50 Years Ago

On Apr. 17th 1970, just after the conclusion USSR vs. Rest of the World match, a blitz tournament took place in Herceg Novi, then part of Yugoslavia.


Many of the world class players who participated in the USSR match joined the blitz tournament. Among them were three ex-world champions (Smyslov, Petrosian, and Tal), one future world champion (Fischer would win the title two years later), other players who had participated in the world championship matches and tournaments, and still others who would in the future.


Despite several renowned Soviet blitz players, it was Fischer, then in his prime, who captured first place. By a large margin.


The difference between Fischer and second placed Tal (who was one of the renowned Soviet players), was an outstanding 4 ½ points.


Many of the games were not recorded, which was understandable in the pre-computer days. However, many Tal’s games (about half) could not be reconstructed or were not available after play. This is all more surprising given that Tal was known for his phenomenal memory.


Still we have some wonderful games from the tournament. Various games of the top two players from the tournament are given below. Their games are still popular and enjoyable five decades later.







GM Fischer-IM Ostojic
Blitz Game
Herceg Novi, Apr. 17 1970
[This game has been published in various publications and blogs, including this one.]
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Nxc6 bxc6 7.e5 Ng8 8.Bc4 Bg7 9.Bf4 Qa5 10.O-O Bxe5 11.Bxe5 Qxe5 12.Re1 Qc7

13.Qd4! +- (13.Qd5 would also work but this is the fastest way to victory.) 13…f6 14.Bxg8 Rxg8 15.Qxf6 d5 16.Re2 Ba6 17.Nxd5 cxd5 18.Qxa6 Rf8 19.Rae1 Rf7 20.Qe6 Rd8 21.c3 Kf8 22.g3 d4 23.cxd4 Rxd4 24.Qe5 Qxe5 25.Rxe5 Rd2 26.R1e2 Rxe2 27.Rxe2 Rf6 28.Kf1 Rc6 29.Ke1 e6 30.Kd2 Ke7 31.Re4 Rb6 32.b3 Ra6 33.a4 Kd6 34.Rh4 h5 35.Rd4+ Ke7 36.Kc3 Rc6+ 37.Rc4 Ra6 38.Rc7+ Kf6 39.Kb4 Rb6+ 40.Kc4 a6 41.a5 Rd6 42.b4 Rd2 43.Kc5 Rxf2 44.Kb6 e5 45.Kxa6 e4 46.b5 e3 47.Rc1 Ke5 48.b6 Rg2 49.b7 Rb2 50.Ka7 g5 51.b8=Q+ Rxb8 52.Kxb8 1-0


GM Tal-GM Fischer
Blitz Game
Herceg Novi, Apr. 17 1970
[For most of the game it is even. White eventually gets the advantage, only to see the advantage, and then the game, slip away.]
1.e4 c5 2.Nf3 d6 3.Nc3 e5 4.Bc4 Be7 5.d3 Nf6 6.O-O Nc6 7.Ne1!? (A move deserving of more attention. ECO gives 7.Ng5 O-O 8.f4 h6 9.Nf3 exf4, leading to an equal game.) 7…O-O 8.f4 [Despite position’s almost pacific appearance, the game has a lot of tension. From this position, played 33 years later, Black chose 8.exf4 and soon gained the advantage: 9.Bxf4 Be6 10.Bxe6 fxe6 11.h3 Qe8 12.Bh2 Qg6 13.Nf3 Nh5 14.Ne2 Rf7 15.Nd2 Raf8 16.Rxf7 Rxf7 17.c3 Bh4 18.Nc4 d5 19.exd5 exd5 20.Ne5 Nxe5 21.Bxe5 Rf2 22.g4 Qg5 23.Bg3 Bxg3 24.Nxg3 Qf4 25.Nf1 Ng3 0-1 (Kim Pilgaard – George-Gabriel Grigore, Kings Cup, Bucharest, 2003).] 8…a6 9.a4 exf4 10.Bxf4 Be6 11.Bxe6 fxe6 12.Bg3 Qb6 13.Qd2 Ng4 14.Nf3 Nd4 15.Rab1 Nxf3+ 16.gxf3 Ne5 17.Kg2 Ng6 18.Ne2 Nh4+ 19.Bxh4 Bxh4 20.b4 Qc7 21.bxc5 dxc5 22.a5 Rf6 23.f4 Raf8 24.Rb6 Bg5 25.e5 Rf5 26.Rxe6 Qf7 27.Rd6 Bxf4 28.Rxf4 Rxf4 29.Nxf4 Qxf4 30.Qxf4 Rxf4 31.Rd7 (White has the advantage due to his advanced pawns and Black’s isolated king on the back rank. But the game still needs to be won!) 31…Ra4 32.e6 Kf8 33.Rf7+ Ke8 34.Rxg7 Rxa5 35.Rxb7 Ra2 36.Kf3 Rxc2 37.Rxh7 c4 38.d4 c3 39.d5 Rd2 40.Ke4 c2 41.Rc7 Kd8 42.Rc4 a5 43.h4 a4 44.Ke5 a3 45.d6 Re2+ 46.Kf5 Rf2+ 47.Kg4 a2




