DAN+, Different Queens
If one side uses the ordinary chess Queen, and the other side uses a
piece that moves and captures either as Rook or as Knight, the game
should be very even.
This has not yet been tested between strong human players,
but I feel confident about it.
Of course, this can be combined with the use of different Augmented
Knights, or with any of the other piece substitutions discussed
Here's Another One.
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