Home › Openings › Owen Defense Owen Defense: Unicorn Variation ECO B00 · 1. e4 f6 2. d4 b6 3. c4 Bb7 Related variationsOwen Defense: Guatemala DefenseOwen Defense: Naselwaus GambitOwen Defense: Smith GambitOwen Defense: Hekili-Loa GambitOwen Defense: Wind GambitOwen Defense: Matovinsky Gambit Practice this opening · Play against the computer