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First solution in Clear category for Pawn Brotherhood by polly
def safe_pawns(pawns):
res=0
for pawn in pawns:
if (chr(ord(pawn[0])-1) + str(int(pawn[1])-1)) in pawns:
res+=1
continue
if (chr(ord(pawn[0])+1) + str(int(pawn[1])-1)) in pawns:
res+=1
continue
return res
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
Jan. 20, 2015
