slightly more active pieces. } 12... Nc6 13. Rd1 Rad8 { 13...Kf7 Giving the e-pawn protection is preferable. } 14. Rxd8 Rxd8 15. Ng5 { A well disguised idea. The knight is actually heading to e4 but is currently attacking the e-pawn. } 15... Re8 16. Nge4 Nxe4 17. Nxe4 b6 18. Rb1 { Freeing the bishop from the defense of the b-pawn. } 18... Nb4 19. Bd2 { The a-pawn is poisoned. } 19... Nd5 { 19...Nxa2 20.Ra1 Nb4 21.Bxb4 cxb4 22.Rxa7 Bxb2 23.Rb7 Regains the pawn while leaving Black with all the weaknesses. } 20. a4 { White restrains the enemy pawn majority. } 20... Rc8 21. b3 Bf8 { The Black bishop heads to e7 to keep the reins on the White knight. } 22. Rc1 Be7 { 22...Rc7 would have protected the Black rook and thus of broken the pin. } 23. b4 c4 { 23...Kf7 24.bxc5 bxc5 would leave Black with an isolated pawn at c5. } 24. b5 Kf7 25. Bc3 { Remember these three steps to winning an isolated pawn, blockade, attack, destroy. } 25... Ba3 26. Rc2 Nxc3+ 27. Rxc3 Bb4 28. Rc2 Ke7 29. Nd2 c3 30. Ne4 Ba5 31. Kd3 Rd8+ 32. Kc4 Rd1 33. Nxc3 { White has followed through on his plan, blockade, attack, destroy. } 33... Rh1 34. Ne4 { A deep move to understand with variations. The idea is that the h2 pawn is insignificant compared with the dominant posts White gains for his pieces. } 34... Rxh2 35. Kd4 Kd7 { Played to stop the White rook from penetrating to the 7th. 35...Rxg2 36.Rc7+ Ke8 37.Ke5 leaves the Black king in a mating net. } 36. g3 Bb4 37. Ke5 Rh5+ 38. Kf6 Be7+ 39. Kg7 e5 40. Rc6 Rh1 { White has an overwhelming advantage because of his swarming pieces. } 41. Kf7 Ra1 42. Re6 Bd8 43. Rd6+ Kc8 44. Ke8 Bc7 45. Rc6 Rd1 46. Ng5 Rd8+ 47. Kf7 Rd7+ 48. Kg8 { Black resigned because he will be unable to save his kingside pawns. } 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Burger"]
[Result "0-1"]
[PlyCount "28"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nd4 { Black tries to get compensation for his pawn by attack White's advanced pieces with gain of time. } 6. c3 b5 7. Bf1 Nxd5 8. cxd4 Qxg5 9. Bxb5+ Kd8 { Black's king is shielded by White's two d-pawns, but White's king will come under fire on either the e-file or the kingside. } 10. Qf3 Bb7 11. O-O e4 { Black gives up another pawn to keep White's queen on the a8-h1 diagonal where it will be a target for discovered attacks from Black's bishop. } 12. Qxe4 { 12.Qxf7 Be7 And White can't meet Black's attack kingside attack. } 12... Bd6 { Black now has four pieces aimed at White's king, more than enough compensation for White's two sickly d-pawns. } 13. d3 { Overlooking Black's threat. } 13... Bxh2+ 14. Kxh2 Nf4 { White resigned, because he can't meet both the threat on his queen and mate threats by ...Qxg2 or ...Qh4+ and Ne2. } 0-1
[Event "US Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Benko"]
[Result "1-0"]
[PlyCount "43"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 O-O 6. Bd3 Bg4 7. h3 Bxf3 8. Qxf3 Nc6 9. Be3 e5 10. dxe5 dxe5 11. f5 gxf5 12. Qxf5 Nd4 13. Qf2 Ne8 14. O-O Nd6 15. Qg3 Kh8 16. Qg4 c6 17. Qh5 Qe8 { White has the f-file, well-placed pieces and a slightly better pawn structure. Black's forces are scattered, and the bishop does little from its post at g7. Fischer exploits these factors quickly. } 18. Bxd4 { The knight at d4 was a potential defender on the kingside, and the bishop was not going to participate in the attack anyway. } 18... exd4 { 18...exd4 19.e5 looks like it wins a piece, because of the threat of Qxh7 mate, but Black has a defense.  f5!  Qxe8 Nxe8 } 19. Rf6 { A brilliant move. The idea is to encourage Black to move the bishop to a position where it blocks the f-pawn from advancing, eliminating the defense mentioned in the previous note. 19.Rf6 Bxf6 20.e5 h6 21.Qxh6+ Kg8 22.Qh7+ } 19... Kg8 20. e5 h6 21. Ne2 { Here Black resigned, because mate is still unavoidable, for example } 21... Nc8 22. Qf5 1-0
[Event "World Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Botvinnik"]
[Result "1-0"]
