Custom Chess Theory/1.e4/1...e5/2.Nf3/2...Bb4/3.Bb5

3. Bb5?! — Radium Gambit, Mohan Variation 3. Bb5?! is the Mohan Variation, with White responding by developing the bishop to b5. The two bishops face each other across the board, creating a mirrored position. 3... c6 attacks the Bishop. 3... a6 attacks the Bishop with a flank pawn. 3...Nf6 develops the knight and attacks White's e4-pawn. 3...Nc6?! develops naturally and reinforces Black's e5-pawn, but white can force a trade with 4. Bxc6 dxc6 (or 4...bxc6) 3...f6?! strengthens the e5-pawn and prepares further development but the center can get Cramped. Downsides: White's 3. Bb5?! does not immediately recover the e5-pawn or challenge Black's center. Both sides have spent developing their bishops, while the central tension remains. The Mohan Variation is characterized by creating a mirrored bishop setup within the Radium Gambit.