411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...f5/4. Nc3/4...fxe4/5. Nxe4/5...d5/6. Nxe5/6...dxe4/7. Nxc6/7...Qg5/8. Qe2/8...Nf6/9. f4/9...Qxf4/10. Ne5/10...c6/11. d4/11...Qh4/12. g3/12...Qh3
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
tright Ruy Lopez, Schliemann Defence rd bd kd bd rd pd pd pd pd pd nd bl nl pl pd pl qd pl pl pl ql pl rl bl kl rl Common moves: 13. Bc4 - only move
The b5-bishop is finally forced to move, and 13. Bc4 threatens to revoke Black's castling privileges with a check on f7.
13.Nxc6 would be refuted by the same ...a6 and ...Bd7 trick, pinning and winning the knight, that we saw earlier.Ruy_Lopez#Schliemann_Defence:_3...f5