You are right - their Maths paper incorporates puzzles - from their web site: "In addition the paper will contain questions of a more general puzzle type nature to test the pupilsâ€™ problem solving skills". They have refused to let me see past papers so can only hope our general practice will cover such things - sounds like NonVerbal Reasoning type questions to me.
The meetings at the school were all very reassuring - they maintain that there is a 50% pass mark on most of the papers for example. This doesn't fit with what you hear on the forum, so my early complacency has been replaced by frantic practicing panic
Still, my maths is improving daily.
Good to be in touch; thanks for all your contributions.