[PlyCount "131"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. d4 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6 11. Bb2 d6 12. Rad1 Nd7 13. Ne1 Bxg2 14. Nxg2 Bg5 { 14...Qe7 Finishing Black's development is also possible. } 15. Qc2 Bh6 16. e4 f4 17. Ne1 Qe7 { This move does nothing to stop White's play in the center. Better was 17...Qg5. 17...Qg5 18.e5 dxe5 19.dxe5 Nxe5 } 18. e5 dxe5 19. dxe5 Rad8 20. Qe2 Qg5 21. Kg2 a5 22. Nf3 Qh5 23. Ba3 Rfe8 { 23...Rf7 Followed up by pawn g5 would retain Black's attacking chances. } 24. Rd4 { With Black's kingside attack having been repulsed, White directs his attention to the center. } 24... Nb8 25. Rfd1 Rxd4 26. Rxd4 fxg3 27. hxg3 { White stands better due to his more active pieces and better pawn structure. } 27... Qf7 28. Qe4 g6 29. Qb7 Bg7 30. c5 { This thrust creates further holes in Black's pawn structure. } 30... bxc5 31. Bxc5 Nd7 32. Qxc7 Nxe5 33. Qxf7+ Nxf7 34. Ra4 Bc3 35. Rc4 { 35.Bd4 Also puts great pressure on Black's position. } 35... Bf6 36. Bb6 Ra8 37. Ra4 Bc3 38. Bd4 Bb4 39. a3 Bd6 { 39...Be7 40.b4 Bd8 41.Bc3 Rc8 would put up more resistance. } 40. b4 Bc7 41. Bc3 Kf8 42. b5 { White creates a very strong passed pawn. 42.bxa5 was also good. } 42... Ke8 43. Rc4 Kd7 44. a4 Rc8 45. Nd2 Nd6 46. Rd4 Ke7 47. Rd3 Nb7 48. Ne4 { Black can offer little resistance to White's protected passed pawn and more active pieces. } 48... e5 49. Bb2 Bb6 50. Ba3+ Ke6 51. Ng5+ Kf5 52. Nxh7 e4 53. g4+ { 53.Rd7 would have been more active. } 53... Kf4 54. Rd7 Rc7 55. Rxc7 Bxc7 56. Nf6 Bd8 57. Nd7 Kxg4 58. b6 Bg5 59. Nc5 Nxc5 60. Bxc5 Bf4 61. b7 Bb8 62. Be3 g5 { 62...Kf5 63.Kh3 g5 64.Bd2 Ke6 65.Kg4 Kd7 66.Bxg5 Kc7 67.Bf4+ Kxb7 68.Bxb8 Kxb8 69.Kf5 with a won king and pawn ending for White. } 63. Bd2 Kf5 64. Kh3 Bd6 65. Bxa5 g4+ 66. Kg2 { Black resigned in view of White's queenside pawns. } 1-0
[Event "Poughkeepsie"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Fine"]
[Result "1-0"]
[PlyCount "33"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O dxc3 8. Qb3 Qe7 { 8...Qf6 is normal. Black's move uses the threat of a later ... Qb4 to get play, but Black's pieces just get in each others' way. } 9. Nxc3 Nf6 10. Nd5 { White forces Black to open the e file onto his own king, accentuating his lead in development. } 10... Nxd5 11. exd5 Ne5 12. Nxe5 Qxe5 13. Bb2 { White's lead in development is decisive, but the tactics Fischer uses to prove this are most instructive. } 13... Qg5 14. h4 { Deflecting the queen from g7. If Black doesn't White wins by doubling on the e file and mating on e7 or e8. } 14... Qxh4 15. Bxg7 Rg8 16. Rfe1+ Kd8 17. Qg3 { The second deflection of the queen, and this time there is no answer-- Black can't hold both his queen and the d8-h4 diagonal. } 1-0
[Event "World Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Botvinnik"]
[Result "1-0"]
[PlyCount "72"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Bg7 6. e4 O-O 7. Be2 Nc6 8. Nf3 Nd7 9. Be3 Nb6 10. Qc5 { 10.Qd3 f5 With chances for both sides. } 10... Bg4 11. d5 Nd7 12. Qa3 Bxf3 13. Bxf3 Nd4 14. O-O-O Nxf3 15. gxf3 Nb6 { 15...c6 Trying to open up lines to the White king is also possible. } 16. Qb3 Qd7 17. h4 { White starts his kingside attack. } 17... h5 18. f4 e6 19. dxe6 Qxe6 20. Qxe6 fxe6 21. Rhg1 Kh7 22. Nb5 { White stands better in the endgame because of his more active pieces. } 22... Rf7 23. Nd4 Re8 { 23...Bxd4 24.Rxd4 Re8 } 24. Nf3 Bh6 25. Ng5+ Bxg5 26. Rxg5 Nc4 { 26...Nc8 would be more defensive. } 27. Rdg1 { 27.f5 would unleash the energy out of the White pieces after exf5 28.exf5 Rxf5 29.Rd7+ Kh8 30.Bd4+ Ne5 31.f4 winning the knight. } 27... Rg8 28. Kc2 { With no danger of being mated the White king moves to a more active position. } 28... b6 { Black is wrong to place his queenside pawns on Black squares which the enemy bishop can attack. 28...Nd6 Bringing the knight back to defend the kingside. } 29. f3 a6 { With the idea of playing Rd7, Nf7 defending the kingside. While the queenside pawns would be safer on the light squares. } 30. b3 Nd6 { f3  Rd7 } 31. R5g2 { Rdd8  a4  Nf7  Bc1 } 31... e5 { Be3  exf4  Bxf4  Rd7 } 32. Rd2 { Rxd2+  Kxd2 } 32... Rd8 { Ke2  c5  a5  White has a big advantage due to his queenside initiative and passed e-pawn.  Rd7  39... bxa5 40.Ra1 Rd7 41.Rxa5 Rb7 42.Rxc5 Rxb3 43.Rc7 winning material on the seventh rank .  axb6  axb6 } 33. Ra1 Kg7 { Ra6  Rb7  Ra8  Kf6  43...b5 44. Rc8 c4 45.b4 would leave Black helpless.  Rc8  Ne5  Ke3  Nd7  Rc6+  Kf7 } 34. fxe5 { White's passed pawn marches ahead.  Nf8 } 34... Rf6 { Kg7  Ke4  b5  Rc6  Kf7  Rxc5  With the winning of this pawn the rest is a matter of technique.  Ne6 } 35. Rd5 { Ke7  Be3 } 35... Rb8 36. Rxd6 { b4  Ra6  Rb5  Ra7+  Ke8  f4 } 36... Kf8 { f5  Black resigned because he is a pawn down with more losses on the way. } 1-0
