This position from Yildiz -- Dembo, Mardin 2011 (Chess Informant 113/81) is not atypical.
Black to move
Yelena Dembo, who annotated her victory for Chess Informant, describes her move here as a mistake 14...b4? answered by a mistake by her opponent 15.g5?
Looking through the game, I thought Black had the better game with an attack that seemed much faster than anything that White could muster. Indeed, this game serves to recommend the Sicilian Defense. But, it is not so easy for me to discern why 14...b4 and 15.g5 are errors. It seems to me that Black has an advantage in either case. Black's 14...b4 and Dembo's suggested 14...Rxc3 both lead to advantage. White's 15.g5 and Dembo's suggestions 15...Nd1 or 15...fxe6 all fail to stem the tide of the Black assault on the king.