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First solution in Clear category for Pawn Brotherhood by VitGadurek
def safe_pawns(pawns):
protected = []
answer = 0
for x in pawns:
if not x[0]=="h":
protected.append("abcdefgh"["abcdefgh".index(x[0])+1] + str(int(x[1])+1))
if not x[0]=="a":
protected.append("abcdefgh"["abcdefgh".index(x[0])-1] + str(int(x[1])+1))
for x in pawns:
if x in protected: answer+=1
return answer
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
May 27, 2015
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