[Event "US Championship"]
[Site "?"]
[Date "1963.??.??"]
[Round "?"]
[White "Byrne,R"]
[Black "Fischer"]
[Result "0-1"]
[PlyCount "42"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nc3 Bg7 7. e3 O-O 8. Nge2 Nc6 9. O-O b6 10. b3 Ba6 11. Ba3 Re8 12. Qd2 e5 { Opening the center. Black's piece activity offsets the resulting isolani. } 13. dxe5 Nxe5 14. Rfd1 { The wrong Rook! } 14... Nd3 15. Qc2 Nxf2 16. Kxf2 Ng4+ 17. Kg1 Nxe3 18. Qd2 Nxg2 { A brilliant attack now ensues. } 19. Kxg2 d4 20. Nxd4 Bb7+ 21. Kf1 { There is a great story that accompanies this game. In a hall adjacent to the playing room, Grandmaster Rossolimo was commenting on the games for a large audience. He had been completely mystified by this game; at this point, in fact, he told his audience that there was obviously nothing left for Fischer to do but give up. Suddenly, the messenger came with the next report, and announced that Byrne had resigned! Can you guess Fischer's deadly final stroke? } 21... Qd7 0-1
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Sugerman"]
[Result "1-0"]
[PlyCount "23"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O d6 8. Qb3 { In this standard line of the Evans Gambit White plays for pressure against f7 to compensate for his pawn. } 8... Bb6 { This loses--Black gives back the pawn for no reason and lets his king get pushed around. } 9. Bxf7+ Kf8 10. Bxg8 Rxg8 11. Ng5 { This double attack against f7 and h7 wins material. } 11... Ne5 { 11...Qe8 12.Nxh7+ Ke7 13.Bg5+ Kd7 } 12. Nxh7+ { Black loses a rook after 12... Ke8 13.Qxg8+ or his queen after 12...Ke7 13.Bg5+ } 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Boatner"]
[Result "1-0"]
[PlyCount "19"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 { Black doesn't want to gain a tempo after 6.d4 as he would after 5...Bc5. } 6. d4 d6 { This is a mistake. Black should play 6...Na5 to neutralize White's bishop. } 7. Qb3 { White should play 7.dxe5. The text lets Black defend by 7...Na5, since 8. Bxf7+ is no good. } 7... Nh6 8. Bxh6 { Now 8...Na5 doesn't work as Black will come out a piece down. } 8... gxh6 9. Bxf7+ Kf8 10. Bh5 { Black can only stop the mate on f7 by 10...d5, when he will end up two pawns down with his king still exposed. } 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Gloger"]
[Result "1-0"]
[PlyCount "33"]

1. b4 { White grabs space on the queenside and prepares to fianchetto his bishop. } 1... e5 2. Bb2 f6 { Black blocks the bishop's diagonal but weakens his kingside. } 3. e4 { With Black having weakened his kingside White shifts into gambit mode and plays for attack. } 3... Bxb4 4. Bc4 { Now Black will be unable to castle. } 4... Ne7 5. Qh5+ Ng6 { 5...g6 6.Qh4 leaves Black's knight awkwardly placed, but now the pin on the knight will become unpleasant. } 6. f4 { White offers another pawn to open his queen bishop's diagonal. } 6... exf4 7. Nf3 { Threatening to attack the pinned knight by 8.Nh4. } 7... Nc6 8. Nc3 { Now White threatens 9.Nh4 Ne7 10.Nd5. } 8... Bxc3 9. Bxc3 d6 10. Nh4 Ne7 11. Nf5 Kf8 12. O-O { White threatens 13.Rxf4 followed by 14.Nxg7 and 15.Rxf6 or 15.Bxf6. } 12... Qe8 { This loses by cutting off a possible escape square for Black's king. } 13. Bxf6 { Black can't take the bishop because of 14.Qh6 mate. } 13... Bxf5 14. exf5 d5 15. fxg6 gxf6 16. Qh6+ Kg8 17. g7 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Jones"]
[Result "1-0"]
[PlyCount "15"]

1. e4 e5 2. f4 f6 { After this Black is almost lost. } 3. fxe5 Nc6 { 3...fxe5 4.Qh5+ gives Black the unhappy choice of losing a rook after 4...g6 5. Qxe5+ or his king after 4...Ke7 5.Qxe5+ Kf7 6.Bc4+. } 4. d4 Be7 5. exf6 gxf6 { If 5...Nxf6 White plays 6.Bd3 threatening 7.e5 and 8.Qh5+. } 6. Qh5+ Kf8 7. Bc4 Qe8 8. Bh6+ 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Kral"]
[Result "1-0"]
