Assume a bicycle with horizontal fork ends (like the rear facing horizontal fork ends on a Surly Troll), with an IGH (Rohloff Speedhub 14) and no chain tensioner.
On a steep uphill in the easiest gear, the rear wheel might be pulled forwards and crooked.
Does a torque anchor prevent this? Or is a torque anchor used to solve a different problem? (I'm refering to this answer (https://bicycles.stackexchange.com/a/56660/31142) to my question about Surly + Rohloff which mentions a torque anchor.)