Para-equestrian classification 4, 5, 6, 7, 12a/b, 13, 14, 21, 26a, 31a/b and 32 are allowed to have a whip which is held or used by a groom. Grade 1 drivers with Profiles 1, 2, 3, 4, 5, 6, 7, 9, 10a, 12a/b, 13, 14, 26a, 31a/b and 32 are allowed to have a brake operated by a groom. Grade 1 drivers with Profiles 1, 2, 3, 4, 5, 6, 7, 9, 10a, 12a/b, 13, 14, 26a, 31a/b and 32 are allowed to have a strap on feet or foot trough. Grade II is for riders who are higher functioning than Grade
Black Knights' Tango although if Black wishes to play this way, the optimal move order is 1.d4 Nf6 2.c4 e6 3.Nc3 Nc6. This ambitious move is playable but rarely seen. Black normally responds with 3...Ne5. Then after 4.e4 (inviting 4...Nxe4 5.Qd4 winning a knight), Black struck back in the center with 4...Ng6 5.f4 e5 in the seminal game Sämisch–Torre, Moscow 1925. However, Orlov considers both Torre's fourth and fifth moves inferior. He and Palliser both recommend instead 4...e6, after which play can become extremely sharp. For example, Elburg–Simmelink, correspondence 1999 continued 5.f4 Ng6 6.Bd3 exd5 7.e5 Ne4 8.cxd5 Qh4+ 9.g3 Bb4+! 10.Bd2 (Better