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Pawn Brotherhood solution in Clear category for Pawn Brotherhood by Druggist
def safe_pawns(pawns):
safe = 0
for pawn in pawns:
col = ord(pawn[0]) - ord('a')
row = int(pawn[1])
if row == 1:
continue
if col > 0:
pos = chr(col - 1 + ord('a')) + str(row - 1)
if pos in pawns:
safe += 1
continue
if col < 7:
pos = chr(col + 1 + ord('a')) + str(row - 1)
if pos in pawns:
safe += 1
return safe
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
Nov. 26, 2016
