First clear solution for Pawn Brotherhood by cyberqwert - python coding challenges

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First solution in Clear category for Pawn Brotherhood by cyberqwert

def safe_pawns(pawns):
    def check(x, y, off):
        return (chr(ord(x)-off) + str(int(y)-1)) in pawns
        
    return (sum([1 if check(x, y, -1) or check(x, y, 1) else 0 for x,y 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

Oct. 24, 2015

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