local i = 0
local turn = true
local h = 0

function demitour()
    local k = 0
    for k=0,1,1 do
        turtle.turnLeft()
    end
end
function poseTorche()
    if i == 10 then
        turtle.select(1)
        demitour()
        turtle.place()
        demitour()
        i = 0
    end
end
function couloir()
    if turtle.detect() == true then
        turtle.dig()
    elseif turtle.detectUp() ==  true then
        turtle.digUp()
    elseif turtle.detectDown() == false then
        turtle.select(3)
        turtle.placeDown()
    else
        turtle.forward()
        i = i + 1
        h = h + 1
    end
end
function changeCouloir()
    if turn == true then
        turtle.turnLeft()
        for k=h,h+3,1 do
            couloir()
        end
        turtle.turnLeft()
        turn = false
    elseif turn == false then
        turtle.turnRight()
        for k=h,h+3,1 do
            couloir()
        end
        turtle.turnRight()
        turn = true
    end

end

while true do

    while h <= 64 do
        couloir()
        poseTorche()
    end
    changeCouloir()
end