48.d7?? (White falters at the moment of truth ; 48.e7+ Kd7 49.Rc7+ Kxd6 50.e8=Q Kxc7 51.Qe5+ Kd7 52.Qd4+ Ke7 53.Qb4+ Ke6 54.Qb6+ Kd7 55.Qb7+ Ke8 56.Qc8+ and it’s a draw!) 48…Ke7 49.Rc8 Rd2 50.Re8+ Kf6 51.e7 Rxd7 (Black promotes first and gives the first check. Bobby, like most of his games of the tournament, was also probably ahead in time.) 0-1


GM Tal-GM Uhlmann
Blitz Game
Herceg Novi, Apr. 17 1970
[One does not give Tal a free tempo!]
1.g3 d5 2.Bg2 Nf6 3.c4 dxc4 4.Nf3 Nbd7 5.O-O a6 6.Na3 c5 7.Nxc4 e6 8.d4 Rb8? (The rook does nothing except to get itself into trouble. Better, and more enterprising, is 7…Nb6!?) 9.Bf4 Ra8 10.dxc5 Nxc5? (Better for Black is 10….Nd5, and while not winning, it has the dual benefits of not losing more tempi and getting somewhat out of the pin.) 11.Bd6 Nxc5 12.Bxf8 Kxf8 13.Qd4 Nd7 14.Rac1 h5 15.Rfd1 Qf6 16.e4 Qxd4 17.Rxd4 N5f6 18.Nd6 Ke7 11.Qxd8+ Kxd8 12.Rfd1+ Nfd7 13.Nb6 Ra7 14.Bb8!






GM Tal-GM Borislav Ivkov
Blitz Game
Herceg Novi, Apr. 17 1970
1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Bg5 h6 5.Be3 b6 6.Nf3 Bb7 7.Bd3 Nd7 (When Black makes this move the message he sends out is, “I’m going to play …e5 or …c5.” If he doesn’t make either of these two moves, then the message becomes, “Attack me!”. Black doesn’t make this error, but Tal still attacks!) 8.Qd2 c5 9.O-O-O Ngf6 10.b3 c4 11.Bxc4 Nxe4 12.Nxe4 Bxe4 13.Rhe1 Bxf3 14.gxf3 e6 15.Bf4 Nf6



16.Bxe6! fxe6 17.Rxe6+ Kf7 18.Rxd6 (White also has 18.d5) 18…Qc8 19.Be5 Rd8 20.Rxd8 Qxd8 21.Rg1 Qd7 22.Qd3 Qf5 23.Qc4+ Qe6 24.Qc7+ Qe7 25.Qc4+ Qe6 26.Qd3 Qf5 27.Qc4+ Qe6 28.Qxe6+ Kxe6 29.Rxg6 … 1-0

GM Tal-GM Korchnoi
Blitz Game
Herceg Novi, Apr. 17 1970
1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 a6 5.exd5 exd5 6.Be2 c4 7.O-O Bd6 8.Re1 Ne7 9.b3 b5 10.a4 c3 11.Nf1 b4 12.Ne5 O-O 13.Bf4 f6? 14.Nd3 Bxf4 15.Nxf4 Qd6 16.Bf3! Nbc6 17.Ne3 Qxf4 18.Nxd5 Nxd5 19.Bxd5+ Kh8 20.Bxc6 Ra7 21.Qe2 Qxd4 22.Rad1 Qc5 23.Qe8 Raf7 24.Rd5 Qb6 25.Qxf7 1-0

Fischer, the Invincible

Recently, I was going over some games from the 1963/64 US Championship. That tournament stands out for at least three reasons.

(1) The winner was the first, and so far, the only one, to achieve a perfect score in the Championship.


(2) Fischer won his sixth Championship in a row. He would eventually win eight of them, which was another perfect score as he played in a total of eight Championships.


