There are two problems in Go that I would think might be appropriate (assuming that 9th grade == somewhere around about age 14).
The first, and the easiest to demonstrate because it's quickest, would be figuring out whether a move results in a group that is entirely surrounded and can be removed from the board.
The second, which builds on that, would be to implement a board on which two people can play, with the computer removing prisoners during play as above, but also spotting and not allowing other illegal moves such as suicide or repetition. Don't worry about the ruleset distinctions - just pick one and go with it.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
Outside of code tags, you may need to use entities for some characters:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||