Neo-Indian Attack

The Neo-Indian Attack is a chess opening that begins with the moves:


 * 1. d4 Nf6
 * 2. c4 e6
 * 3. Bg5

This opening is also known as the Seirawan Attack, after top 1980s player Yasser Seirawan.

Description
The pinning of the f6-knight looks similar to the Torre Attack, but while the Torre is fairly common, the Neo-Indian is rarely played. The move order has been used by players such as David Janowski against Edward Lasker in New York City 1922. The opening has been considered a possible opening surprise in the Secrets of Opening Surprises series.

The most common responses from Black are:
 * 3...h6 which the bishop to move again, and unlike the Trompowsky Attack, 4.Bxf6 will not leave Black with doubled pawns.
 * 3...Bb4+ which can transpose to the Leningrad Variation of the Nimzo-Indian Defense after 4.Nc3, or lead to unique variations after 4.Nd2.
 * 3...c5 4.d5
 * 3...Be7

Unless the game transposes to another variation, the Neo-Indian is classified as E00 by the Encyclopaedia of Chess Openings.