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First solution in Clear category for Pawn Brotherhood by iwak
def safe_pawns(pawns):
safe = 0
map = ["","1","2","3","4","5","6","7","8","9",
"","a","b","c","d","e","f","g","h",""]
for x in pawns:
check=[]
for y in x:
check.append(map[map.index(y)-1])
check.append(map[map.index(y)+1])
finder = [check[0]+check[2],check[1]+check[2]]
add=0
for z in finder:
if z in pawns:
add=1
safe+=add
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
Sept. 26, 2016