ShaftminerV2

function SideMine()
  turtle.dig()
  if turtle.forward() then
    else
     turtle.dig()
      turtle.forward()
end
end
function mine()
  turtle.dig()
   if turtle.forward() then
    turtle.digDown()
     else
      turtle.dig()
       turtle.forward()
        turtle.digDown()
    end
end
print "Booting up Shaftminer V2"
sleep(1)
print "How many blocks down would you like me to dig?"
d = read()
for i=1,d,1 do
 turtle.dig()
  turtle.digDown()
   turtle.down()
    turtle.select(1)
     turtle.place()
end
print "Mineshaft done. Shuting down. Bye"
print "Decent finished. Mineshaft iniciating"
turtle.turnRight()
turtle.turnRight()
turtle.up()
for i=1,20,1 do
  mine()
   mine()
    mine()
    turtle.turnRight()
     SideMine()
      SideMine()
       SideMine()
        turtle.turnRight()
         turtle.turnRight()
          turtle.forward()
           turtle.forward()
            turtle.forward()
             turtle.forward()
              SideMine()
               SideMine()
                SideMine()
                 turtle.turnRight()
                  turtle.turnRight()
                   turtle.forward()
                    turtle.forward()
                     turtle.forward()
                      turtle.turnLeft()
end
print "Mineshaft done. Shaftminer V2 is shutting down"