e4 e5 d4 ed
| Centre game (C??) Qd4 | Nf3 c5 Bc4 b5 Centre game Kieseritsky variation (C21) |
| Centre game Kieseritsky variation (C21) Nf3 c5 Bc4 b5 | Qd4 Centre game (C??) |
| Danish gambit (C21) c3 | c3 Danish gambit (C21) |
| Halasz gambit (C21) f4 | f4 Halasz gambit (C21) |