1. e2e4  1... e7e5  2. g1f3  2... g8f6 Dominguez has no reason to deviate from the Petroff, an opening that served him so well in their first match. 3. f3e5  3... d7d6  4. e5f3  4... f6e4  5. b1c3  5... e4c3  6. d2c3 