tag:blogger.com,1999:blog-14600985.post5684687643517427624..comments2023-11-03T14:59:31.910+00:00Comments on The Growlery: The quick'n'dirty approach to puzzlesUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-14600985.post-57366538005450250262011-12-18T19:38:59.487+00:002011-12-18T19:38:59.487+00:00Some years back I used to do the mathematical puzz...Some years back I used to do the mathematical puzzles in PC World, and they were often amenable to programming. With a ZX81, you had to be make maximum use of pre-analysis to reduce the search space. In this case, as I said in my own analysis, you only need to look at numbers of the form 17k + 1, and that thins it out a bit.Ray Girvanhttps://www.blogger.com/profile/05556764642402680159noreply@blogger.com