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Symmetry Breaking Chess and other cosmic variants.
This is actually a gag proposal and sometimes it generates the wrong numbers of units. Don't take this variant seriously.
I decided that if a unit can be anything other than a pawn, it cannot promote.
Sometimes this notices checkmate, sometimes not. Occasionally it will move into check or lose by making an illegal move.
These are simple illustrations rather than strong opponents.
Bug reports? -- Thank you! Keep them coming!