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First solution in Clear category for Pawn Brotherhood by lukasz.bogaczynski
def safe_pawns(pawns_positions):
safe_positions = set()
for pawn_position in pawns_positions:
column = pawn_position[0]
row = int(pawn_position[1])
if row <= 7:
if column >= 'b':
safe_position = ((chr(ord(column) - 1)) + str(row + 1))
if safe_position in pawns_positions:
safe_positions.add(safe_position)
if column <= 'g':
safe_position = ((chr(ord(column) + 1)) + str(row + 1))
if safe_position in pawns_positions:
safe_positions.add(safe_position)
return len(safe_positions)
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!")
Nov. 16, 2017
