In reply to ams558:
I think there have been so few ascents or attempts of Hiunchuli that a failure rate is meaningless.
Worth looking at
http://publications.americanalpineclub.org/articles/13201212650/Singu-Chuli...
Singu Chuli has had a few ascents up those nice southern faces and ridges but it's also worth noting that it's 'backside' was being visited a few years back when people (Viesturs etc) were making attempts at the east ridge of Annapurna. I think at least one team climbed up SC as acclimatisation, probably via the descent mentioned in the link above, and I remember reading of climbers bivying up there. I'm sure CLIMB has recorded this, but with no index to them I can't be arsed digging it up.
Post edited at 04:31