English opening (A10)
c4
c4
| English 1...Nf6 (A15) Nf6 | Nf6 English 1...Nf6 (A15) |
| English Anglo-Dutch defense (A10) f5 | b5 English Jaenisch gambit (A10) |
| English Caro-Kann defensive system (A11) c6 | c5 English symmetrical variation (A30) |
| English Jaenisch gambit (A10) b5 | c6 English Caro-Kann defensive system (A11) |
| English opening (A10) g6 | e5 English opening (A20) |
| English opening (A13) e6 | e6 English opening (A13) |
| English opening (A20) e5 | f5 English Anglo-Dutch defense (A10) |
| English symmetrical variation (A30) c5 | g6 English opening (A10) |