1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... f8b4  5. c1d2  5... b4e7 Giving a check and then returning the same piece can be strange, after all, shouldn't we prioritize development and move the pieces only once in the opening $2 This maneuver, which has become thematic and is used in several similar opening systems, is based on the fact that the white bishop would actually be better off on c1 than on d2, for more reasons than one. This will become clear in this game, as we will see a few moves later.