Give a pawn against the Sicilian for fast development and open lines: Nc3, Nf3, Bc4, castle, Qe2 and Rd1 against the d6 pawn. This is a intermediate opening course for White (ECO B21), written for players rated around 1250. Each move is explained and then drilled on a board; it is free.
Key ideas of Smith-Morra Gambit
After 3...dxc3 Nxc3 you are a pawn down but two moves ahead in development.
The standard set-up: Nf3, Bc4, O-O, Qe2 and Rd1, all aiming at d6 and f7.
Watch for Nd5 and Nb5 jumps against c7 and d6 when Black is careless.
If Black declines with ...Nf6 or ...d5, you get an Alapin-type centre for free.
The line trainer
The line trainer for Smith-Morra Gambit has 50 lines that grow out of 1. e4 c5 2. d4 cxd4 3. c3, learned a few new ones a day with spaced-repetition review.