A second Kampbelmann Hard is tough on paper, but gives way routinely to a systematic bypass.
Here is the grid well into the bypass, with a large number of cells held in reserve by box filling naked pairs.
In the trace, we’re at value 9, just before r5 is resolved.
The rest is routine follow up.
Next week, the third and last Kampbelmann, Hard 143, is harder, carrying into line marking, after giving an opportunity to show a box 3-fill (West) in the trace.