[PlyCount "31"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 Be7 8. Qe2 O-O 9. Bg5 c5 10. dxc5 Qa5+ 11. c3 Qxc5 12. O-O-O { Here Black makes a big mistake. } 12... b5 { Now there is a path to the rook at a8 on one diagonal, and a path to h7 on another diagonal. The diagonals intersect at e4. If the White queen occupies that square, we would have a double attack. } 13. Bxf6 Bxf6 { White to move and win. } 14. Qe4 g6 15. Qxa8 b4 16. c4 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Chalker"]
[Result "1-0"]
[PlyCount "21"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 { White tries to prove Black's knight is misplaced. 5...f5 or 5...would lose a pawn for shaky compensation. } 5... Bb4+ { If White interposes on d2 Black will take over the initiative; if he moves his king Black will have two exposed minor pieces. } 6. Kd1 { Now that W hite's king is stuck in the center Black show sacrifice a pawn by 6...d5 7. exd6 f5, with complications. } 6... Nc5 { By cutting his bishop off from the kingside Black lets his queen get trapped. } 7. Bg5 d3 { Black's best try, keeping White's queen out of c4, but not good enough. } 8. cxd3 f6 9. exf6+ Kf7 10. Ne5+ Ke6 11. Nc6+ 1-0
[Event "Houston (simul)"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Chaney"]
[Result "1-0"]
[PlyCount "17"]

1. e4 e5 2. Nf3 d6 3. d4 f5 { Black opens up his kingside while he's behind in development, a formula for an early demise. } 4. dxe5 fxe4 5. Ng5 { Threatening Black's e-pawn and preventing 5...dxe5. } 5... d5 6. Nc3 { This develops a piece with gain of tempo. } 6... Ne7 { Blocking in his whole kingside. } 7. e6 { This wins at least the exchange, since Black can't do anything to keep the knight out of f7. } 7... Ng6 8. Nf7 Qf6 9. Nxh8 { Black has no appetite for 9...Nxh8 10.Nxd5, when he must lose at least another exchange. Play this out against Gambit if you don't see why. } 1-0
[Event "Moscow"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Spassky"]
[Black "Korchnoi"]
[Result "1-0"]
[PlyCount "47"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 { This is th e normal starting position of the Classical lines of the Queen's Indian Defense. Usually Black plays 7...Ne4 here, after which the knight can be supported by an advance of the f-pawn. } 7... d5 { This move has always had a bad reputation because the pawn at d5 becomes a target and White can unleash the power of the bishop at g2 by playing Ne5. } 8. cxd5 exd5 9. Ne5 { White's forces are better placed. } 9... Qc8 { The idea is to defend the bishop at b7. } 10. Bg5 Qe6 { Now the queen guards the minor pieces on the kingside. But Her Majesty is ill-suited to the role of a chaperone! } 11. Rc1 c5 { Black takes advantage of the fact that the pawn on d4 must remain in place to guard the knight at e5. But White has a very powerful reply. } 12. Nd3 { The knight threatens a fork at f4, attacking pieces at d5 and e6. Right now it doesn't seem so dangerous, but Spassky will quickly eliminate the support of that square. } 12... cxd4 13. Bxf6 Bxf6 { Now White has a combination which wins the game. } 14. Nxd5 { The threats are Nc7 and Nxf6+, so Black must capture. } 14... Bxd5 15. Nf4 { This fork is the heart of the combination. } 15... Qd6 16. Nxd5 { There are still tremendous threats at c7 and f6! } 16... Bg5 { 16...Bd8 17.Nf4 Nc6 18.Rxc6 } 17. f4 Bd8 18. Nc3 { This is made possible by the fact that the pawn at d4 is pinned. } 18... Na6 { 18...Qc5 19.Na4 } 19. Bxa8 { The rest is easy. } 19... Qb8 20. Nd5 Qxa8 21. Qxd4 Nc5 22. b4 Ne6 23. Qd3 Re8 24. e4 1-0
[Event "Simultaneous Exhibition"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Nyman"]
[Result "1-0"]
[PlyCount "31"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Nf6 5. Nc3 Bb4 6. Nf3 O-O 7. O-O Bxc3 8. dxc3 c6 9. Bc4 Qb6+ { Black should trade queens and live with a slight disadvantage after White takes on f4. } 10. Kh1 Nxe4 11. Qe1 Re8 12. Bxf4 Nd6 13. Bxd6 Rxe1 14. Raxe1 { For his queen White has a huge lead in development and threats against f7. Now 14...Be6 would lose to 15 Ng5. } 14... Bd7 15. Ng5 Na6 16. Rxf7 { After 16...Kh8, the only defense to the threatened discovered check, White takes the bishop and will mate by Nf7+. } 1-0
[Event "Tel Aviv Olympiad"]
[Site "?"]
