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Pawn Brotherhood solution in Clear category for Pawn Brotherhood by MatusGerman
def safe_pawns(pawns):
safe=0
for x,y in pawns:
if(chr(ord(x)-1)+str(int(y)-1) in pawns) or (chr(ord(x)+1)+str(int(y)-1) 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. 15, 2015