TC12 (Out) @ YR (GS 4126)
TC13 (In) @ YYYY (GS 3925)

Route Checks:
1) Total gradient arrows
2) Number of bridges crossing water
3) Number of times you join a Red road
4) List in order, the black letters obscuring your route
5) Most frequently visited SH
6) Lowest SH
7) Highest SH
8) GL crossed most times
9) GS containing most Southerly point
10) Number of times you cross a railway

Expressing the route card in this way tells you what you had to do:

Each row was a grid square containing junctions. Each column represented the number of junctions to visit for a particular colour change. For example, in GS 3325 there were 2 junctions where you went from white to white, and 1 junction where you went from white to yellow. The ?s were junctions that were indistinct, so an accurate value could not be given. Two tricky answers required. RC4, avoiding the 'I' of 'Inn' then via SH44 was the shortest way to visit six YY junctions. RC9, 3223 was definitely more South than 3423.

Route Checks Answers
1) 1  2) 4  3) 4  4) SKnn  5) 6  6) 5  7) 77  8) 27 or 28   9) 3223  10) 8