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1-liner: Perfect Combo solution in Creative category for The Stone Wall by Stensen
stone_wall = lambda wall: sorted(enumerate(
[''.join(i).strip("0") if '0' in i else "X"*11 for i in zip(*list(filter(None, wall.splitlines())))]),
key=lambda x: (len(x[1]), x[0]))[0][0]
March 26, 2022