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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 e7 pd f7 pd g7 pd h7 pd 7
6 a6   b6   c6   d6 pd e6   f6 g6   h6   6
5 a5   b5   c5   d5   e5 f5   g5   h5   5
4 a4   b4   c4   d4 pl e4 f4   g4   h4   4
3 a3   b3   c3   d3   e3   f3   g3   h3   3
2 a2 pl b2 pl c2 pl d2 e2 pl 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
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1. d4 d6

This variation on the Queen's Pawn Game is the second most common opening move for white. It is characterised by the moves:

  1. d4 d6

It is a fairly uncommon continuation of the Queen's Pawn Game, ranking fifth in popularity among master games. It comprises A41-A42.


The Averbakh System is listed as A42; the Wade Defense and all others are listed under A41.

Note the Averbakh System specifically is A42; if the first moves are played as listed here (1. d4 d6 2. c4 g6) but the system not reached, it is still A41.

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