(3) Fischer played a King’s Gambit, a rarity in a national championship. It was also one of his best games.
Here is the game, annotated by Fischer, with a few additional notes (mostly to highlight some background information) by me (RME).



GM Fischer-GM Evans
US Ch.
New York, Nov. 16 1963
[Fischer, “Exclusive Commentary on Round Two”, Chess Life and Review, Jan. 1964]

1.e4 e5 2.f4 [I knew that my opponent had some prepared line (since he usually plays the Sicilian) but felt that he would be unfamiliar with the King’s Gambit. Besides, I’d made up my mind to play it in this tournament anyway.] 2…exf4 3.Bc4 [Better than 3.Nf3 which is practically refuted by 3…d6 (see my analysis in the American Chess Quarterly.)] 3…Qh4+ [Turning it into an old-fashioned slugfest. The moderns frown on this move and prefer to fight in the center with 3…Nf6 4.Nc3 c6, etc. (But 4…Qh4+ is, by far, still the most common response in the Bishop’s Gambit as it displaces White’s king and prevent him from transposing into other variants of the King’s Gambit. RME.)] 4.Kf1 d6?

[Evans said this game would set chess back a hundred years. He didn’t know how right he was! The defense he chooses was also played by LaBourdonnais against MacDonnell (20th Match Game, 1834) which continued 5.d4 Bg4 6.Qd3 Nc6 7.Bxf7+? Kxf7 8.Qb3+ Kg6 9.Qxb7 Nxd4 10.Qxa8 f3 with a winning attack. More usual is 4…g5 (or d5) 5.Nc3 Bg7 6.d4 Ne7 7.Nf3 Qh5 8.h4 h6 and it’s a hard game.

(Here is the game in its entirety.

Macdonnell-de la Bourdonnais
Match, London, 1834
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 d6 5.d4 Bg4 6.Qd3 Nc6 7.Bxf7+ Kxf7 8.Qb3+ Kg6 9.Qxb7 Nxd4 10.Qxa8 Nf6 11.Na3 f3 12.g3 Bh3+ 13.Ke1 Qg4 14.Be3 d5 15.Qxa7 Nc6 16.Qxc7 d4 17.Bd2 Qxe4+ 18.Kd1 f2 19.Nxh3 Qf3+ 20.Kc1 Qxh1+ 0-1. RME)]

5.Nc3? [Returning the compliment. It’s natural that White should want to save the juicy tempo (5.Nf3!) and I make the same mistake as MacDonnell by delaying this move.] 5…Be6! [I overlooked this move. Now Black has a choice of where to put his Queen once she’s attacked. (This move also eliminates any quick victories by White as his bishop is thwarted. RME)] 6.Qe2

[Moving the bishop back is really not an option.

Berlin, 1847
1.e4 e5 2.f4 exf4 3.Bc4 Qh4+ 4.Kf1 d6 5.Nc3 Be6 6.Be2?! Qf6 7.d4 g5 8.d5 Bc8 9.Nf3 h6 10.h4 Be7 11.Nb5 Na6 12.Bd2 Qg7 13.Bc3 f6 14.Kg1 g4 15.Nfd4 f3 16.Bf1 Bd8 17.gxf3 gxf3+ 18.Kf2 Nc5 19.Qxf3 a6 20.Na3 Bg4 21.Qf4 h5 22.Re1 Nh6 23.Rg1 Be7 24.b4 Na4 25.Ne6 Qh7 26.Nxc7+ Kd7 27.Nxa8 Nxc3 28.Nb6+ Kc7 29.Nbc4 f5 30.Kg2 fxe4 31.Kh1 Nxd5 32.Qxe4 Qxe4+ 33.Rxe4 Bf3+ 34.Bg2 Bxe4 35.Bxe4 Nxb4 36.Rg7 Kd8 37.Bxb7 Nf5 38.Rf7 Nxh4 39.Na5 d5 40.c3 Ke8 41.Rxe7+ Kxe7 42.cxb4 Kd6 43.Bxa6 Nf5 44.Bd3 Ne7 45.Nc2 Rg8 46.Nb7+ Ke6 47.Nc5+ Kd6 48.a4 Nc6 49.Nb7+ Ke7 50.Nc5 Kd6 1/2-1/2. Fischer didn’t mention this game, but in all fairness, he didn’t have access to the Internet. RME]

