Also known as Schliemann-Jänisch defense, Schliemann-Jänisch gambit, Jänisch gambit, Jaenisch gambit, 1. e4 e5 2. Nf3 Nc6 3. Bb5 f5
chess opening variation of the Ruy Lopez (3….f5)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).