alexgoei Wrote:my answer for 2002 part A Q2 Points Question.
I found so few entries wondering if I have missed out anything.
There wasn't much.
Dead TCs-
211N to R should be prevented by CD unless occupied by a parallel move so hence should require "(CD or 212R)"
211R to N should not be locked by CD.
You are right that 211R to N should be locked by (DE or 212N) EXCEPT that by including the point-to-point the move of 211 requires 212N ANYWAY so the track entry is actually superfluous because of that decision.
Similar comments apply to 212: the locking relative to CD should only be affecting 212 from R to N and be "(CD or 211N)".
Route calling: remember that you need to show the calling of the "lead" points!
You have 134B(M) calling 212R, you have said that for 212 to go R you need 211R so therefore you should have made 134B(M) call 211R; otherwise it just ain't going to work is it...... so there are several of these to think about.
You'd still want to put this calling in, whether or not you actually put in the point-point locking.
If you don't show point-point then you need also to show the route locking after 134B(M) on 211's CT; if you do show point-point then you don't [since 134B(M) holds 212R and 212 holds 211R]