6…c6 7.Nf3 (Inaccurate. Having made the mistake of delaying this move once, White should hold off a while longer and play 7.d4, which does not permit Black’s Queen to retreat to e7 without relinquishing his “f” pawn.) 7…Qe7 (If 7…Qh5 8.Nd5! Now, however, Black has time to consolidate his king’s position.) 8.d4 Bxc4 9.Qxc4 g5 (Despite White’s strong center and great lead in development, Black’s position is not easy to crack. If 10.h4 g4 11.Ne1 Bh6, etc.) 10.e5 d5 [During the game I thought Black’s best defense was 10…dxe5 11.Nxe5 (11.dxe5 Nd7 12.Ne4 Nxe5 13.Nxe5 Qxe5 14.Bd2 is unclear) 11…Nd7 12.h4 Nxe5 13.dxe5 Qxe5 14.hxg5 O-O-O 15.Bxf4 Qf5 with equality.] 11.Qd3 [11.Nxd5 cxd5 12.Qc8+ Qd8 13.Qxb7 Nd7 is unsound. (14.Nxg5? Rb8). Now the threat is simply 11.Qf5.] 11…Na6 12.Ne2 (Not 12.Qf5 Nh6 13.Qxg5 Qxg5 14.Nxg5 Nb4 15.Bxf4 Nxc2 16.Rd1 Nf5 and Black wins.) 12…Nb4 (12…f6 loses 13.Qf5 Bg7 14.exf6 Bxf6 15.Bxf4! gxf4 16.Nxf4 with a winning attack. It is important to repel White’s queen from its present diagonal.) 13.Qd1 O-O-O (Very complicated, and possibly better, is 13.c3 which leads to a more active defense.) 14.c3 Na6 15.h4 g4 16.Nh2! h5 (Better was 16…f3 17.gxf3 gxf3 18.Nxf3 f6 although White’s king is quite safe and Black lags in development. Also to be considered was 16…Qxh4 17.Nxf4! g3 18.Qg4+ Qxg4 19.Nxg4 with a powerful ending.) 17.Nxf4

17…Qxh4? [The losing move. Relatively best is 17…Kb8 (preventing Nxh5!) (Fischer is referring to White’s threat of 18.Nxh5! Rxh5 19.Qxg4+, winning the rook and the game. RME) but his game is already bad. (The advanced pawn on e5 which is crippling Black’s play on the kingside. RME).] 18.Kg1 (Black apparently underestimated the strength of this move. He has no adequate defense now to the twin threats of 19.Nxg4 and Nf1.) 18…Nh6 (The only way to avoid outright material loss. Black originally intended 18…Bh6 but 19.Nf1 followed by Rxh5 stands him up.) 19.Nf1 Qe7 20.Nxh5 Rg8 (Black already knew he was lost and was shaking his head in amazement at how quickly White’s dead pieces had sprung to life.) 21.Nfg3 Rg6 22.Nf4 Rg5 (If 22…Rg8 23.Nxd5, etc.) 23.Be3 Nc7 (The last hope. 23…f6 is answered by 24.Qd2 fxe5 25.Nxd5, winning a full rook.) 24.Qd2 Rg8 25.Nfe2 (This piquant retreat wins a piece, putting a clear end to black’s agony.) 25…f6 (Black is still hoping for a miracle.) 26.exf6 Qxf6 27.Bxh6 Bd6 28.Rf1 Qe6 29.Bf4 Rde8 30.Rh6 Bxf4 31.Qxf4 Qe7 32.Rf6
[Tripling on the Bishop file. (And being material up, the victory is not too far off. RME)] 32…Ne6 33.Qe5 Ng5 34.Qxe7 Rxe7 35.Rf8+ (Trading down to skin and bones.) 35…Rxf8 36.Rxf8+ 1-0


Back to School!

Labor Day has traditionally been the last day of summer vacation. It’s a time to go back to school and re-engage the brain.


Perhaps you already started school. But whether you did or not, it’s time to exercise more than a suntan. We have to get you ready for your daily quizzes, your tests, and your exams.


What better way start than a short, but not-so-easy chess quiz?




Here it is! You can’t use the Internet, nor books, and no help from your friends. It is a quiz, after all!


(well…. ok – you can use friendly help.)


Answers and explanations available on PDF file, should you need them (and you will).








1) Where did the word, CHECKMATE, come from?


a) The Australians had morbid, slightly amusing, phrase that was most popular during WWII.  It was, “CHECK ON THE MATE PLEASE. HE’S DEAD”.

b) A term in which a sailing ship would briefly hit (or “checked”) another boat in order to board it, esp. in acts of piracy.

c) A Sanskrit phrase meaning “THE KING IS DEAD”.

d) An ancient Pharaoh’s curse.



