local invslot = 1
while true do
    if turtle.detectDown() == true then
        for i=1, invslot do
            turtle.select(invslot)
            if turtle.compare == true and invslot == 1 then
                turtle.dig()
                turtle.forward()
                turtle.digUp()
                turtle.up()
                turtle.digUp()
                turtle.up()
                turtle.digUp()
                turtle.up()
                turtle.digUp()
                turtle.up()
                turtle.down()
                turtle.down()
                turtle.down()
                turtle.down()
            elseif turtle.compare == true and invslot == 2 then
                turtle.dig()
                turtle.forward()
        end
            elseif turtle.compare == false then
            while turtle.compare == false and turtle.detectDown() == true do
                turtle.forward()
                if turtle.detect() == true then
                    turtle.turnLeft()
                    turtle.forward()
                else
                    turtle.forward()
                end
            end
        end
    elseif turtle.detectDown() == false then
        turtle.back()
        turtle.turnLeft()
    end
end