function place ()
  turtle.select(1)
  turtle.dig()
  turtle.place()
  turtle.up()
  turtle.select(2)
  turtle.placeDown()
  turtle.dig()
  turtle.select(3)
  turtle.place()
  turtle.select(4)
  turtle.placeUp()
end

function remove ()
  turtle.select(3)
  turtle.dig()
  turtle.select(2)
  turtle.digDown()
  turtle.down()
  turtle.select(1)
  turtle.dig()
end

function gotoNextPos (turnRight)
  if turnRight == true then
    turtle.turnRight()
  else
    turtle.turnLeft()
  end

  for i = 1,9 do
    move()
  end
  turtle.turnLeft()
end

function move ()
  if turtle.forward() == false then
    turtle.select(5)
    turtle.dig()
    if turtle.forward() == false then
      print("Unable to move, quiting....")
    else
      turtle.drop()
    end
  end
end

local args = { ... }
local quit = false

if not #args == 1 then
  print("Usage: program <times to run>")
else
  total = tonumber(args[1])
  i = 0
  while i < total do
    i = i + 1
    if quit == true then
      break
    end

    if turtle.getFuelLevel() < 200 then
      turtle.select(6)
      turtle.digUp()
      turtle.drop()
      turtle.select(5)
      turtle.placeUp()
      turtle.suckUp()
      turtle.refuel(10)
      turtle.dropUp()
      turtle.digUp()
    end

    place()

    if i > 1 then
      turtle.select(4)
      gotoNextPos(false)
      turtle.digUp()
      gotoNextPos(false)
    end

    itemsInInv = 0

    sleep(10)
    write("Waiting for quarry to finish...")
    while itemsInInv < 10 do
      turtle.select(6)
      if turtle.suck() then
        turtle.drop()
        sleep(10)
      else
        itemsInInv = itemsInInv + 1
        sleep(5)
      end
    end
    write("Detected that chest is empty")

    remove()
    if i < total then
      gotoNextPos(true)
    else
      turtle.up()
      turtle.select(4)
      turtle.dig()
      turtle.down()
    end
    print("iteration - " .. i)
  end
end