diff --git a/python/oct3/level3/bowlingScore.py b/python/oct3/level3/bowlingScore.py
new file mode 100644
--- /dev/null
+++ b/python/oct3/level3/bowlingScore.py
@@ -0,0 +1,44 @@
+from typing import List
+
+
+def bowlingScore(frames: List[int]) -> int:
+    """Calculate the total score of a bowling game."""
+    scores: List[int] = []
+    next_frame = 0
+    for i in range(10):
+        frame_score = 0
+        if frames[next_frame] == 10:
+            frame_score += 10
+            if i < 10:
+                frame_score += frames[next_frame + 1]
+                if frames[i + 1] == 10:
+                    frame_score += frames[next_frame + 2]
+                else:
+                    frame_score += frames[next_frame + 2]
+            next_frame += 1
+        elif frames[next_frame] + frames[next_frame + 1] == 10:
+            frame_score += 10
+            frame_score += frames[next_frame + 2]
+            next_frame += 2
+        else:
+            frame_score += frames[next_frame] + frames[next_frame + 1]
+            next_frame += 2
+        scores.append(frame_score)
+    return sum(scores)
+
+
+print("Testing bowlingScore()...", end="")
+assert bowlingScore([10] * 12) == 300
+assert bowlingScore([7, 2, 8, 2, 10, 7, 1, 8, 2, 7, 3, 10, 10, 5, 4, 8, 2, 7]) == 162
+assert bowlingScore([2, 6, 2, 6, 9, 1, 10, 10, 10, 5, 1, 4, 5, 9, 0, 8, 1]) == 140
+assert (
+    bowlingScore([6, 4, 2, 7, 8, 1, 2, 4, 6, 3, 10, 6, 2, 1, 9, 6, 4, 10, 10, 10])
+    == 137
+)
+assert bowlingScore([8, 1, 5, 3, 4, 3, 0, 8, 9, 0, 8, 1, 3, 6, 1, 8, 5, 4, 7, 1]) == 85
+
+# Finally, verify that the function is non-mutating
+L = [7, 2, 8, 2, 10, 7, 1, 8, 2, 7, 3, 10, 10, 5, 4, 8, 2, 7]
+bowlingScore(L)
+assert L == [7, 2, 8, 2, 10, 7, 1, 8, 2, 7, 3, 10, 10, 5, 4, 8, 2, 7]
+print("Passed!")
diff --git a/python/oct3/level3/solvesCryptarithm.py b/python/oct3/level3/solvesCryptarithm.py
new file mode 100644
--- /dev/null
+++ b/python/oct3/level3/solvesCryptarithm.py
@@ -0,0 +1,45 @@
+def solvesCryptarithm(puzzle: str, solution: str) -> bool:
+    """Check if a cryptarithm puzzle is solved correctly.
+
+    Args:
+        puzzle (str): The cryptarithm puzzle.
+        solution (str): The solution to the puzzle.
+
+    Returns:
+        bool: True if the puzzle is solved correctly, False otherwise.
+    """
+    left = puzzle.split(" + ")[0].strip()
+    right = puzzle.split(" + ")[1].split(" = ")[0].strip()
+    result = puzzle.split(" + ")[1].split(" = ")[1].strip()
+    scores = list(solution)
+    for score, letter in enumerate(scores):
+        print(score, letter)
+        left = left.replace(letter, str(score))
+        right = right.replace(letter, str(score))
+        result = result.replace(letter, str(score))
+    print(left, right, result)
+    try:
+        return int(left) + int(right) == int(result)
+    except ValueError:
+        return False
+
+
+print("Testing solvesCryptarithm()...", end="")
+#                         9567 + 1085 = 10652
+assert solvesCryptarithm("SEND + MORE = MONEY", "OMY--ENDRS") == True
+
+#                         201689 + 201689 = 403378
+assert solvesCryptarithm("NUMBER + NUMBER = PUZZLE", "UMNZP-BLER") == True
+
+#                         91542 + 3077542 = 3169084
+assert solvesCryptarithm("TILES + PUZZLES = PICTURE", "UISPELCZRT") == True
+
+#                         8456 + 1074 = 10542 (False)
+assert solvesCryptarithm("SEND + MORE = MONEY", "OMY-ENDRS") == False
+
+#                         9567 + 1085 = 1062 (False)
+assert solvesCryptarithm("SEND + MORE = MONY", "OMY--ENDRS") == False
+
+#                         No S in solution
+assert solvesCryptarithm("SEND + MORE = MONEY", "OMY--ENDR-") == False
+print("Passed!")
diff --git a/python/oct3/level3/topScorer.py b/python/oct3/level3/topScorer.py
new file mode 100644
--- /dev/null
+++ b/python/oct3/level3/topScorer.py
@@ -0,0 +1,52 @@
+from typing import List, Tuple
+
+
+def topScorer(data: str) -> str | None:
+    """Return the name(s) of the student(s) with the highest total score."""
+    lines = [line for line in map(lambda line: line.strip(), data.split("\n")) if line]
+    max_score: List[Tuple[str, int]] = []
+    for line in lines:
+        name, *scores = line.split(",")
+        scores = list(map(int, scores))
+        if not scores:
+            max_score.append((name, 0))
+        else:
+            max_score.append((name, sum(scores)))
+    max_score.sort(key=lambda x: x[1], reverse=True)
+    if not max_score:
+        return None
+    names = [name for name, score in max_score if score == max_score[0][1]]
+    return ",".join(names)
+
+
+print("Testing topScorer()...", end="")
+data = """\
+Joe,10,20,30,40
+Lauren,10,20,30
+Ben,10,20,30,5
+"""
+assert topScorer(data) == "Joe"
+
+data = """\
+David,11,20,30
+Austin,10,20,30,1
+Lauren,50
+"""
+assert topScorer(data) == "David,Austin"
+
+data = """\
+Ping-Ya,100,80,90
+"""
+assert topScorer(data) == "Ping-Ya"
+
+data = """\
+Reyna,20,40,40
+Ema,5,5,5,5,10
+Ketandu,50,20,10,20
+Tanya,80,20
+Kate,70
+"""
+assert topScorer(data) == "Reyna,Ketandu,Tanya"
+
+assert topScorer("") == None
+print("Passed!")