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First solution in Clear category for Pawn Brotherhood by Sarina
def safe_pawns(pawns: set) -> int:
pawns_indexes = set()
result = 0
for p in pawns:
row = int(p[1]) - 1
col = ord(p[0]) - 97
pawns_indexes.add((row, col))
for (row, col) in pawns_indexes:
protections_indexes = {(row-1, col-1), (row-1, col+1)}
if protections_indexes.intersection(pawns_indexes):
result += 1
return result
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!")
Dec. 9, 2019
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