rescue

while true do
turtle.select(1)
if turtle.compareDown() == false then
turtle.select(2)
if turtle.compareDown() then
turtle.turnRight()
turtle.turnRight()
turtle.forward()
turtle.turnRight()
end
turtle.select(3)
if turtle.compareDown() then
while turtle.detectUp() == false do
turtle.up()
end
end
if turtle.detect() == false then
turtle.forward()
else
turtle.turnLeft()
if turtle.detect() == false then
turtle.forward()
else
turtle.turnRight()
turtle.turnRight()
turtle.forward()
end
end
end
end