Since... 1994!

Steinitz Gambit

One of Loyd's specialties was developing problems with the worst looking obviously wrong move as the key. The "Steinitz Gambit" composed in 1903 is one such problem.

Sam Loyd, 1903

(White: Kf1, Ra5, Rf6, Nb6, Ne4, Bb5, Bg7, b4, d2. Black: Ke5, Re8, Rh2, Bg3, Bg8, Na2, Nh1, a6, b7, c3, e6, f2, h4)

White to move and mate in 3 moves