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First solution in Clear category for Pawn Brotherhood by Stanislaw_Szataniak
def safe_pawns(pawns):
pawns = list(pawns)
sum = 0
for a in pawns:
safe = 0
for b in pawns:
if a == b:
safe += 0
else:
if (chr(ord(a[0])) == chr(ord(b[0])+1) or chr(ord(a[0])) == chr(ord(b[0])-1)) and (int(a[1]) == int(b[1]) + 1):
safe += 1
if (safe > 0):
sum += 1
return sum
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. 16, 2016