Chess Opening Theory/1. Nh3/1...d5

1…d5 - Amar Opening
This move takes space in the centre, and threatens to damage White's already vulnerable kingside pawn structure with 2...Bxh3 3. gxh3. White may put off Black’s threats or even encourage them, either in search of outrageous activity of their king’s rook, or a more subtle approach with 2. g3 (with perhaps f3 and Nf2 to follow). It should also be noted that 2. g3 e5 3. f4 Bxh3 4. Bxh3 exf4 is known as the Amar Gambit, which severely weakens White’s king and sacrifices a pawn for a kingside initiative. This line is considered dubious, and gives Black at least a slightly better chance. It could be said that 1... d5 falls into the trap laid by 1. Nh3.