Is the Z32 cipher solved?

Yes. The Z32 cipher decodes to 'I AM THE ZODIAC KILLER' (18 message letters + 14 filler characters). The total of 32 characters encodes Arthur Leigh Allen's house number at 32 Fresno Street, Vallejo. Key symbols are verified through Z408 cross-referencing: filled square = L (10/10), half-filled square = L (11/11), anchor = C (cross-cipher verified), crosshairs = D (4/4).

Z32 Cipher Decoded: Encrypted & Decrypted Grids With Symbol Key

Property	Value
Date Sent	June 26, 1970
Length	32 characters
Accompanying Message	"The Map coupled with this code will tell you where the bomb is set"
Decoded Message	I AM THE ZODIAC KILLER

Z32 — ENCRYPTED (17 columns × 2 rows)

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	C	△	J	I	■	O	ꞰK	⚓	Ⅎ	A	M	▲	Ω	O	R	T	G	1.
2.	X	⊙	F	D	V	Jᴿ	◪	H	C	E	L	⊕	P	W	△			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

Z32 — DECODED: I AM THE ZODIAC KILLER

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	c	I	j	I	L	O	K	C	f	A	M	A	Z	o	R	T	g	1.
2.	x	E	f	D	v	j	L	H	c	E	l	d	p	w	I			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

Bold = "I AM THE ZODIAC KILLER" (18 letters) Lowercase = Filler (14 letters)

"I AM THE ZODIAC KILLER" — Complete Mapping

Letter	Position	Row	Col	Symbol	Source
I	4	1	4	I	Plain
A	10	1	10	A	Plain
M	11	1	11	M	Plain
T	16	1	16	T	Plain
H	25	2	8	H	Plain
E	19	2	2	⊙	Z408: 56% = E
Z	13	1	13	Ω	Omega = Z (last Greek letter)
O	6	1	6	O	Plain
D	21	2	4	D	Plain
I	2	1	2	△	Z408: 78% = I
A	12	1	12	▲	Z408: A/S/I
C	8	1	8	⚓	Cross-cipher verified
K	7	1	7	ꞰK	Mirrored K
I	32	2	15	△	Z408: 78% = I
L	5	1	5	■	Z408: 100% = L
L	24	2	7	◪	Z408: 100% = L
E	27	2	10	E	Plain
R	15	1	15	R	Plain

Symbol Verifications from Z408

■ (Filled Square) = L — 100% VERIFIED

Row	Col	Encrypted	Decrypted
4	5	■	L
7	16	■	L
8	5	■	L
9	17	■	L
15	7	■	L
17	15	■	L
18	9	■	L
20	14	■	L
22	4	■	L
22	5	■	L

10/10 = 100%

◪ (Half-filled Square) = L — 100% VERIFIED

Row	Col	Encrypted	Decrypted
1	2	◪	L
1	9	◪	L
4	12	◪	L
13	8	◪	L
16	14	◪	L
16	15	◪	L
17	9	◪	L
17	10	◪	L
19	1	◪	L
20	13	◪	L
22	15	◪	L

11/11 = 100%

⚓ (Anchor) = C — CROSS-CIPHER VERIFIED

Cipher	Position	Decodes To
Z340	Row 3, Col 3	C
Z32	Position 8	C
Z13	Position 10	C

The anchor = C = The PARADICE letter.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	C	△	J	I	■	O	ꞰK	⚓	Ⅎ	A	M	▲	Ω	O	R	T	G	1.
2.	X	⊙	F	D	V	Jᴿ	◪	H	C	E	L	⊕	P	W	△			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	c	I	j	I	L	O	K	C	f	A	M	A	Z	o	R	T	g	1.
2.	x	E	f	D	v	j	L	H	c	E	l	d	p	w	I			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

Row	Col	Encrypted	Decrypted
4	5	■	L
7	16	■	L
8	5	■	L
9	17	■	L
15	7	■	L
17	15	■	L
18	9	■	L
20	14	■	L
22	4	■	L
22	5	■	L

Row	Col	Encrypted	Decrypted
1	2	◪	L
1	9	◪	L
4	12	◪	L
13	8	◪	L
16	14	◪	L
16	15	◪	L
17	9	◪	L
17	10	◪	L
19	1	◪	L
20	13	◪	L
22	15	◪	L

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	C	△	J	I	■	O	ꞰK	⚓	Ⅎ	A	M	▲	Ω	O	R	T	G	1.
2.	X	⊙	F	D	V	Jᴿ	◪	H	C	E	L	⊕	P	W	△			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17
1.	c	I	j	I	L	O	K	C	f	A	M	A	Z	o	R	T	g	1.
2.	x	E	f	D	v	j	L	H	c	E	l	d	p	w	I			2.
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17

Row	Col	Encrypted	Decrypted
4	5	■	L
7	16	■	L
8	5	■	L
9	17	■	L
15	7	■	L
17	15	■	L
18	9	■	L
20	14	■	L
22	4	■	L
22	5	■	L

Row	Col	Encrypted	Decrypted
1	2	◪	L
1	9	◪	L
4	12	◪	L
13	8	◪	L
16	14	◪	L
16	15	◪	L
17	9	◪	L
17	10	◪	L
19	1	◪	L
20	13	◪	L
22	15	◪	L