George Duke wrote on Mon, Jul 30, 2007 04:01 PM UTC:
To make Blue Queen playable game and more than thought experiment, just
stipulate Blue-painted Queen cannot capture a Pawn unless attacked by that Pawn. Invented 1950's, Blue Queen moves like mad Queen, starts at one of
the four central squares, and belongs to whichever side is currently
moving. The limited Pawn prohibition and otherwise Queen-normality should
make nice game akin to Lavieri's Promoter Chess, but Blue Queen
presumably equally helps as hurts(hey symmetry). Interesting. Finding
proliferation extremely offensive, we just file this variate here.