Neither did White get anything out of the opening here. The full symmetry suggests approximate equality, despite the extra tempo for White and the slightly improved position of his kingside knight.
1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. f3e5  3... d7d6  4. e5d3 One of the many attempts to get \"a game\" against the Petroff. 4... f6e4  5. d3f4  5... d6d5  6. d2d4  6... f8e7  7. f1d3  7... e8g8  8. e1g1  8... e4f6  9. h2h3  9... f8e8  10. f1e1 This obvious move is a novelty and was played after lengthy thought. 10... e7d6  11. e1e8  11... d8e8 