Ronen's Opening Survey: Marshall Gambit in the Slav (7 part series).
D10: QGD: semi-Slav, Marshall gambit 4. … Bb4.
Frank J. Marshall, who held the U.S. championship title for 29 years before he relinquished it in 1936, had such a combinative style that he likened himself to boxing legend Jack Dempsey, who always went for a quick knockout blow. He left us his legacy of the Marshall Attack in the Ruy Lopez - but lesser known perhaps is his “other” gambit, a similarly vicious line against the notoriously tough Slav Defense that was also christened the Marshall Gambit after its inventor