Also known as 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Nbd7 5. e3 Be7 6. Nc3 0-0 7. Rc1 Re8 8. Qc2 a6 9. cxd5 exd5 10. Bd3 c6 11. 0-0 Ne4 12. Bf4
following Queen’s Gambit Declined (1. d4 d5 2. Nf3 Nf6 3. c4 e6), a trap laid by White (4. Bg5 Nbd7 5. e3 Be7 6. Nc3 0-0 7. Rc1 Re8 8. Qc2 a6 9. cxd5 exd5 10. Bd3 c6 11. 0-0 Ne4 12. Bf4); after 12… f5 13 Nxd5, White wins a pawn
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).