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Second2 solution in Clear category for Pawn Brotherhood by Niro_Atomic
def safe_pawns(pawns):
i=0
for coord in pawns:
left_guard=chr(ord(coord[0])-1) + chr(ord(coord[1])-1)
right_guard=chr(ord(coord[0])+1) + chr(ord(coord[1])-1)
if left_guard in pawns: i+=1
elif right_guard in pawns: i+=1
return i
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
June 3, 2015