[Date "1964.??.??"]
[Round "?"]
[White "Smyslov"]
[Black "Ader"]
[Result "1-0"]
[PlyCount "55"]

1. Nf3 Nf6 2. g3 g6 3. b4 { This idea dates back to Reti himself, who used against no less a player than Capablanca! White will combine pressure along the a1-h8 diagonal with a rapid queenside advance, but Black can obtain play against the b- pawn. } 3... Bg7 4. Bb2 O-O 5. Bg2 c6 6. c4 d5 { The main alt ernative to this is to adopt a King's Indian formation based on d7-d6 and e7-e5. } 7. Na3 { The best square for the knight. On a3 it reinforces the queenside and does not obstruct the path of the Bb2. } 7... a5 8. b5 dxc4 { This creates targets on the queenside. 8...Bg4! is stronger. } 9. bxc6 Nxc6 10. Nxc4 Be6 { Black is weak on the b-file and b6 may become an outpost for White's pieces; White has a latent central pawn majority; his Bb2 is extremely powerful, yet if Black exchanges it for the Bg7 then the king will be in danger. } 11. Nce5 Nxe5 12. Bxe5 Qd7 13. O-O Rfc8 14. Qb1 Bd5 15. d3 Qa4 { Pointless. Black should employ his one remaining asset and play 15...b5. } 16. e4 Bc6 17. Re1 Nd7 18. Bxg7 Kxg7 19. Qb2+ Kg8 20. Rab1 Rc7 21. d4 Nf8 22. d5 { White's restrained pawns now conquer the centre and Black is crushed by a three-pronged attack. } 22... Be8 23. e5 Rac8 24. d6 Rd7 25. Ng5 Rc2 26. Qb6 f6 27. Bd5+ Kg7 28. dxe7 1-0
[Event "Havana"]
[Site "?"]
[Date "1965.??.??"]
[Round "?"]
[White "Pietzsch"]
[Black "Fischer"]
[Result "0-1"]
[PlyCount "48"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 Nbd7 7. Nc3 e5 8. dxe5 dxe5 9. Qc2 c6 10. Rd1 Qe7 11. Ng5 { This just loses time. The night can't stay on e4, so it should stick to f3. } 11... Ne8 { Now if either knight moves to e4, then ...f5 is strong, so Pietzsch tries something else, but he soon finds the position opening up to his disadvantage. } 12. e4 Nc7 { Eyeing the new weakness on d4. } 13. Be3 { The bishop is now a target for f7-f5-f4. } 13... h6 14. Nf3 Ne6 15. Rab1 { Hoping to get something on the queenside, but this is too slow. Black gets the initiative right away on the kingside, since he can gain time attacking White's pieces. } 15... f5 16. Nh4 { Since White can't follow up with f4 due to the weakness of the f file, this just misplaces another piece. Pietzsch hopes to get light square play, but just misplaces another piece. } 16... Qf7 17. exf5 gxf5 18. Bh3 { Another potential target. Fischer now hits all White's pieces with tempo, and it's no surprise that in the end something must drop. } 18... f4 { This does weaken the light squares, but such considerations are of lesser importance than king safety, which White lacks. } 19. Qg6 { White must have thought this move got him out of trouble, but punishment is swift. } 19... Ng5 { The winning move. White has too many pieces hanging. } 20. Bxd7 Bxd7 21. Qxf7+ Rxf7 22. gxf4 { Otherwise Black will trade on g3 and penetrate to f2. } 22... exf4 23. Bd4 Bg4 24. Rd2 Rd7 0-1
[Event "Moscow"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Botvinnik"]
[Black "Keres"]
[Result "1-0"]
[PlyCount "59"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. g3 Bc5 5. Nxe5 Bxf2+ 6. Kxf2 Nxe5 7. e4 c5 8. d3 d6 9. h3 h5 10. Be2 Nh7 11. Kg2 h4 12. g4 Ng5 13. Be3 Bd7 14. Qd2 Ne6 15. b4 b6 16. Rab1 Bc6 17. Rhf1 Bb7 18. Kg1 Nc6 19. Nd5 Ncd4 20. Bd1 f6 21. Kh2 Bc6 22. a4 a5 23. bxa5 bxa5 24. Qf2 Ra7 { To get into the Black fortress, White must do something about the barrier at f6 and g7. } 25. g5 O-O { Black seems to have castled to safety, but in fact White will now slam the door shut and trap the enemy king. } 26. g6 f5 { This defends the pawn at h4 by opening up a diagonal for the Black queen. Botvinnik realizes that if he can win the pawn and bring the queen to the h-file, then that will wrap things up. But how to deflect the queen? } 27. Rb8 { Black resigned, because the queen must leave the diagonal, since the knight at d5 controls e7 and f6, and the bishop at e3 controls g5. And when the queen moves, Black's defense collapses. } 27... Qxb8 28. Qxh4 Rc8 29. Qh7+ Kf8 30. Qh8# 1-0
