Here is another example of the solution that can't be found.
Washington Post (DC)
* * * 2 * 9 * 8 *
6 * * * * * 1 * *
* 4 * * 6 3 * * *
I tried 29861 which should be the correct code, and it doesn't work. This has worked in the past. On thing I have noticed is the paper does not put the puzzle number on the bottom or the difficulty.