Instead of Sunjang variant I implemented Random100 variant. User tournament will start soon.

[game;id:1638471;move:100]

Thank you for the new variation.

I guess the first 100 moves (50 for each player) are randomly pre-played?

Yes. I was inspired with this doc:

https://www.lri.fr/~teytaud/randomgo.pdf

Positions are selected with computer program. Only a 1-2% of random positions are selected for this variant.