Related Openings
Four knights - Rubinstein counter-gambit, Henneberger Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Nd4, O-O
Four knights - Rubinstein counter-gambit, Exchange Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Nd4, Nxd4
Four knights - Rubinstein counter-gambit Maroczy Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Nd4, Be2, Nxf3+, Bxf3, Bc5, O-O, O-O, d3, d6, Na4, Bb6
Four knights - Rubinstein counter-gambit, 5.Be2	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Nd4, Be2
Four knights - Rubinstein counter-gambit	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Nd4
Four knights - Marshall Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Bc5, O-O, O-O, Nxe5, Nd4
Four knights - Bardeleben Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Bc5, O-O, O-O, Nxe5, Nxe5, d4, Bd6, f4, Nc6, e5, Bb4
Four knights - Spanish, Classical defense	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, Bc5
Four knights - Spielmann Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, a6, Bxc6, dxc6, Nxe5, Nxe4, Nxe4, Qd4, O-O, Qxe5, Re1, Be6, d4, Qd5
Four knights - Ranken Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5, a6, Bxc6
Four knights - Spanish Variation	e4, e5, Nf3, Nc6, Nc3, Nf6, Bb5