Explore a surprising chess gambit against the Sicilian Defense invented by a 1600 ELO-rated player. Discover how the unconventional move 6.Qb5 in the Chekhover Variation violates classical opening principles yet presents tricky threats. Analyze various responses from Black, including defending the b7 pawn, developing the knight to f6 or e5, and alternative second moves. Learn to exploit this rare variation to counter the Sicilian Defense effectively, with detailed explanations of key positions and potential pitfalls for both sides.