[%c_effect a5;square;a5;type;GreatFind;persistent;true] Advancing the pawn to a4 is a good plan that shows the advantage of the knight on b6 and the disadvantage of the knight on d2.
1. g1f3  1... d7d5  2. g2g3  2... b8d7  3. d2d4  3... d7b6 A strategically creative system: the b6-square is not the knight's natural habitat. The advantage is that it's more difficult for White to play the pawn to c4. 4. f1g2  4... c8f5  5. b2b3 [%c_effect b3;square;b3;type;Interesting;persistent;true] Not so much to fianchetto the bishop, but rather to play c4. 5... e7e6  6. e1g1  6... h7h6  7. c2c4  7... c7c6  8. b1d2 I don't really like this square for the knight, I think it could go to c3, either now or after c5. 8... g8f6  9. c1b2  9... f8e7  10. e2e3 A thematic move, making way for the queen on e2. 10... e8g8  11. d1e2 