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a b c d e f g h
8 a8 rd b8 nd c8 bd d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 pd c7 pd d7 pd e7 f7 pd g7 pd h7 pd 7
6 a6   b6   c6   d6   e6   f6 g6   h6   6
5 a5   b5   c5   d5   e5 pd f5   g5   h5   5
4 a4   b4   c4   d4 e4 pl f4   g4   h4   4
3 a3   b3   c3   d3   e3   f3   g3   h3   3
2 a2 pl b2 pl c2 pl d2 pl e2 f2 pl g2 pl h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 bl g1 nl h1 rl 1
a b c d e f g h
1. e4 e5

The Open Game, also known as the Double King's Pawn Game, is the second most common response to 1. e4, the King's Pawn Opening, behind the Sicilian Defense. It is characterised by the moves:

  1. e4 e5

It used to be the most common move for Black after King's Pawn Opening blocking 2. d4 and opening up Black's queen and dark square bishop.


ECO Codes[]

The Open Game includes the ECO codes C20-99.

ECO Code C20 contains all irregular Open Games. Specifically, it includes every response from white apart from:

The noteworthy openings in C20 are:

  • MacLeod Attack (2. c3)
  • Alapin's Opening (2. Ne2)
  • Portuguese Opening (2. Bb5)
  • Napoleon Opening (2. Qf3)
  • Wayward Queen Attack (2. Qh5)
  • Bongcloud Attack (2. Ke2?)

For a list of all other ECO Codes, see List of chess openings.


Sources[]

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