bridge

if turtle.refuel() then
  print("Turtle refueled!")
elseif not turtle.refuel() then
  print("No fuel in first slot")
else
  print("Unexpected error refueling")
end

y = 100
cslot = 2
for i=1, y do
  turtle.select(cslot)
  turtle.forward()
  if turtle.detectDown() == True then
    turtle.digDown()
    turtle.placeDown()
   else
     turtle.placeDown()
  end
  turtle.digUp()
  turtle.dig()
  if math.fmod(i, 64) == 0 then
    cslot = cslot + 1
  end
end