I’ve just documented a very simple variant of Go that some of you may want to try on OGS (as no particular server support is required): Balaur Go Variant at Sensei's Library
With little imagination is a dragon battle.
Not sure if already covered by other variants - no time to do the due diligence.
Feel free to try and comment.
Also it would be great to leave here some links to your Balaur Go games if you try it.