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First solution in Clear category for Pawn Brotherhood by apex123
def safe_pawns(pawns):
pawn_coords = []
safe_pawns = 0
for p in pawns:
pawn_coords.append((ord(p[0])-97, int(p[1])-1))
for coord in pawn_coords:
if (coord[0]-1, coord[1]-1) in pawn_coords or \
(coord[0]+1, coord[1]-1) in pawn_coords:
safe_pawns += 1
return safe_pawns
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
Feb. 16, 2015
