context: 1. g1f3  1... g8f6  2. g2g3  2... c7c5  3. f1g2  3... b8c6  4. c2c4  4... d8b6 A rare move, only Black's seventh most popular choice. The idea is to prevent the d2-d4 advance. There will be a transposition to a more familiar position in a few moves. 5. b1c3  5... e7e6  6. e1g1 This is a position known to theory, with almost two hundred games in the database. 6... f8e7  7. b2b3 A natural way of developing the bishop. 7... e8g8  8. c1b2  8... d7d6 [%c_effect d6;square;d6;type;Inaccuracy;persistent;true] A passive move that leaves White with a comfortable position after the e3/d4 plan. 9. e2e3  9... c8d7 