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First solution in Clear category for Pawn Brotherhood by Andreas_Strus
def safe_pawns(pawns):
pawns = list(pawns)
chars = ["a", "b", "c", "d", "e", "f", "g", "h"]
defended = 0
for x in pawns:
defender1 = 0
defender2 = 0
x1 = int(x[1])
if x1 > 1 and x1 <9:
x0 = x[0]
x1 = str(int(x[1]) - 1)
if (chars.index(x0) - 1) >= 0 and (chars.index(x0) - 1) < 8:
kol1 = chars[(chars.index(x0) - 1)]
defender1 = str(kol1) + str(x1)
if (chars.index(x0) + 1) >= 0 and (chars.index(x0) + 1) < 8:
kol2 = chars[(chars.index(x0) + 1)]
defender2 = str(kol2) + str(x1)
d1 = str(defender1) in pawns
d2 = str(defender2) in pawns
if d1!=0 or d2!=0:
defended = defended + 1
return defended
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. 23, 2016
