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First solution in Clear category for Pawn Brotherhood by Dr__ON
def safe_pawns(pawns: set) -> int:
from string import ascii_lowercase as letters
counter = 0
for x in pawns:
d = set()
a = letters.index(x[0]) - 1
b = letters.index(x[0]) + 1
c = int(x[1]) - 1
d.add(letters[a] + str(c))
d.add(letters[b] + str(c))
if len(pawns.intersection(d)) > 0:
counter += 1
return counter
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
print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
Sept. 12, 2018
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