What do you guys think about these new variants: One-check chess, two-check chess, capture chess, anti-capture chess

By the way, may I ask...Is three-check as forceful as antichess or atomic? Thank you very much!

No, the more you play it, the more it seems like normal chess, white has a greater advantage but the moves are more flexible than antichess.

also, I am in the process of making a 3+ opening book if that helps...

That's cool as hell man. You are good enough to make one, too.

Thanks, except I procrastinate a lot. I'll try my best to have a preview/foreword/rules of thumb page done by the end of this week.