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. Nxa7
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tright Ruy Lopez, Schliemann Defence rd bd kd bd rd nl pd pd pd pd nd bl qd pd pl pl pl pl ql pl pl pl rl bl kl rl Common moves: 9...Bd7 - Main Line 9...Kd8 - Leisebein Variation9...Bd7 is the main line. Black preserves castling rights and denies the a7-knight the chance of exchanging itself on c8, which would be the coward's way out. It looks as though the move overworks the f6-knight, but in fact there are tactical reasons why grabbing the e4-pawn doesn't lead to any advantage.
9...Kd8 invites 10.Nxc8 and it looks like White has no problems, but Black has a glimmer of hope based on the fact that g2 is still hanging. German correspondence player Peter Leisebein is the main champion of this line.
9...c6? 10.Nxc6! means the c8-bishop will have to go to d7 anyway, but with one fewer Black pawn on the board.Ruy Lopez