Black demonstrates convincing equality in the game continuation, so White should probably study an alternative to this move.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... d7d6 An interesting variation of the Ruy Lopez that is recommended by GM Gawain Jones in an excellent course. 6. f1e1  6... c8d7  7. c2c3  7... g7g6  8. d2d4  8... f8g7 The development of the bishop on g7 makes Black's position a little more active than usual, since on e7 the bishop doesn't have as much range. 9. h2h3 A move that is always useful in the Ruy Lopez, either to prevent a pin with Bg4 or to develop the bishop on e3 without fear of Ng4. 9... e8g8 