Four Knights Game — opening family

49 catalogued lines · ECO C47–C50

The shortest catalogued line of the family runs 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 — the position below. The continuation chips count how many catalogued lines extend this head with each next move; explore the full tree below and play any branch against the engine.

Variations tree of the Four Knights Game family

Click any move to jump to that position; switch branches at any point with the alternative moves. Test your knowledge plays the shown position against the engine.

Start

49 variations of “Four Knights Game” · win% from 1.5M rated games · ♞ Test your knowledge vs engine

Main continuations

Bb5 · 24 d4 · 9 Nxe5 · 3 a3 · 2 g3 · 2 Nd5 · 1

All 49 lines

Name	ECO	Main line length
Four Knights Game	C47	6 plies
Four Knights Game: Glek System	C47	7 plies
Four Knights Game: Gunsberg Variation	C47	7 plies
Four Knights Game: Scotch Variation	C47	7 plies
Four Knights Game: Naroditsky Variation	C47	7 plies
Four Knights Game: Italian Variation	C47	7 plies
Four Knights Game: Spanish Variation	C48	7 plies
Four Knights Game: Halloween Gambit	C47	7 plies
Four Knights Game: Scotch Variation Accepted	C47	8 plies
Four Knights Game: Spanish Variation, Rubinstein Variation	C48	8 plies
Four Knights Game: Spanish Variation, Classical Variation	C48	8 plies
Four Knights Game: Spanish Variation, Double Spanish	C49	8 plies
Four Knights Game: Italian Variation	C50	8 plies
Four Knights Game: Gunsberg Variation, Provincial Opening	C47	9 plies
Four Knights Game: Scotch Variation, Krause Gambit	C47	9 plies
Four Knights Game: Scotch Variation, Belgrade Gambit	C47	9 plies
Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation	C48	9 plies
Four Knights Game: Spanish Variation, Rubinstein Variation	C48	9 plies
Four Knights Game: Spanish Variation, Ranken Variation	C48	9 plies
Four Knights Game: Spanish Variation, Rubinstein Variation Accepted	C48	9 plies
Four Knights Game: Scotch Variation, Oxford Gambit	C47	10 plies
Four Knights Game: Italian Variation, Noa Gambit	C47	9 plies
Four Knights Game: Scotch Variation, Krause Gambit, Leonhardt Defense	C47	10 plies
Four Knights Game: Scotch Variation, Schmid Defense	C47	10 plies
Four Knights Game: Spanish Variation, Double Spanish	C49	11 plies
Four Knights Game: Spanish Variation, Rubinstein Variation	C48	11 plies
Four Knights Game: Spanish Variation, Nimzowitsch Variation	C49	11 plies
Four Knights Game: Spanish Variation, Symmetrical Variation	C49	12 plies
Four Knights Game: Scotch Variation, Belgrade Gambit, Modern Defense	C47	12 plies
Four Knights Game: Spanish Variation	C49	12 plies
Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Variation	C48	12 plies
Four Knights Game: Spanish Variation, Rubinstein Variation, Marshall Gambit	C48	12 plies
Four Knights Game: Spanish Variation, Symmetrical Variation	C49	13 plies
Four Knights Game: Glek System	C47	13 plies
Four Knights Game: Spanish Variation, Symmetrical Variation, Tarrasch Variation	C49	14 plies
Four Knights Game: Spanish Variation, Alatortsev Variation	C49	14 plies
Four Knights Game: Spanish Variation, Symmetrical Variation	C49	14 plies
Four Knights Game: Spanish Variation, Svenonius Variation	C49	14 plies
Four Knights Game: Spanish Variation, Gunsberg Counterattack	C49	14 plies
Four Knights Game: Spanish Variation, Janowski Variation	C49	15 plies
Four Knights Game: Halloween Gambit, Oldtimer Variation	C47	16 plies
Four Knights Game: Spanish Variation, Symmetrical Variation, Metger Unpin	C49	16 plies
Four Knights Game: Scotch Variation Accepted, Main Line	C47	17 plies
Four Knights Game: Spanish Variation, Bardeleben Variation	C48	18 plies
Four Knights Game: Spanish Variation, Rubinstein Variation, Maróczy Variation	C48	18 plies
Four Knights Game: Spanish Variation, Symmetrical Variation, Blake Variation	C49	20 plies
Four Knights Game: Spanish Variation, Symmetrical Variation	C49	20 plies
Four Knights Game: Spanish Variation, Spielmann Variation	C48	20 plies
Four Knights Game: Halloween Gambit, Plasma Variation	C47	22 plies