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First solution in Clear category for Pawn Brotherhood by jacekgrycza
def safe_pawns(pawns):
k=0
for i in pawns:
for j in pawns:
if( ( j[0]==chr(ord(i[0])-1) or j[0]==chr(ord(i[0])+1)) and int(j[1])==int(i[1])-1 ):
k=k+1
print(i, j,)
break
print (k)
return k
safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"})
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
Oct. 19, 2016