https://project-gc.com/qa/?qa=tag/gc Powered by Question2Answer https://project-gc.com/qa/?qa=8473/gc4d5np-checker-tb-alphabet I think that this challenge checker could be easy to do for someone who knows how to write such a program.<br /> <br /> This challenge is cool, but really long to proof trackable by trackable. (I've done it it's really long!!!) Miscellaneous https://project-gc.com/qa/?qa=8473/gc4d5np-checker-tb-alphabet Tue, 19 Jan 2016 10:23:31 +0000