Cambridge Springs Defense
Encyclopedia
In chess
Chess
Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...

, the Cambridge Springs Defense (or less commonly, the Pillsbury Variation) is a variation of the Queen's Gambit Declined
Queen's Gambit Declined
The Queen's Gambit Declined is a chess opening in which Black declines a pawn offered by White in the Queen's Gambit:This is known as the Orthodox Line of the Queen's Gambit Declined...

 and begins with the moves:
1. d4 d5
2. c4 e6
3. Nc3 Nf6
4. Bg5 Nbd7
5. Nf3 c6
6. e3 Qa5


Black breaks the pin
Pin (chess)
In chess, a pin is a situation brought on by an attacking piece in which a defending piece cannot move without exposing a more valuable defending piece on its other side to capture by the attacking piece...

 on the h4–d8 diagonal and forms a pin of his own on the c3 knight (exploiting the absence of the White's queen bishop from the queenside). If Black later plays dxc4, there may be threats against the g5-bishop. Note that 5. cxd5 cannot win a pawn because of the Elephant Trap
Elephant Trap
In chess, the Elephant Trap is a faulty attempt by White to win a pawn in a popular variation of the Queen's Gambit Declined. This simple trap has snared thousands of players, generally amateurs....

. The main line continues 7. Nd2 Bb4 with the threat of ...Ne4 and pressure along the a5–e1 diagonal.

The Encyclopaedia of Chess Openings
Encyclopaedia of Chess Openings
The Encyclopaedia of Chess Openings is a classification system for the opening moves in a game of chess. It is presented as a five volume book collection describing chess openings...

 code is D52.

Background

The first recorded use of the Cambridge Springs was by Emanuel Lasker
Emanuel Lasker
Emanuel Lasker was a German chess player, mathematician, and philosopher who was World Chess Champion for 27 years...

 in 1892. The name derives from a 1904 tournament in Cambridge Springs
Cambridge Springs, Pennsylvania
Cambridge Springs is a borough in Crawford County, Pennsylvania, United States. The population was 2,363 at the 2000 census.- History :The village of Cambridge was settled in 1822 and was named for the town of Cambridge, Massachusetts...

, Pennsylvania
Pennsylvania
The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

 in which the defense was used several times. Practitioners of the opening have included Efim Bogoljubov, Vasily Smyslov
Vasily Smyslov
Vasily Vasilyevich Smyslov was a Soviet and Russian chess grandmaster, and was World Chess Champion from 1957 to 1958. He was a Candidate for the World Chess Championship on eight occasions . Smyslov was twice equal first at the Soviet Championship , and his total of 17 Chess Olympiad medals won...

, and Garry Kasparov
Garry Kasparov
Garry Kimovich Kasparov is a Russian chess grandmaster, a former World Chess Champion, writer, political activist, and one of the greatest chess players of all time....

.

The line remains popular among amateurs because there are several traps White must avoid. For example, 7.Nd2 Bb4 8.Qc2 0-0 9.Bd3?? dxc4! (threatening ...Qxg5) 10.Bxf6 cxd3! (a zwischenzug
Zwischenzug
The zwischenzug is a chess tactic in which a player, instead of playing the expected move first interpolates another move, posing an immediate threat that the opponent must answer, then plays the expected move...

) 11.Qxd3 Nxf6 and Black has won a piece.

Continuations

White has several choices on his seventh move. The most common are:
  • 7. Nd2 (the main line) immediately breaks the pin on the c3 knight and defends e4; 7...Bb4 is answered by 8. Qc2, defending the c3 knight and covering e4.
  • 7. cxd5 avoids complications by clarifying the situation in the center. Black's strongest is the recapture 7...Nxd5, continuing the attack on c3.
  • 7. Bxf6 avoids tactics involving discovered attacks on the g5-bishop.

Representative game

Capablanca
José Raúl Capablanca
José Raúl Capablanca y Graupera was a Cuban chess player who was world chess champion from 1921 to 1927. One of the greatest players of all time, he was renowned for his exceptional endgame skill and speed of play...

 vs. Alekhine
Alexander Alekhine
Alexander Alexandrovich Alekhine was the fourth World Chess Champion. He is often considered one of the greatest chess players ever.By the age of twenty-two, he was already among the strongest chess players in the world. During the 1920s, he won most of the tournaments in which he played...

, Buenos Aires
Buenos Aires
Buenos Aires is the capital and largest city of Argentina, and the second-largest metropolitan area in South America, after São Paulo. It is located on the western shore of the estuary of the Río de la Plata, on the southeastern coast of the South American continent...

, World Championship Match
World Chess Championship 1927
The 1927 World Chess Championship was played between José Raúl Capablanca and Alexander Alekhine. It was played in Buenos Aires from September 16 to November 29, 1927...

, 1927:

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2 dxc4 9.Bxf6 Nxf6 10.Nxc4 Qc7 11.a3 Be7 12.Be2 O-O 13.O-O Bd7 14.b4 b6 15.Bf3 Rac8 16.Rfd1 Rfd8 17.Rac1 Be8 18.g3 Nd5 19.Nb2 Qb8 20.Nd3 Bg5 21.Rb1 Qb7 22.e4 Nxc3 23.Qxc3 Qe7 24.h4 Bh6 25.Ne5 g6 26.Ng4 Bg7 27.e5 h5 28.Ne3 c5 29.bxc5 bxc5 30.d5 exd5 31.Nxd5 Qe6 32.Nf6+ Bxf6 33.exf6 Rxd1+ 34.Rxd1 Bc6 35.Re1 Qf5 36.Re3 c4 37.a4 a5 38.Bg2 Bxg2 39.Kxg2 Qd5+ 40.Kh2 Qf5 41.Rf3 Qc5 42.Rf4 Kh7 43.Rd4 Qc6 44.Qxa5 c3 45.Qa7 Kg8 46.Qe7 Qb6 47.Qd7 Qc5 48.Re4 Qxf2+ 49.Kh3 Qf1+ 50.Kh2 Qf2+ 51.Kh3 Rf8 52.Qc6 Qf1+ 53.Kh2 Qf2+ 54.Kh3 Qf1+ 55.Kh2 Kh7 56.Qc4 Qf2+ 57.Kh3 Qg1 58.Re2 Qf1+ 59.Kh2 Qxf6 60.a5 Rd8 61.a6 Qf1 62.Qe4 Rd2 63.Rxd2 cxd2 64.a7 d1=Q 65.a8=Q Qg1+ 66.Kh3 Qdf1+ 0–1 (67. Qg2 Qh1#)

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