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The Queen's Knight Defense (also known as the Nimzowitsch Queen Pawn Defence, Bogoljubov–Mikenas Defense, or Lundin Defense) is a chess opening defined by the moves: 1. d4 Nc6. Unless the game transposes to another opening, the Encyclopedia of Chess Openings code for the Queen's Knight Defense is A40.
The Franco-Indian Defence is a chess opening characterized by the moves: 1.d4 e6. This play allows White to play 2.e4, entering the French Defence. If White wants to continue with a Queen's Pawn Game however, 2.c4 and 2.Nf3 usually transpose to a familiar opening such as the Queen's Gambit Declined, Nimzo-Indian or Queen's Indian.
Petrosian Variation of the King's Indian Defence – 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.d5 – named after Tigran Petrosian [10] Petrosian Variation of the Queen's Indian Defense – 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 – named after Tigran Petrosian [10] Petrov Defense – 1.e4 e5 2.Nf3 Nf6 – named after Alexander Petrov [7]
The Encyclopaedia of Chess Openings (ECO) identifies the Colle System as an uncommon continuation of the Queen's Pawn Game, assigning it the code D05. [a] In the ECO, the Colle system is defined by the line 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.c3. [1] Paul van der Sterren gives an identical definition, with the same moves played in the same ...
White can respond 3.Nc3, 3.Nd2, or 3.Bd2. The game often transposes to a Nimzo-Indian Defence, a Dutch Defence, a Queen's Gambit Declined, an English Defence, or a Bogo-Indian Defence. 3.Nc3 is likely to transpose into one of those openings: 3...Nf6 (Nimzo-Indian), 3...f5 (Dutch; Korn gives 3...Bxc3+ 4.bxc3 f5!, [3] played by Buckle) 3...d5 (an unusual form of QGD), or 3...b6 (English).
The Nimzowitsch Defence (named after Aron Nimzowitsch) is a somewhat uncommon chess opening characterised by the moves: . 1. e4 Nc6. This opening is an example of a hypermodern opening in which Black invites White to occupy the centre of the board at an early stage with pawns. [1]
The Danvers Opening hinders this by forcing Black (unless they want to sacrifice a pawn) to first defend the e-pawn (usually with 2...Nc6), then 3.Bc4 forces Black to make some compromise to defend against the mate threat; 3...g6 commits Black to fianchettoing the king bishop, 3...Qe7 blocks the bishop, and 3...Qf6 occupies knight's best square.
From that position, the main possibilities are 5.e5 (the main line), 5.exd5, 5.cxd5, and 5.Bg5. These possibilities can also be reached via transposition from the Mikenas–Carls Variation of the English Opening (1.c4 Nf6 2.Nc3 e6 3.e4), although if Black wishes to play this way, the optimal move order is 1.d4 Nf6 2.c4 e6 3.Nc3 Nc6.