| ECO | Opening Name | Variant | ||
|---|---|---|---|---|
| C48 | Four knights | Spanish variation |  Browse | View Opening |
| C48 | Four knights | Ranken variation | Browse | View Opening |
| C48 | Four knights | Spielmann variation | Browse | View Opening |
| C48 | Four knights | Spanish, Classical defence | Browse | View Opening |
| C48 | Four knights | Bardeleben variation | Browse | View Opening |
| C48 | Four knights | Marshall variation | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit, Bogolyubov variation | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit, 5.Be2 | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit Maroczy variation | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit, Exchange variation | Browse | View Opening |
| C48 | Four knights | Rubinstein counter-gambit, Henneberger variation | Browse | View Opening |
