I mean to be able to have it possible to play all variants. It wouldn't matter if a combination of choices was never picked, it would be possible to play it is all. Like I said, I don't know the particulars of computer programming, but I'd like to be able to pick and choose amongst features and rules of a game to make versions to play. My example of Extinction Janus Chess comes to mind. If the options could be checked and the game implimented through my picks, then I have a game to play with a like minded individual. This would be better than programming each and every Chess variant that is or has a following. There'd be nothing pointless about it and it would only need to be programmed once to enable all the combinations to be played instead having to make a program for each version. If something new comes up, you could add the feature to the main page and then all the others would have it automatically.