5.Axf7+ Rxf7 6.Ce5+  - variante de Lolli

  5.d4  - variante de Ghulam Kassin

  5.Cc3  - variante de McDonnell

  5.Ce5 Dh4+ 6.Rf1  - gambito Salvio

                            6...Cf6 - defensa Santa María

                            6...Ch6 - variante de Silberschmidt

                            6...f3 - variante de Cochrane

                            6...Cc6 - variante de Herzfeld

  5.0-0

          5...d5 6.exd5 gxf3 - defensa Brentano

          5...gxf3 6.Dxf3

                                6...De7 7.d4 - defensa de From

                                6...Df6 ---> Defensa Sarratt

                                          7.e5 Dxe5 8.Axf7+ Rxf7 9.d4 Dxd4+

                                                                                     Df5

                                                          8.d3 Ah6 9.Cc3 Ce7 10.Ad2

                                                                                                   Cbc6 - Paulsen