[Event "Kislovodsk"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Tal"]
[Black "Hamann"]
[Result "1-0"]
[PlyCount "33"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. O-O Bb4 { A risky line. The dark-squared bishop usually belongs at e7 in the Sicilian Defense so that it can help with the defense. } 8. Bg5 Bxc3 9. Bxf6 { An intermed iate move which disrupts Black's kingside structure, already weakened by the absence of the bishop. } 9... gxf6 10. bxc3 Qxc3 11. Rb1 Nc6 12. Nxc6 dxc6 13. Rb3 Qc5 14. Qd2 { White threatens to play Rd1. Black is so worried about an infiltration at h6 that he misses the main point. } 14... h5 15. Rd1 Ke7 16. Rd3 Qb6 { The domination of the open file by White is enough to guarantee a quick kill. } 17. e5 { Black resigned. If you are not sure why, then play out the position as Black against Gambit and see what happens. } 1-0
[Event "Amsterdam"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Botvinnik"]
[Black "Robatsch"]
[Result "1-0"]
[PlyCount "55"]

1. c4 Nf6 2. Nc3 e6 3. d4 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Qc2 O-O { 7...Ne4 8.Bxe7 Qxe7 9.Nxd5 } 8. Bd3 Nbd7 9. Nf3 Re8 10. O-O Nf8 { A typical maneuver in the Exchange Variation of the Queen's Gambit. } 11. Rae1 Ne4 12. Bxe7 Qxe7 13. Bxe4 dxe4 14. Nd2 { Black is now faced with a difficult, but hardly new, choice. 14...f5 was known to be bad, but after an hour's thought he chose a move which was no better. } 14... b6 { The threat is Ba6. } 15. Qa4 f5 16. f3 exf3 17. Nxf3 Bb7 18. Ne5 { This knight is more powerful than both of Black's minor pieces! White's future plans involve getting the pawn at f5 out of the way so that the rook can infiltrate on the seventh rank. } 18... Qe6 19. Qc2 Bc8 20. e4 Qd6 21. Rd1 Ne6 22. Qb3 { Now there is the serious threat of 23.exf5, so Black must open up the line. } 22... fxe4 23. Rf7 a5 { This is a very complicated position, as can bee seen in the variations 23...Ng5 24.Nxe4 Nxe4 25.Rf8+ Kxf8 26.Qf7++, 23...Nxd4 24.Rf8+ Kxf8 25.Qf7++ , 23...Rf8 24.Rxf8+ Kxf8 25.Nxe4 Qd5 26.Qf3+ and finally 23...e3 24.Ne4 Qd5 25.Qxe3 Nxd4 26.Nf6+ gxf6 27.Qg3+ Bg4 28.Qxg4+ Kh8 29.Qg7+ } 24. Nxe4 { Here Black resigned. Do you see what happens on 24...Qd5? If not, challenge Gambit with the game because it is very entertaining! } 24... Qd5 25. Rxg7+ Kxg7 { 25...Nxg7 26.Nf6+ Kh8 27.Qxd5 cxd5 28.Nf7++ } 26. Qg3+ Kf8 27. Rf1+ Ke7 28. Qh4+ 1-0
[Event "Havana Olympiad"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Fischer"]
[Black "Gligoric"]
[Result "1-0"]
[PlyCount "49"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O { White gains a tempo by threatening to win Black's e-pawn. } 5... f6 6. d4 Bg4 7. c3 { White offers a pawn to maintain his initiative after: } 7... exd4 { Black falls in with White's plans. He should play to hold e5 by 7...Bd6. } 8. cxd4 { The establishment of the pawn center (e4, e4) is the primary goal of many opening strategies. It limits the mobility of the enemy forces, and either pawn can advance with good effect. } 8... Qd7 { Black hopes to pressure White's d-pawn, but he has missed a tactic which will keep a strong initiative for White. } 9. h3 Be6 { It is no better to win White's d-pawn now than before. 9...Bh5 10.Ne5 Bxd1 11.Nxd7 Kxd7 12.Rxd1 leads to a good endgame for White. } 10. Nc3 { But now White's strong center will give him an attack whichever way Black castles. } 10... O-O-O 11. Bf4 { Now White will get an attack against Black's king, but waiting in the center wouldn't have worked because White could open things up by 11.d5. } 11... Ne7 { The losing move, as now he doesn't have time to keep White's knight out of his king position. 11... Bd6, trying to blunt White's bishop, was the best chance. } 12. Rc1 Ng6 13. Bg3 Bd6 14. Na4 Bxg3 { Now Black will have no way to dislodge White's knight from c5, making the attack a straightforward rout. He should have tried 14... Kb8. 14...Rhe8 15.d5 cxd5 16.Nb6+ } 15. fxg3 Kb8 16. Nc5 Qd6 17. Qa4 Ka7 { Completely missing White's next move. He could have tried to hang on by 17... Bc8 18.Rc3 Nf8 although White's attack should win in the end. } 18. Nxa6 Bxh3 { Desperation. Try to find a clear win for White in all lines after 18... bxa6 19.Rxc6. } 19. e5 { Cutting Black's queen off from g3, which was Black's final, desparate hope. } 19... Nxe5 20. dxe5 fxe5 21. Nc5+ Kb8 22. gxh3 e4 23. Nxe4 Qe7 24. Rc3 b5 25. Qc2 1-0
