diff --git a/TaskD03/run.py b/TaskD03/run.py
new file mode 100644
index 0000000..0c7d180
--- /dev/null
+++ b/TaskD03/run.py
@@ -0,0 +1,39 @@
+import re
+
+file_name: str = "simple"
+
+
+def find_dates_1900_to_1999(text):
+    # Define the regular expression pattern
+    pattern = re.compile(r".*19\d{2} r\..*", re.IGNORECASE)
+
+    # Split the text into lines
+    lines = text.split("\n")
+
+    # Use the regular expression to find lines containing dates from 1900 to 1999
+    date_lines = [
+        line for _, line in enumerate(lines, start=1) if re.match(pattern, line)
+    ]
+
+    return date_lines
+
+
+with open(file_name + ".in", "r", newline="", encoding="utf8") as file:
+    text = file.read()
+
+with open(file_name + ".exp", "r", newline="", encoding="utf8") as file:
+    expected = [line.rstrip() for line in file.readlines()]
+
+
+found_lines = find_dates_1900_to_1999(text)
+
+mistake = False
+for line in expected:
+    if line in found_lines:
+        print(f"{line}")
+    else:
+        print(f"NO: {line}")
+        mistake = True
+
+if mistake:
+    print("ERROR")