For a possible new category of achievement points, I nominate from plakoto "Your opponent's mother piece is pinned".

Adding this new achievement would help plakoto get more players.

In the same spirit of adding new players to a game, I also nominate for Ataxx and Assimilation the category of "win a game by a shutout", i.e. when your opponent has no pieces on the board.

Thanks in advance for your consideration.

P.S. I suspect other players can find some other reasonable new "achievements" in relatively underplayed games here at BK in order to popularize those games too.