[1] Although it is called a trap because White wins the exchange, Black does obtain some compensation.

The trap begins with the moves: White threatens mate with 11.Qxh7# as well as 11.Bxb7 winning a bishop and a rook.

After either 10...Ne4 11.Bxe4 or 10...Qxg5 11.Bxb7, Black loses the exchange, but obtains compensation in the form of one or more pawns and possibly a weakened white king.

Former world champion José Raúl Capablanca allowed 10.Ng5 twice in consecutive games as Black against Max Euwe in Amsterdam, 1931, drawing both times.

The second game continued:[2] The line has been played several times over the years at the highest levels, including Portisch–Andersson 1983,[3] which ended in a draw, and Aronian–Postny 2005,[4] which White won.