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Pawn oneliner solution in Clear category for Pawn Brotherhood by hopsmdev
def safe_pawns(pawns):
return len([pawn for pawn in pawns if
chr(ord(pawn[0]) - 1) + str(int(pawn[1]) - 1) in pawns or
chr(ord(pawn[0]) + 1) + str(int(pawn[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
assert safe_pawns({"a1", "a2", "a3", "a4", "h1", "h2", "h3", "h4"}) == 0
June 9, 2016
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