diff --git a/2015/07.py b/2015/07.py
new file mode 100644
index 0000000..cd20e44
--- /dev/null
+++ b/2015/07.py
@@ -0,0 +1,122 @@
+import re
+
+# Fill Input
+
+try:
+	with open("07.txt", 'r', encoding='utf-8') as file:
+		input = file.read()
+except Exception as e:
+	print(f"An error occurred: {e}")
+
+# Result
+def is_number(s:str):
+	return ord('0')<= ord(s[0]) and ord(s[0]) <=ord('9')
+
+dict = {}
+for line in input.split('\n'):
+	if re_match := re.search(r"([a-z]+|[0-9]+) ([A-Z]+) ([a-z]+|[0-9]+) -> ([a-z]+)", line):
+		v1 = re_match.group(1)
+		op = re_match.group(2)
+		v2 = re_match.group(3)
+		rs = re_match.group(4)
+		dict[rs] = [op,v1,v2]
+		continue
+
+	if re_match := re.search(r"(NOT) ([a-z]+) -> ([a-z]+)", line):
+		op = re_match.group(1)
+		v1 = re_match.group(2)
+		rs = re_match.group(3)
+		dict[rs] = [op,v1,None]
+		continue	
+
+
+	if re_match := re.search(r"([a-z]+|[0-9]+) -> ([a-z]+)", line):
+		v1 = re_match.group(1)
+		rs = re_match.group(2)
+		dict[rs] = [None,v1,None]
+		continue
+
+# Part B
+#dict["b"]=[None,..., None]
+
+to_dict = {}
+while len(dict):
+	for key in dict:
+		v = dict[key]
+
+		if not v[0] and (is_number(v[1]) or v[1] in to_dict):
+			to_dict[key] = v
+
+		if (is_number(v[1]) or v[1] in to_dict ) and (not v[2] or is_number(v[2]) or v[2] in to_dict):
+			to_dict[key] = v
+
+	
+	for key in to_dict:
+		if key in dict:
+			dict.pop(key)
+
+
+
+
+for key in to_dict:
+	v = to_dict[key]
+
+	if not v[0] and is_number(v[1]):
+		to_dict[key] = int(v[1])
+		continue
+
+	if not v[0] and v[1] in to_dict:
+		to_dict[key] = to_dict[v[1]]
+		continue
+
+	if v[0] == "NOT":
+		to_dict[key] = ~to_dict[v[1]]
+		continue
+	
+	if (v[1] in to_dict) and is_number(v[2]):
+		match v[0]:
+			case "LSHIFT":
+				to_dict[key] = to_dict[v[1]] << int(v[2])
+				continue
+			case "RSHIFT":
+				to_dict[key] = to_dict[v[1]] >> int(v[2])
+				continue
+			case "AND":
+				to_dict[key] = to_dict[v[1]] & int(v[2])
+				continue
+			case "OR":
+				to_dict[key] = to_dict[v[1]] | int(v[2])
+				continue
+	
+	if is_number(v[1]) and (v[2] in to_dict):
+		match v[0]:
+			case "LSHIFT":
+				to_dict[key] = int(v[1]) << to_dict[v[2]]
+				continue
+			case "RSHIFT":
+				to_dict[key] = int(v[1]) >> to_dict[v[2]]
+				continue
+			case "AND":
+				to_dict[key] = int(v[1]) & to_dict[v[2]]
+				continue
+			case "OR":
+				to_dict[key] = int(v[1]) | to_dict[v[2]]
+				continue
+	
+	if (v[1] in to_dict) and (v[2] in to_dict):
+		match v[0]:
+			case "LSHIFT":
+				to_dict[key] = to_dict[v[1]] << to_dict[v[2]]
+				continue
+			case "RSHIFT":
+				to_dict[key] = to_dict[v[1]] >> to_dict[v[2]]
+				continue
+			case "AND":
+				to_dict[key] = to_dict[v[1]] & to_dict[v[2]]
+				continue
+			case "OR":
+				to_dict[key] = to_dict[v[1]] | to_dict[v[2]]
+				continue
+	
+
+print(to_dict["a"])
diff --git a/2015/08.py b/2015/08.py
new file mode 100644
index 0000000..e4c452c
--- /dev/null
+++ b/2015/08.py
@@ -0,0 +1,37 @@
+import re
+
+# Fill Input
+
+try:
+	with open("08.txt", 'r', encoding='utf-8') as file:
+		input = file.read()
+except Exception as e:
+	print(f"An error occurred: {e}")
+
+# Result
+res1, res2 = 0, 0
+for line in input.split('\n'):
+#for line in ["\"\"", "\"abc\"", "\"aaa\\\"aaa\"", "\"\\x27\""]:
+	#res2 = 0
+	it = iter(line)
+	while c:=next(it, None):
+		match c:
+			case '\"':
+				res1+=1
+				res2+= 1
+				pass
+			case '\\':
+				res1+=1
+				res2+=1
+				match c:= next(it):
+					case 'x':
+						next(it)
+						next(it)
+						res1+=2
+					case '\"':
+						res2+=1
+			case _:
+				pass
+	res2+=2
+	print(res1, res2+len(line))
+print(res1, res2)
diff --git a/2015/09.py b/2015/09.py
new file mode 100644
index 0000000..a86ba39
--- /dev/null
+++ b/2015/09.py
@@ -0,0 +1,58 @@
+import re
+
+# Fill Input
+
+try:
+	with open("09.txt", 'r', encoding='utf-8') as file:
+		input = file.read()
+except Exception as e:
+	print(f"An error occurred: {e}")
+
+# Result
+def perm(X, visited = []):
+	if len(visited) ==  len(X):
+		return [visited]
+
+	res  = []
+
+	for a in X:
+		if a not in visited:
+			for i in perm(X, [*visited, a]):
+				res.append(i)
+
+	return res;
+	
+path = {}
+for line in input.split('\n'):
+	if not (re_match := re.search(r"(\w+) to (\w+) = (\d+)", line)):
+		break
+
+	f = re_match.group(1) 
+	t = re_match.group(2) 
+	d = int(re_match.group(3)) 
+
+	if f in path:
+		path[f][t] = d
+	else:
+		path[f] = {t:d}
+
+	if t in path:
+		path[t][f] = d
+	else:
+		path[t] = {f:d}
+
+
+res = []
+for p in perm(list(path)):
+	sum = 0;
+	last = None
+	for c in p:
+		if not last:
+			last = c
+			continue
+
+		sum += path[last][c]
+		last = c
+	res.append(sum)
+
+print(min(res), max(res))