LIVIGNO, Italy, Feb 12 - Choi Ga-on of South Korea denied American Chloe Kim a historic three-peat in the women's halfpipe snowboard at the Winter Olympics on Thursday, staging a remarkable comeback after a frightening crash nearly knocked her out of the contest.

Kim ended the night-time event with a silver, and bronze went to Mitsuki Ono of Japan in the mountain town of Livigno.