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
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 pd qd pl pl pl pl ql pl pl rl bl kl rl Common moves: 10...c6 - only move
Black needs to defend against the check while keeping the knight on f6 to deny the White queen access to h5.
10...c6 is a sensible move that leaves two White pieces hanging.
Ruy_Lopez#Schliemann_Defence:_3...f5