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The Modern Benoni is a chess opening that begins with the moves 1.d4 Nf6 2.c4 c5 3.d5 e6.It is classified under the ECO codes A60–A79. After the initial moves, Black proceeds to capture on d5, creating a majority of black pawns on the queenside.
The Benko Gambit, also known as the Volga Gambit, begins 1.d4 Nf6 2.c4 c5 3.d5 b5. Play usually continues 4.cxb5 a6 5.bxa6 Bxa6. Black sacrifices a pawn for open lines and long-term positional pressure on the queen's side.
When the Bind is discussed as an opening, it is defined as 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4. [ 1 ] [ 2 ] [ 3 ] The Maróczy Bind opening is a continuation of the Sicilian Defence, Accelerated Dragon , where 5.c4 is the characteristic move.
The Nimzo-Indian Defence is a popular defence to 1.d4, and in this case White has obtained a version with colours reversed and an extra tempo. The notes above give the three typical branches of the Nimzowitsch-Larsen Attack: (1) playing against an e5/d5 centre, (2) allowing ...e5 but contesting ...d5 and (3) playing against a d5/c5 centre.
The same position can be reached by transposition from a Queen's Pawn Game after 1.d4 e6 2.e4 d5 or the declining of a Blackmar–Diemer Gambit after 1.d4 d5 2.e4 e6. White's options include defending the e4-pawn with 3.Nc3 or 3.Nd2, advancing it with 3.e5, or exchanging it with 3.exd5, each of which leads to different types of positions.
In chess, an irregular opening is an opening considered unusual or unorthodox. In the early 19th century the term was used for any opening not beginning with 1.e4 e5 (the Open Game ) or 1.d4 d5 (the Closed Game ).
White's 1.d3 releases their c1-bishop and makes a modest claim for the centre, but since it does not stake out as large a share of the centre as 1.d4 does, it is not a popular opening move. Of the twenty possible first moves for White, it ranks tenth in popularity.
An alternative approach for White is 3.Bc4, delaying d2–d4, or forgoing it entirely, playing d2–d3 instead. The move 3.Bc4 is also White's route to a possible Légal Trap. Some continuations: 3...Nc6 transposes to the Semi-Italian Opening. [36] 3...f5 is the López Countergambit: [37] 4.d4 transposes to the Philidor Countergambit. [38]