diff --git a/AoC_2025/Day05.cs b/AoC_2025/Day05.cs
index c7f3afb..df3e31b 100644
--- a/AoC_2025/Day05.cs
+++ b/AoC_2025/Day05.cs
@@ -35,11 +35,15 @@ public class Day05 : IPuzzleSolver<long>
         var sumIds = SumIdsInRanges(freshIdRanges);
         return sumIds;
     }
-
-    private IEnumerable<long> FilterFreshIds(IEnumerable<long> ids, Range[] freshIdRanges)
+    
+    public long SolvePart2Again(string pathToPuzzleInput)
     {
-        var freshIds = ids.Where(id => IsIdInRanges(id, freshIdRanges));
-        return freshIds;
+        var database = ParsePuzzleInput(pathToPuzzleInput);
+        var freshIdRanges = ParseRanges(database.freshIdRanges);
+        var combinedRanges = CombineOverlappingRanges(freshIdRanges);
+        var countIdsInRanges = CountIdsInRanges(combinedRanges);
+        var sumIds = countIdsInRanges.Sum();
+        return sumIds;
     }
 
     private IEnumerable<long> ParseIds(List<string> ids)
@@ -59,6 +63,12 @@ public class Day05 : IPuzzleSolver<long>
         .ThenBy(range => range.Item2)
         .ToArray();
     }
+    
+    private IEnumerable<long> FilterFreshIds(IEnumerable<long> ids, Range[] freshIdRanges)
+    {
+        var freshIds = ids.Where(id => IsIdInRanges(id, freshIdRanges));
+        return freshIds;
+    }
 
     private bool IsIdInRanges(long id, IEnumerable<Range> ranges)
     {
@@ -83,4 +93,29 @@ public class Day05 : IPuzzleSolver<long>
 
         return sumFreshIds;
     }
+
+    private List<Range> CombineOverlappingRanges(Range[] ranges)
+    {
+        var optimizedRanges = new List<Range>(ranges.Length) { ranges[0] };
+        foreach (var range in ranges)
+        {
+            var lastRange = optimizedRanges[^1];
+            if (range.from > lastRange.to)
+            {
+                optimizedRanges.Add(range);
+            }
+            else if (IsIdInRange(range.from, lastRange) && ! IsIdInRange(range.to, lastRange))
+            {
+                optimizedRanges[^1] = (lastRange.from, range.to);
+            }
+        }
+
+        return optimizedRanges;
+    }
+    
+    private static IEnumerable<long> CountIdsInRanges(List<Range> combinedRanges)
+    {
+        var countIdsInRanges = combinedRanges.Select(range => range.to - range.from + 1);
+        return countIdsInRanges;
+    }
 }
\ No newline at end of file