Table 1. Road game.

Level	Road width (cm)	Road length (cm)	Shaped road
Level 1	20	285	Fig. 4-a
Level 1A	20	230	Fig. 4-b
Level 2	21	190	Fig. 4-c
Level 3	16	490	Fig. 4-d
Level 4	16	390	Fig. 4-e
Level 4 A	15	400	Fig. 4-f
Level 5 A	11	660	Fig. 4-g
Level 5 B	11	430	Fig. 4-h
Level 6 A	7	450	Fig. 4-i
Level 6 B	7	500	Fig. 4-j
Level 6 C	7	550	Fig. 4-k
Level 7 A	7	530	Fig. 4-l
Level 7 B	7	600	Fig. 4-m