From Weesen* reach the building at pt.1428 1km south east of the summit and ascend north west to Fiderschenboden. Go up the first gully left of the summit, bounded on the left by a rock rib (more rock ribs and gullies further left). From the col turn right to reach the summit. Descend via the south west flank.
*Or discreet parking at 700m, map.geo.admin.ch grid coordinates: 726300 223200.