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

tright Ruy Lopez, Schliemann Defence rd bd kd bd rd pd pd pd pd pd nl nd bl qd pd pl pl pl pl ql pl pl pl rl bl kl rl Common moves: 9. f4 - Main Line 9. Ne5 - Sax Attack 9. Nxa7 - Svidler Attack Now Black's attack against g2 is a real one. Defending g2 with moves like 9.0-0 or 9.Rg1 is too slow; Black will have time to execute her secondary threat of ...a6 and ...Bd7. The clever 9. f4 solves this problem by defending g2 with gain of tempo, while threatening to give the knight a beautiful square on e5 to retreat to, at the cost of restoring material equality (9...Qxf4 is the main reply). 9. Ne5+ c6 10.f4 as played by Gyula Sax is just the same moves in a different order. But there is an alternative in the controversial 9. Nxa7+!? as played by Peter Svidler. It has a very positive score for White, but from a very small sample size. If you can't see what a brilliant move 9.Nxa7+ is, it's probably because the Big 9.f4 industry has hired stooges to infiltrate our message boards and talk it down Magnus Carlsen can't see what a brilliant move 9.Nxa7+ is either. Ruy_Lopez#Schliemann_Defence:_3...f5