2) Which chess piece is also the name of a GM?

(a) KING


(c) ROOK




3) Who was not a World Chess Champion from the United States before Bobby Fischer?




(d) Trick Question! – Fischer was the first World Champion from the United States




4) Which word does not belong?





(e) DRAW


5) Which word does not belong?

(a) KING




(e) PAWN

(f) ROOK



(i) ELO



6) Which word does not belong?







7) A “RINGED PIECE” refers to:

(a) A pendant that hangs from the neck that is, or features, a chess piece.

(b) A piece of art created by Ringo Starr, who was inspired by Lennon’s chess set that featured two sets of white pieces to indicate harmony.

(c) A piece on the chessboard with a ring around it, indicating that this piece was to be the one to deliver the checkmate.


8) What is the definition of SCACCHIC?

(a) [n. the Computer World Champion for 1981.]

(b) [n. a famous correspondence player of the 1950’s who came up with a new move in the Two Knights Defence.]

(c) [adj. of or relating to chess.]

(d) [adj. referring to the queenside in chess.]

(e) [adj. referring to a dive into the ocean by leaping far off the side of a cliff.]



Answers below : 



Chess Computers in 1977

Before we start, I capitalize the name of chess playing computers to clarify who (or what?) is playing White or Black. Now let’s get to the main event.






Chess computers, of course, had been in development for a couple of decades before 1977. But in that year, several notable events brought the chess computer to the public’s attention.


But let’s first mention that the International Computer Chess Association was established, which is important to this article, even if the public was not aware of it.


More worthy for public interest was the first microcomputer chess playing machines, CHESS CHALLENGER and BORIS, were created and sold to the general public. You could now buy a computer to play chess. Even better was the fact they were not too strong and existed more of a novelty than a challenge, making them easy prey to most players. Nevertheless, I heard many people brag how they “beat the computer”, or they were “better than a computer”. What they sometimes forget to mention they played the same opening repeatedly, until they got the result they wanted. Not exactly cheating, but not entirely honest either! (I must pause and smile here, as I the only reason I didn’t do such things was that I couldn’t afford these machines).


Also, in 1977, CHESS 4.6, a stronger machine than either CHESS CHALLENGER or BORIS, became the first chess computer to win a major chess tournament. That occurred at 84th Minnesota Open in February of 1977. It achieved an Expert USCF rating.


In August, SNEAKY PETE played in the U.S. Open. It was the first machine to do so, was promoted and gathered much attention, but its results were not impressive.

The December 1977 issue of Chess Life and Review had this to say;


“Computers were everywhere during the U.S. Open. A major attraction for the entire tournament was SNEAKY PETE. The poor machine had to stick it out on Board 69 for the entire two weeks and was constantly surrounded and scrutinized by Class As and Experts. SNEAKY rated 1209, was so nervous he lost seven games in a row. And every back-rank mate was immortalized in the daily games bulletins.”


In 1977, Michael Stean, who earlier in the year earned the GM title, became the first Grandmaster to lose a computer program.


CHESS 4.6-GM Michael Stean
Blitz Game
London, 1977
1.e4 b6 2.d4 Bb7 3.Nc3 c5 4.dxc5 (This does not seem best. 4.d5!? is probably better.) 4…bxc5 5.Be3 d6 6.Bb5+ Nd7 7.Nf3 e6 8.O-O a6 9.Bxd7+ Qxd7 10.Qd3 Ne7 11.Rad1 Rd8 12.Qc4 Ng6 13.Rfe1 Be7 14.Qb3 Qc6 15.Kh1 O-O 16.Bg5 Ba8 17.Bxe7 Nxe7 18.a4 Rb8 19.Qa2 Rb4 20.b3 f5 21.Ng5 fxe4 22.Ncxe4 Rxf2 23.Rxd6 Qxd6 24.Nxd6 Rxg2 25.Nge4 Rg4 26.c4 Nf5 27.h3 Ng3+ 28.Kh2 Rxe4 29.Qf2 h6 30.Nxe4 Nxe4 31.Qf3 Rb8 32.Rxe4 Rf8 33.Qg4 Bxe4 34.Qxe6+ Kh8 35.Qxe4 Rf6 36.Qe5 Rb6 37.Qxc5 Rxb3 38.Qc8+ Kh7 39.Qxa6 1-0

But this was a blitz game. Chess computers still could not compete against World Champions, either current or past, in blitz games, or under tournament conditions.


