Not if the puzzle is an older one. There didn't used to be a distance limit.
The best way is to make a cache listing with the name "COORDS CHECK PLEASE" and put in the coords where you want to hide a cache and submit it for review with a note not to publish. Once you get an OK back then you go hide your cache.
I think this is probably the best option, although I had considered having a crack at the puzzles, although, I'm not the shapest knife in the drawer when it comes to them
I understand this rule is to avoid someone seeking the puzzle cache from inadvertantly discovering mine, and vice versa, but if they are both different cache containers, or sizes or whatever, with at least several metres separating them, or even my traditional clearly marked 'NOT PUZZLE CACHE (insert name here)" perhaps some leeway might be possible? Like most, I like my hides to be in interesting spots, not just placed in the only position available to them.