The man with only one paper copy could, at least theoretically, use scissors and send only the bits of the grid that correspond to the solution to the end game. Definitely nothing but... and coincidentally rather literally fulfils the involving ten cells instruction.
Yonks ago, a Listener required you to "erase everything". In those days, I was solving on the paper version, so only had the one copy. I resolved to send in a blank piece of paper, claiming I had successfully erased all the answers, the grid lines and numbers, the clues and the preamble. I didn't win.