Nc3 e6 The position may readily be reached by a number of different move orders.

One can only guess why he did not repeat this move order.

It can also be reached from the alternate move order 1.

The critical test of Black's move order is 5.

By playing the move order with 8 f3 and 9 g4, Adams made that kind of counter impossible.

Today, Black usually employs a different move order, such as 1.

The opening is not a series of specific moves, but rather a system that can be played from many different move orders.

Yet it can also be played against Black's more common closed defenses, usually through a move order that begins with 1.

The position can also arise from the less common move order 1.

Two of the most commonly seen move orders are 1.