diff --git a/2017-python/solutions/day_23.py b/2017-python/solutions/day_23.py
new file mode 100644
index 0000000..f7c46cd
--- /dev/null
+++ b/2017-python/solutions/day_23.py
@@ -0,0 +1,138 @@
+from solutions import BaseSolution
+from collections import defaultdict
+
+
+class Solution(BaseSolution):
+    input_file = "23.txt"
+    sound_freq = 0
+    queue = [], []
+    sent = [0, 0]
+
+    def __str__(self):
+        return "Day 23: Coprocessor Conflagration"
+
+    def solve(self, puzzle_input):
+        R = defaultdict(int)
+        P = puzzle_input.splitlines()
+        i = 0
+        M = 0
+        while i < len(P):
+            j = 1
+            w, r, v = P[i].split()
+            match w:
+                case "set":
+                    R[r] = R[v] if v in "abcdefgh" else int(v)
+                case "sub":
+                    R[r] -= R[v] if v in "abcdefgh" else int(v)
+                case "mul":
+                    M += 1
+                    R[r] *= R[v] if v in "abcdefgh" else int(v)
+                case "jnz":
+                    x = R[r] if r in "abcdefgh" else int(r)
+                    if x != 0:
+                        j = R[v] if v in "abcdefgh" else int(v)
+            i += j
+        return M
+
+    def solve_again(self, puzzle_input):
+        def isprime(num):
+            for n in range(2, int(num**0.5) + 1):
+                if num % n == 0:
+                    return False
+            return True
+
+        b = 99 * 100 + 100_000
+        c = b + 17_000 + 1
+
+        return sum(not isprime(n) for n in range(b, c, 17))
+
+    def python_reconstruction(self, puzzle_input):
+        R = defaultdict(int)
+        R["a"] = 1
+
+        # 00: set b 99
+        R["b"] = 99
+        # 01: set c b
+        R["c"] = R["b"]
+
+        # 02: jnz a 2
+        if R["a"] == 0:
+            # 03: jnz 1 5
+            pass
+        else:
+            # 04: mul b 100
+            # 05: sub b -100000
+            R["b"] = R["b"] * 100 + 100_000
+
+            # 06: set c b
+            # 07: sub c -17000
+            R["c"] = R["b"] + 17_000
+
+        while True:
+            # 08: set f 1
+            # 09: set d 2
+            R["f"] = 1
+            R["d"] = 2
+
+            while True:
+                # 10: set e 2
+                R["e"] = 2
+
+                while True:
+                    # 11: set g d
+                    # 12: mul g e
+                    # 13: sub g b
+                    R["g"] = R["d"] * R["e"] - R["b"]
+
+                    # 14: jnz g 2
+                    if R["g"] == 0:
+                        # 15: set f 0
+                        R["f"] = 0
+
+                    # 16: sub e -1
+                    R["e"] += 1
+
+                    # 17: set g e
+                    # 18: sub g b
+                    R["g"] = R["e"] - R["b"]
+
+                    # 19: jnz g -8
+                    if R["g"] == 0:
+                        break
+
+                # 20: sub d -1
+                R["d"] += 1
+
+                # 21: set g d
+                # 22: sub g b
+                R["g"] = R["d"] - R["b"]
+
+                # 23: jnz g -13
+                if R["g"] == 0:
+                    break
+
+            # 24: jnz f 2
+            if R["f"] == 0:
+                # 25: sub h -1
+                R["h"] += 1
+
+            # 26: set g b
+            # 27: sub g c
+            R["g"] = R["b"] - R["c"]
+
+            # 28: jnz g 2
+            if R["g"] == 0:
+                # 29: jnz 1 3
+                break
+            else:
+                # 30: sub b -17
+                R["b"] += 17
+
+            # 31: jnz 1 -23
+
+        return R["h"]
+
+
+if __name__ == "__main__":
+    solution = Solution()
+    solution.show_results()