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First solution in Clear category for Pawn Brotherhood by Lemur21
def safe_pawns(pawns: set) -> int:
counter = 0
for pawn in pawns:
num = str(int(pawn[1]) - 1)
if pawns & {chr(ord(pawn[0])-1)+ num, chr(ord(pawn[0])+1)+ num}:
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!")
Dec. 8, 2020