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diff --git a/day6/day6.py b/day6/day6.py
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+++ b/day6/day6.py
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+"""Day 6."""
+from collections import Counter
+
+
+def score_part1(group):
+    """Determine score for group in part 1."""
+    return len(set(group.replace("\n", "")))
+
+
+def score_part2(group):
+    """Determine score for group in part 2."""
+    group_size = group.count("\n") + 1
+    counter = Counter(group.replace("\n", ""))
+    return sum(1 for _, occurences in counter.items() if occurences == group_size)
+
+
+with open("input") as f:
+    groups = f.read().rstrip().split("\n\n")
+
+# Part 1
+print(sum(map(score_part1, groups)))
+
+# Part 2
+print(sum(map(score_part2, groups)))