Black has to make a common decision for Sicilian players: where to develop the f8-bishop.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. f1b5  3... b8d7  4. e1g1  4... a7a6  5. b5e2 [%c_effect e2;square;e2;type;Interesting;persistent;true] A currently fashionable move. 5... g8f6 