The game becomes tactical and from the time spent it's clear that both players were trying to remember their analysis.
1. e2e4  1... c7c5  2. g1f3  2... e7e6  3. d2d4  3... c5d4  4. f3d4  4... b8c6  5. b1c3  5... d8c7  6. c1e3  6... a7a6  7. d1d2  7... g8f6  8. e1c1 White plays the English Attack, a fashionable system against many variations of the Sicilian Defense. Note that the pawn is still on f2, so he is not yet committed the traditional f3-g4 attacking plan. 8... f8e7  9. f2f4 [%c_effect f4;square;f4;type;Interesting;persistent;true] An even more aggressive plan. 9... b7b5  10. e4e5 