diff --git a/2023/day4/main.py b/2023/day4/main.py
index fda7a3e..0b977cd 100644
--- a/2023/day4/main.py
+++ b/2023/day4/main.py
@@ -17,11 +17,21 @@ def part1(file: str):
 
 
 def part2(file: str):
+    array = []
     with open(file) as f:
         for line in f:
-            pass
+            tmp = []
+            for el in [i.split(" ") for i in line.split(":")[1].split("|")]:
+                tmp.append([int(it) for it in el if len(it) > 0])
+            array.append(tmp)
 
-    return 0
+    sets = [1 for _ in array]
+    for num_set, card in enumerate(array):
+        num_matches = len(set(card[0]) & set(card[1]))
+        for j in range(num_matches):
+            sets[num_set + 1 + j] += sets[num_set]
+
+    return sum(sets)
 
 
 if __name__ == "__main__":