The Keres Attack puts Black into a rather defensive and potentially dangerous position. For this reason, many advocates of this defense tend to play the Najdorf Variation move order and then play 6...e6, transposing into the Scheveningen. The most prominent example of such a preference for the Najdorf move order was seen in World Chess Championship 1984, where after game one when Kasparov had difficulties in the opening, he never allowed the Keres Attack and finally switched to the Najdorf move order. The Najdorf move order, while eliminating 6.g4, allows white additional options such as 6. Bg5, and g4 is still a possible move after. Basically, the Najdorf move order delays g4 by one move making the attack vastly less powerful, meanwhile the Scheveningen move order speeds up kingside development making 6. Bg5 much less powerful. As the Keres' attack is feared more than 6. Bg5 the Najdorf move order is seen more at the highest level today. Because Najdorf's original intention was to play e5 all in one go and the history of the move order, openings beginning with 5. ...a6 are often put in the Scheveningen category if e6 is played immediately after.