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ferfora solution in Clear category for Pawn Brotherhood by viktor.chyrkin
def safe_pawns(pawns: set) -> int:
return sum(1 for i in pawns if chr(ord(i[0]) - 1) + str(int(i[1]) - 1) in pawns or chr(ord(i[0]) + 1) + str(int(i[1]) - 1) in pawns)
if __name__ == '__main__':
# These "asserts" using only for self-checking and not necessary for auto-testing
assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6
assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1
print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
Sept. 26, 2021
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