Righthook (4 pieces)
Level of difficulty: Tracks:illegal combination:
They are not expected to turn around 180 degree in 2 baseplates
none
Level of difficulty: Tracks:
illegal combination:
medium Group 1 and Group 2 pieces (including blanks) They are not expected to have cross over junctions.
Acceptable combinations:
difficult Group 1, 2 and 3 pieces (including blanks) none