I like this puzzle. To set it up, imagine an n-by-n grid. Starting with a single site occupied, the currently occupied sites are duplicated, translated and dropped onto vacant sites. This move is legit if the copies stay within the board and there is no overlapping with the originals. It’s possible to fill the 8-by-8 board in this way as you can see above. Now for the puzzle, it’s also possible to cover 32/49 sites of 7-by-7 board in five moves. But how? I’ll show a solution in a few days.