diff --git a/2023/04/main.py b/2023/04/main.py
new file mode 100644
index 0000000..e4e87fb
--- /dev/null
+++ b/2023/04/main.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8; py-indent-offset: 4 -*-
+
+# Author: Sebastian Mark
+# CC-BY-SA (https://creativecommons.org/licenses/by-sa/4.0/deed.de)
+
+# pylint: disable=missing-module-docstring,missing-function-docstring,consider-using-f-string
+
+
+def readinput():
+    cards = {}
+    with open("input", "r", encoding="utf-8") as file:
+        i = 1
+        for line in file.readlines():
+            line = line.split(":")[1]
+            winners = line.strip("\n").split("|")[0].split()
+            mine = line.strip("\n").split("|")[1].split()
+            cards[i] = {"winners": winners, "mine": mine}
+            i += 1
+    return cards
+
+
+def main():
+    cards = readinput()
+
+    # part 1
+    win_total = 0
+    for _, numbers in cards.items():
+        cardwin = len(set(numbers["winners"]) & set(numbers["mine"]))
+        win_total += int(2 ** (cardwin - 1))
+    print("Scratchpad worth %d points" % win_total)
+
+
+if __name__ == "__main__":
+    main()