1. c2c4  1... e7e5  2. b1c3  2... g8f6  3. g1f3  3... b8c6  4. d2d3 [%c_effect d3;square;d3;type;Interesting;persistent;true] An interesting choice by Giri, leading to a position without much forced theory, a Sicilian Defense with inverted colors. 4... d7d5 