Special puzzle for York S&B 2017

A message from Jetdoc:

Anax has set a special puzzle for the York S&B weekend (whether you’re planning to attend or not). To give you a chance to solve (or at least part-solve) it in advance, here it is as a PDF.

If you prefer to solve on-screen, you can also find an interactive version of the puzzle here.

The solution will be posted on this site on Monday 30 October.

Admin edit: A blog of this puzzle will be posted on this site on Sunday 29th October.

Looking forward to next weekend!