[Event "Havana Olympiad"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Soruco Garcia"]
[Black "Fischer"]
[Result "0-1"]
[PlyCount "42"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. a3 { The beginning of some very passive play by White. } 8... Be7 9. Be3 O-O 10. O-O Bb7 11. f3 { White worries about the weakness of his e-pawn, but Black takes over the initiative after this. } 11... Nbd7 12. Qd2 Ne5 13. Qf2 Qc7 14. Rac1 Kh8 { With White unable to do anything anywhere on the board Black prepares to take the initiative on the kingside as well. } 15. Nce2 Rg8 16. Kh1 { Getting off of the g-file in case Black forces it open, but moving onto the diagonal of Black's queen bishop. } 16... g5 17. h3 { White doesn't want to allow ...g4 when his e-pawn will become hopelessly weak and Black will have an attack on his king as well, but now the dark squares around White's king are weak. } 17... Rg6 18. Ng3 Rag8 19. Nxe6 { White sees ...h5, ...Rh6 and ...g4 coming and panics, but it is hard to see what he could have done. to stop Black's attack. } 19... fxe6 20. Bxe6 Nxe4 { This discovered attack on White's bishop ends White's hope of counterattack. } 21. Nxe4 Rxe6 { White has nothing for his piece and Black is ready to resume his attack. } 0-1
[Event "Soviet Union"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Zaitsev"]
[Result "1-0"]
[PlyCount "45"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Nf3 e5 7. d5 Nh5 8. g3 { Played with the idea of stopping Black's intended 8...Nf4 } 8... f5 9. exf5 Qf6 { 9...gxf5 9...gxf5 would drop a pawn after 10.Nxe5 dxe5 11.Bxh5 } 10. Ng5 { A very strong move whose purpose is two-fold. First, White is threatening to win a pawn with 11. Bxh5 gxh5 12. Qxh5. Secondly, The knight is looking to penetrate the Black camp at e6. } 10... Qxf5 11. O-O Nf6 12. Bd3 Qg4 13. Be2 Qf5 14. f3 Bh6 15. Bd3 Qd7 16. Ne6 { White has a big advantage due to his powerful knight on e6 and Black's undeveloped queenside. } 16... Bxc1 17. Qxc1 { 17.Nxf8 Be3+ 18.Kh1 Kxf8 when Black stands better due to his materialadvantage  of two pieces for the rook. } 17... Rf7 18. f4 { With Black's queenside out of the game White wastes no time on his kingside attack. The remainder of the game is pretty much forced. } 18... exf4 19. Qxf4 Nxd5 { Perhaps Black hoped that White would not notice either of the attacks on his queen. } 20. Qxf7+ Qxf7 21. Rxf7 Bxe6 22. Nxd5 Bxd5 23. Rxc7 { Black resigned due to his material deficit. } 1-0
[Event "Havana Olympiad"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Petrosian"]
[Black "Johansson"]
[Result "1-0"]
[PlyCount "49"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. f4 Nc6 8. Be3 Qc7 9. O-O Bd7 10. Nb3 b5 { A typical position in the Sicilian Defense. Black attacks on the queenside and White operates on the kingside and in the center. } 11. a3 Be7 12. Rf2 b4 13. axb4 { 13.Na4 Nxe4 14.Nb6 Rb8 15.Rf3 Rxb6 16.Bxb6 Qxb6+ 17.Kh1 Nf2+ 18.Rxf2 Qxf2 } 13... Nxb4 14. Bf3 Rc8 { Black continues to ignore the safety of the king. } 15. g4 h6 { This pawn thrust just gives White a target to attack. Better was O-O. } 16. g5 hxg5 17. fxg5 Nh7 18. Qd2 Nf8 { Black's pieces lack coordination due to his king being stuck in the center. } 19. Qd4 { The double attack on Black's knight and g-pawn nets White material. } 19... Nc6 20. Qxg7 Rh7 21. Qg8 Ne5 22. Be2 Bc6 23. Rxa6 { White has the initiative on the whole board. } 23... Rd8 { Now White wins with a nice combination. } 24. Rxc6 { This exchange sacrifice ends the game quickly. } 24... Nxc6 25. Bb5 { Black resig ned as he has no good response to White's many threats. If you don't see the threats try defending against Gambit. } 1-0
[Event "Amsterdam"]
[Site "?"]
