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H. G. Muller wrote on Sun, Nov 17, 2019 12:18 PM UTC:

Not clear from your description at http://history.chess.free.fr/metamachy.htm was:

  • Whether stalemate is a win, draw or loss.
  • What the "overpassed squares" are in case of the initial King move to the second ring. In particular whether moving like a Knight (from f1 to g3, say) passes over f2, g2, neither, either or both. And what it means for those squares to be "under attack" when they are occupied. (For D or A move it can be assumed that these are the W and F squares in the same direction, respectively.)
  • Whether the King can capture with its initial jumping moves.
  • Whether a Prince can capture en passant, in addition to being e.p.-capturable. Especially since, in the description of the Pawn, you present its ability to capture e.p. as a "consequence" of its ability to capture diagonally, rather than as an additional rule that could very well have been different. Since the Prince can also capture diagonally, does this have the same (but this time unmentioned) 'consequence'? And is this then a consequence just of being able to capture, (so that the Prince can also e.p.-capture orthogonally), or does the direction matter (and how about backward diagonal then)?

Note that my remark on the non-royal nature of the Prince is not meant as criticism on you piece naming, but just as a warning to the reader that the Metamachy type of Prince is not like the Shogi Prince (which also moves like King) in that it has to be captured / mated too in order to win the game and cannot expose itself to pseudo-legal attack. I would have said the same for Queen where it not that the Queen is an orthodox Chess piece that can move into check, and would automatically be assumed the same in other variants. Note that in your Metamachy description you use 'royal' in exactly the same meaning as I use it here, when you describe the Prince as "a non-royal King".


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