--Local
local miningError = 0 -- 0 = no error, 1 = error
local torch = turtle.getItemCount(1)

--Check
local function Check()
	if torch == 0 then
                print("Missing torches in slot 1")
                Error = 1
	else
			print("Torches detected")

	end
end

-- Recheck
local function Recheck()
        torch = turtle.getItemCount(1)
        Error = 0
end

--Dig
local function DigUpDown()
	turtle.digUp()
	turtle.digDown()
end

--Forward
local function Forward()
	turtle.dig()
	turtle.forward()
end

--TurnLeft
local function TurnLeft()
	turtle.turnLeft()
end

--TurnRight
local function TurnRight()
	turtle.turnRight()
end

--Down
local function Down()
	turtle.down()
end

--3x3
local function ThreeXThree()
	Forward()
	DigUpDown()
	TurnLeft()
	Forward()
	DigUpDown()
	TurnRight()
	TurnRight()
	Forward()
	Forward()
	DigUpDown()
	TurnLeft()
	TurnLeft()
	Forward()
	TurnRight()
end

-- Start
local function Start()
	ThreeXThree()
	ThreeXThree()
	Down()
end

-- Main
print("Welcome to stairs program place turtle in the bottom middle tile")
sleep(2)
print("Place torches in slot 1 and fuel in any other slot")
sleep(5)
print("How deep do you want to go ?")
input = io.read()
turtle.refuel()
Check()
if Error == 1 then
	repeat
		sleep(10)
		Recheck()
		Check()
	until Error == 0
end

if input > 0 then
	repeat
		Start()
		input = input - 1
	until input == 0
end