[Date "1966.??.??"]
[Round "?"]
[White "Szabo"]
[Black "Botvinnik"]
[Result "0-1"]
[PlyCount "62"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Nc2 d6 7. e4 Nh6 8. h4 { when Black places a knight at f6 and has fianchettoed the bishop at g7, then this is usually the appropriate strategy. } 8... f5 9. h5 fxe4 10. hxg6 { But this is overambitious. White should simply have recaptured at e4. } 10... hxg6 11. Nxe4 Bf5 { Black is way ahead in development and continues to bring his forces into the game quickly. } 12. Nc3 Qa5 13. Bd2 Qe5+ 14. Ne3 O-O-O 15. Qa4 { Black has completed development, and White has not, so it is time for the action to begin. } 15... Ng4 16. Rxh8 Rxh8 17. Qb5 { White wants to reduce the pressure by exchanging queens but Botvinnik will not cooperate. } 17... Qf4 18. Ncd1 Nd4 19. Qa5 Rh1 20. Rc1 Ne5 { The threat is Nd3++. } 21. Qc7+ Kxc7 22. Nd5+ Kd7 23. Nxf4 g5 { The queens may be gone, but the attack continues unabated. Black resigned. Here is one reason why: } 24. Be3 gxf4 25. Bxd4 Nd3+ 26. Kd2 Nxc1 27. Bxg7 Rxf1 28. Kxc1 e5 29. Kd2 Bg4 30. f3 Be6 31. b3 Rg1 0-1
[Event "Moscow"]
[Site "?"]
[Date "1967.??.??"]
[Round "?"]
[White "Spassky"]
[Black "Bilek"]
[Result "1-0"]
[PlyCount "55"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 { This is known as the Richter-Rauzer Attack, a line which has been seen a lot at the highest levels of play but for some reason is not seen much in the amateur ranks. It leads to a complex game. } 6... Bd7 { The normal move is 3...e6. The bishop move has become known as the Modern Variation. } 7. Qd2 a6 { More consistent is 7...Rc8. There is no need to advance the a-pawn early in this line. } 8. O-O-O Rc8 9. f4 h6 10. Bxf6 gxf6 11. Be2 h5 { The idea here is to provide a square for the bishop at h6. Notice how cramped the Black king is. The monarch must remain in the center, since both flanks have crippled pawn structures. } 12. Kb1 { To avoid any nasty pins on the c1-h6 diagonal. } 12... e6 13. Rhf1 { Despite the fact that there are pawns at f6 and f7, Spassky realizes that the f-file will play an important role in the attack. } 13... b5 { Black tries to get something going on the opposite wing. } 14. Nxc6 Rxc6 15. Bf3 { There is the treat of a discovered attack with 16.e5. } 15... Rc5 16. f5 Qa5 { Other plans on the queenside might have been more effective, such as 16... b4 or 16...Qc7. But perhaps best was 16...Re5, which Bilek might have played had he seen what was coming! 16...exf5 17.Nd5 And the knight is so powerful that Black is actually lost. If you don't believe me, try playing the position again. } 17. fxe6 fxe6 { Now how does White make progress? The answer is stunning. } 18. e5 { This pawn wa lks onto the most heavily guarded square on the board! But Black cannot afford to open either the d-file or the f-file, so the capture must be made by the rook. } 18... Rxe5 { 18...fxe5 19.Qg5 } 19. Qf4 Rf5 { 19...Be7 20.Ne4 } 20. Qg3 Rg5 { 20...Kf7 This would have been a more effective way of guarding against the check at g6, but it has other drawbacks: 21.Ne4 d5 22.Qb8 dxe4 23. Rxd7+ Kg8 24.Qe8 Rh7 25.Qxe6+ Kh8 26.Rxh7+ Kxh7 27.Qxf5+ } 21. Qh4 d5 { Otherwise 22.Ne4 would be a crusher! Now White demolishes the defensive barrier with an effective sacrifice. } 22. Bxd5 exd5 23. Rxf6 { The new threats are Qxg5 and Nxd5. } 23... Rhg8 24. Nxd5 Bg4 { Now Spassky finishes elegantly. Do you see how? This is a very enjoyable position (for Spassky). } 25. Rxf8+ { Black resigned. The exposed king is soon checkmated. } 25... Kxf8 { 25...Rxf8 26.Qxg5 Rf7 27.Qe5+ Kd8 28.Nb6+ Bd7 29.Qb8+ Ke7 30.Rxd7+ Kf6 31.Qf4+ etc. } 26. Rf1+ Ke8 27. Nf6+ Kd8 28. Nxg8 { and the rook falls, after which the White pieces will easily checkmate the Black king. } 1-0