WAY - a puzzle construction set

The puzzle box contains 18 wooden blocks which consist of four basic forms: I (4), L (6), S (2), C (6). By joining the circular faces end to end on a horizontal surface, the building blocks can be assembled in a multitude of ways that create free-standing circuits, with no beginning or end.

		I	L	S	C	Description	Solution
1	2				2	Use 2 C blocks to form the simplest circuit, the only one consisting of 2 blocks only.
2	3		2		1	Use 2 L blocks and 1 C to form the only circuit consisting of 3 blocks.
3	4		2		2	Use 2 L blocks and 2 C to form a free-standing circuit consisting of 4 blocks.
4	4				4	Use 4 C blocks to form a free-standing cube circuit. This circuit fits into a box with the side length of twice the diameter of the circular faces (2x2x2).
5	5		2	1	2	This circuit consists of 5 blocks.
6	6		2	1	3	This circuit consists of 6 blocks, but only 1 L is allowed to touch the horizontal surface.
7	18	4	6	2	6	Use all 18 blocks to form a circuit within the box provided, 6x6x1.
8	18	4	6	2	6	Use all 18 blocks to form a circuit fitting into the box 3x3x4.
9	6		2		4	Use 2 L blocks and 4 C to form a circuit, that also stands upside down.
10	8	?	?	?	?	Use 8 blocks to form a circuit fitting into the box 4x4x1 and 2x2x4.
11	9		6		3	This circuit consists of 9 blocks, but only 2 L are allowed to touch the horizontal surface.
12	18	4	6	2	6	Use all 18 blocks to form a circuit fitting into the box 3x2x6.
13	12	2	4		6	Use this 12 blocks to form a circuit fitting into the box 4x2x3.
14	10	2	2	1	5	Use this 10 blocks to form a circuit standing on the horizontal surface 2x2.
15	18	4	6	2	6	Use all 18 blocks to form 4 circuits within the box provided, 6x6x1.
16	10		4	2	4	Use two Puzzle No. 5 to form a circuit by rotating only 2 blocks.
17	13		6	1	6	This circuit fits into the cube box, 3x3x3.
18	9		3		6	This circuit also stands upside down.
19	10	2		2	6	Use this 10 blocks to form a circuit standing on the horizontal surface 2x2.
20	12		6		6	Use this 12 blocks to form a circuit fitting into the box 2x2x6.
21	16	4	6		6	Use this 16 blocks to form a circuit fitting into the box 2x2x8.
22	6		2	1	3	This circuit also stands upside down.
23	4		2	1	1	Use this 4 blocks to form a circuit.
24	6				6	Use this 6 blocks to form a circuit.
25	10		4		6	Use this 10 blocks to form a circuit fitting into the box 2x2x5.
26	6		2	1	3	This circuit consists of 6 blocks, but only 1 C is allowed to touch the horizontal surface.
27	16	4	6		6	Use this 16 blocks to form a circuit fitting into the box 3x3x4 and standing on the horizontal surface like puzzle No. 23.
28	9		4	1	4	This circuit fits into the box 3x3x2.
29	16	4	6		6	This circuit fits into the box 4x2x4.
30	10	2	2	1	5	Use this 10 blocks to form a circuit standing on the horizontal surface 3x2.
31	18	4	6	2	6	Use all 18 blocks to form a circuit fitting into the box 9x4x1.
32	10	4	2	1	3	This circuit also stands upside down.
33	9	1	2	2	4	This circuit consists of 9 blocks, but only two blocks are allowed to touch the horizontal surface.
34	12	1	6	2	3	Use this 12 blocks to form 2 circuits with the same course.
35	6		3		3	This circuit also stands upside down.
36	14	4	4		6	Use this 14 blocks to form a circuit fitting into the box 2x2x7.
37	12		4	2	6	Use this 12 blocks to form 2 circuits fitting into the box 3x2x4. The 2 circuits also stand upside down.
38	18	4	6	2	6	Use all 18 blocks to form 5 circuits within the box provided, 6x6x1. This puzzle has no solution. Why?
39	7	1	2	2	2	Looking for the circuit with the largest hight.
40	12	2	6		4	Use this 12 blocks to form a circuit fitting into the box 3x2x4.
41	10	4	4		2	Use this 10 blocks to form a circuit fitting into the box 2x2x5.
42	12	1	4	2	5	This circuit fits into the box 3x2x5.
43	12		4	2	6	This circuit fits into the box 3x2x5.
44	10	2	2		6	Use this 10 blocks to form a circuit fitting into the box 2x2x5.
45	8		2		6	This circuit fits into the box 2x2x4.
46	7		4	1	2	This circuit fits into the box 5x4x1.
47	10		4		6	This circuit fits into the cube box, 3x3x3.
48	14	2	4	2	6	This circuit fits into the box 4x2x4.
49	9		4		5	This circuit fits into the box 3x2x3, but does not stand upside down.
50	10		4	2	4	This circuit fits into the box 3x2x4.
51	8	4			4	This circuit fits into the box 2x2x4.
52	11	3		2	6	Use this 11 blocks to form a circuit standing on the horizontal surface 2x2.
53	4		4			Use 4 L blocks to form a circuit in two ways.
54	8		4	2	2	Use this 8 blocks to form a circuit standing on the horizontal surface 3x2.
55						The next puzzle will be published here on Thursday, 31. May.