Kopec System

Kopec System
abcdefgh
8
a8 black rook
b8 black knight
c8 black bishop
d8 black queen
e8 black king
f8 black bishop
g8 black knight
h8 black rook
a7 black pawn
b7 black pawn
d7 black pawn
e7 black pawn
f7 black pawn
g7 black pawn
h7 black pawn
c5 black pawn
e4 white pawn
c3 white pawn
f3 white knight
a2 white pawn
b2 white pawn
c2 white bishop
d2 white pawn
f2 white pawn
g2 white pawn
h2 white pawn
a1 white rook
b1 white knight
c1 white bishop
d1 white queen
e1 white king
h1 white rook
8
77
66
55
44
33
22
11
abcdefgh
Moves 1.e4 c5 2.Bd3, 3.Nf3, 4.c3, 5.Bc2
ECO B20
Named after Danny Kopec
Parent Sicilian Defense

The Kopec System is a chess opening variation of the Sicilian Defense characterized by the following moves:

  1. e4 c5
  2. Bd3!?

The Kopec System is named after the American International Master Danny Kopec. It was never played at the top level because it was thought that Black would instantly gain an advantage, because White’s bishop blocks the d-pawn.


Basics

With 2.Bd3!?, White seemingly blocks his d-pawn, violating the principle that "one should not block one's central pawns with pieces"; however, the bishop is not meant to stay on d3. On the third move, White will play Nf3, and on the fourth move, c3, vacating a square for the bishop, and then Bc2 on the fifth move. On move six, White will likely play d4. Much of the game's play revolves around White aiming for the perfect center, by playing a timely d2–d4 advance. White also usually plays h3 in order to prevent Black from trading his light-squared bishop with White's crucial knight at f3, which should support the critical d4 advance. In the event that this knight is traded, White will play d3 and maneuver more pieces to support the d4 advance eventually.

White's light-squared bishop (that initially blocks the d-pawn) is known as the "Kopec bishop". From seemingly passive play, it often springs to life from three diagonals, frequently switching between them. Those diagonals are the b1–h7 diagonal, the a2–g8 diagonal, and the a4–e8 diagonal.

White's queen knight usually maneuvers Nd2–f1–g3. Alternatively, it could be maneuvered Nd2–f1–e3, preventing a pin against the knight on f3, and threatening to jump into d5.

Kopec said that the Kopec System was useful for taking Sicilian players into Ruy Lopez type positions, where they would be less comfortable. Kopec also said that the Kopec was like the King's Indian Attack, but that the light-squared bishop is more useful on c2 than g2.

Variations

Black has a variety of ideas to try against the Kopec System. He can turn the game into a "Russian", "Dragon" or "French" position. After either 2...d6, 2...Nc6, or 2...e6, White will play 3.Nf3.

Black has several choices in terms of pawn structure. He can enter a "Dragon" structure, where Black plays ...d6 and ...g6. He can enter the "Russian" structure, where he plays ...d6, ...g6, and ...e5, placing a clamp on d4, at the cost of a hole on d5. Black can enter the "Lopez" structure, where he plays ...e5 at some point, without finachettoing his king's bishop, and placing a clamp on d4, at the cost of a hole on d5. In the "French" structure, Black plays ...e6 to support ...d5.

In all cases, the plan is the same: On the third move, White plays Nf3; on the fourth, c3; and on the fifth, Bc2. Regardless of structure, White will develop his pieces and aim for a pawn break on d4, supported by the pawn on c3.

See also

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.