Lasker Trap The black pawn on d4 is stronger than it may appear. After 3.
dxe5 d4 the careless move 4.e3 can lead to the Lasker Trap. After 4...Bb4+ 5.Bd2 dxe3 (sacrificing the bishop) 6.Bxb4 is a blunder—Black continues with 6...exf2+ 7.Ke2 (7.Kxf2 does not work because of 7...Qxd1) 7...fxg1=N+ 8.Rxg1 Bg4+ and Black wins the queen with a winning position. The Lasker Trap is notable because it features a rare instance of an
underpromotion in practical play.
Spassky Variation In the Spassky Variation, White avoids the Lasker Trap by advancing 4.e4. Although Black can capture
en passant with 4...dxe3, the Lasker Trap depends on Black capturing the e-pawn after 4...Bb4+ 5.Bd2, which is not possible here. According to
Minev, after 4.e4? Nc6! Black will have the better game. == See also ==