Four Knights Game

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6. ECO C47–C50, 49 named variations.

C47

Four Knights Game

49 variations

Tactics from the Four Knights Game 200 puzzles

All Four Knights Game variations

Related openings

Sicilian Defense Ruy Lopez French Defense Italian Game King's Gambit Accepted Caro-Kann Defense Alekhine Defense King's Gambit Declined Scotch Game Petrov's Defense

ECO	Variation	Moves
C47	Four Knights Game 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6
C47	Glek System 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3
C47	Gunsberg Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3
C47	Halloween Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5
C47	Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3	1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3
C47	Naroditsky Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nd5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nd5
C47	Scotch Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4
C48	Spanish Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5
C50	Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6	1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6
C47	Scotch Variation Accepted 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4
C48	Spanish Variation, Classical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5
C49	Spanish Variation, Double Spanish 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4
C48	Spanish Variation, Rubinstein Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4
C47	Gunsberg Variation, Provincial Opening 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3 d6 5.h3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3 d6 5.h3
C47	Italian Variation, Noa Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Bxf7+	1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Bxf7+
C47	Scotch Variation, Belgrade Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5
C47	Scotch Variation, Krause Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5
C48	Spanish Variation, Ranken Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6
C48	Spanish Variation, Rubinstein Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2
C48	Spanish Variation, Rubinstein Variation Accepted 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxd4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxd4
C48	Spanish Variation, Rubinstein Variation, Henneberger Variation 1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.O-O	1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.O-O
C47	Scotch Variation, Krause Gambit, Leonhardt Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 Qe7	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 Qe7
C47	Scotch Variation, Oxford Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.d5 Nd4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.d5 Nd4
C47	Scotch Variation, Schmid Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Nxe4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Nxe4
C49	Spanish Variation, Double Spanish 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3
C49	Spanish Variation, Nimzowitsch Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Bxc6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Bxc6
C48	Spanish Variation, Rubinstein Variation 1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.Nxe5 Qe7 6.f4	1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Nd4 5.Nxe5 Qe7 6.f4
C47	Scotch Variation, Belgrade Gambit, Modern Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Qe2 f5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Qe2 f5
C49	Spanish Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3
C48	Spanish Variation, Rubinstein Variation, Marshall Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Ba4 Bc5 6.Nxe5 O-O	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Ba4 Bc5 6.Nxe5 O-O
C48	Spanish Variation, Rubinstein Variation, Marshall Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxe5 Bc5 6.O-O O-O	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxe5 Bc5 6.O-O O-O
C49	Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6
C47	Glek System 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3 d5 5.exd5 Nxd5 6.Bg2 Nxc3 7.bxc3	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.g3 d5 5.exd5 Nxd5 6.Bg2 Nxc3 7.bxc3
C49	Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Ne2	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Ne2
C49	Spanish Variation, Alatortsev Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Qe7 7.Ne2 d5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Qe7 7.Ne2 d5
C49	Spanish Variation, Gunsberg Counterattack 1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.O-O O-O 6.Nd5 Nxd5 7.exd5 e4	1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.O-O O-O 6.Nd5 Nxd5 7.exd5 e4
C49	Spanish Variation, Svenonius Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d5
C49	Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7
C49	Spanish Variation, Symmetrical Variation, Tarrasch Variation 1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Be6	1.e4 e5 2.Nf3 Nf6 3.Nc3 Nc6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Be6
C49	Spanish Variation, Janowski Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Re1	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Re1
C47	Halloween Gambit, Oldtimer Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Ng6 6.e5 Ng8 7.Bc4 Bb4 8.Qf3 f5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Ng6 6.e5 Ng8 7.Bc4 Bb4 8.Qf3 f5
C49	Spanish Variation, Symmetrical Variation, Metger Unpin 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7
C47	Scotch Variation Accepted, Main Line 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5 8.exd5 O-O 9.O-O	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 d5 8.exd5 O-O 9.O-O
C48	Spanish Variation, Bardeleben Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nxe5 7.d4 Bd6 8.f4 Nc6 9.e5 Bb4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O O-O 6.Nxe5 Nxe5 7.d4 Bd6 8.f4 Nc6 9.e5 Bb4
C48	Spanish Variation, Rubinstein Variation, Maróczy Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2 Nxf3+ 6.Bxf3 Bc5 7.O-O O-O 8.d3 d6 9.Na4 Bb6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Be2 Nxf3+ 6.Bxf3 Bc5 7.O-O O-O 8.d3 d6 9.Na4 Bb6
C48	Spanish Variation, Spielmann Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 dxc6 6.Nxe5 Nxe4 7.Nxe4 Qd4 8.O-O Qxe5 9.Re1 Be6 10.d4 Qd5	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 dxc6 6.Nxe5 Nxe4 7.Nxe4 Qd4 8.O-O Qxe5 9.Re1 Be6 10.d4 Qd5
C49	Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8 10.d4 Bg4	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7 9.Re1 Nd8 10.d4 Bg4
C49	Spanish Variation, Symmetrical Variation, Blake Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7 8.Nh4 c6 9.Bc4 d5 10.Bb3 Qd6	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Ne7 8.Nh4 c6 9.Bc4 d5 10.Bb3 Qd6
C47	Halloween Gambit, Plasma Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Nc6 6.d5 Ne5 7.f4 Ng6 8.e5 Ng8 9.d6 cxd6 10.exd6 Qf6 11.Nb5 Rb8	1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5 Nxe5 5.d4 Nc6 6.d5 Ne5 7.f4 Ng6 8.e5 Ng8 9.d6 cxd6 10.exd6 Qf6 11.Nb5 Rb8