In reply to Mark Collins:
Apologies for being momentarily too lazy to quote all the sources, but I believe the below is a quite factual summary
1 - (over two years ago) Sharma bolted the route, tried to work it, managed to do all the single moves but could not conceive himself linking the whole thing, wrote it off as unclimbable for him and made it an open project under the name La Dura Dura (check climbing.com interview "Sharma Half Life or summat")
2 - (fall 2011 or spring 2012?) Ondra comes around to Oliana and, with 9bs red pointed in as little as 3 days, asks for Chris for something really hard and Chris shows him the project. BUT seeing Adam linking some sections motivates Chris to try and guess what, before long he's having some good links too
3 - (late fall 2012) Adam is back in Oliana (with a proposed first 9b+ in the bag) in at least two different trips (before and after the La Sportiva bouldering comp in Stockholm) but can't do it. By the time he leaves, Chris is actually closer to the send than Adam. But with Adam gone, Chris loses motivation (check interview on 9b.ning.org)
4 - (Jan 2013) Two more trips by Adam (opening of a Montura shop in Italy in between) and finally the send comes.