Fischer (yes, that one!) play three games against a chess computer. The first one is the most well-known and perhaps his best effort.


Greenblatt was the name of the programmer. I do not know the name of his computer, or if it even had one, so I’ll just use his name.


Here are the three games Fischer was known to have played after his 1972 World Championship win.


Cambridge, 1977
1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Nf6 5.Nc3 Bb4 6.Nf3 O-O 7.O-O [Fischer liked to experiment with the Bishop’s Gambit, probably as a result of publishing an article titled, The King’s Gambit is Busted, where he showed how Black should win after 1.e4 e5 2.f4 exf4 3.Nf3 d6. Here’s a game from his simul tour of 1964: GM Fischer-Nyman, Simul, Cicero, May 20 1964, 7.O-O Bxc3 8.dxc3 c6 9.Bc4 Qb6+ 10.Kh1 Nxe4 11.Qe1 Re8 12.Bxf4 Nd6 13.Bxd6 Rxe1 14.Raxe1 Bd7 15.Ng5 Na6 16.Rxf7 1-0.] 7…Nxd5 8.Nxd5 Bd6 9.d4 g5 10.Nxg5 Qxg5 11.e5 Bh3 12.Rf2 Bxe5 13.dxe5 c6

14.Bxf4 +- Qg7 15.Nf6+ Kh8 16.Qh5 Rd8 17.Qxh3 Na6 18.Rf3 Qg6 19.Rc1 Kg7 20.Rg3 Rh8 21.Qh6mate 1-0


Cambridge, 1977
1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.Nc3 cxd4 [Black tried the original 4…b6 in GM Božidar Ivanović-Grigic, Vinkovic, 1982 and lost after the spectacular 5.dxc5! bxc5 6.Qd5 Bxc3+ 7.bxc3 Qa5 8.Qxa8 Qxc3+ 9.Kd1! 1-0.] 5.Nxd4 Nc6 6.Be3 Nf6 7.Nxc6 bxc6 8.e5 Ng8 9.f4 f6 10.exf6 Nxf6 11.Bc4 d5 12.Be2 Rb8 13.b3 Ng4 14.Bd4 e5 15.fxe5 O-O 16.Bxg4 Qh4+ 17.g3 Qxg4 18.Qxg4 Bxg4 19.Rf1 Rxf1+ 20.Kxf1 c5 21.Bf2 Bxe5 22.Be1 Rf8+ 23.Kg2 Rf3 24.h3 Rxc3 25.Bxc3 Bxc3 26.Rf1 Bf5 27.Rf2 h5 28.Re2 Kf7 29.Re3 Bd4 30.Rf3 Ke6 31.c3 Be5 32.Re3 d4 33.cxd4 cxd4 34.Re1 d3 35.h4 d2 36.Rd1 Bc3 37.Kf2 Bg4 38.Rh1 Bd4+ 39.Kg2 [Any player would automatically see that promoting the pawn would force White to part with his rook for bishop (winning the exchange and eventually win the game). Fischer, however, wants the rook for free.]
39…Kd5! 40.a3 Ke4 41.Rf1 Kd3 42.Kh2 Ke2 43.Kg2 Bh3+ 44.Kxh3 Kxf1 45.b4 d1=Q 46.Kh2 Qe2+ 47.Kh3 Qg2mate 0-1


Cambridge, 1977
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.Be3 O-O 9.Qd3 Be6 10.O-O Nbd7 11.Nd5 Rc8 12.Nxe7+ Qxe7 13.f3 d5 14.Nd2 Qb4 15.Nb3 dxe4 16.Qd1 Nd5 17.Ba7 b6 18.c3 Qe7 19.fxe4 Ne3 20.Qd3 Nxf1 21.Qxa6 Ne3 22.Bxb6 Qg5 23.g3 Ra8 24.Ba7 h5 25.Qb7 h4 26.Kf2 hxg3+ 27.hxg3 f5 28.exf5 Rxf5+ 29.Ke1 Raf8 30.Kd2 Nc4+ 31.Kc2 Qg6 32.Qe4 Nd6 33.Qc6 Rf2+ 34.Kd1 Bg4 35.Bxf2 Qd3+ 36.Kc1 Bxe2 37.Nd2 Rxf2 38.Qxd7 Rf1+ 39.Nxf1 Qd1mate 0-1



It would take another two decades for chess computers to score a win against World Champion.