me the important question is whether this 'double Cat-Sword move' would imply Lion powers. So it would be important to know how this description compares to the wording of the description of the Lion move, from the same documents. Note that 'in two directions' could also mean 'back and forth' (so that this is a sort of Soaring Eagle sting), and that the claim that it can move in two orthogonal directions is not the same as that it must move in two directions. The phrase could just have meant 'can change direction between the steps'. From the perspective of the game, the ability to jump to the second square on the orthogonal seems almost completely useless on a piece as valuable as the Free King, in a game that is crammed with lower-valued pieces that could capture their neighbor, (if they don't simply annihilate it by igui or burn it...). So merely acquiring the Betza D move does not strike me as a sensible promotion. Having a ranging move plus a Soaring-Eagle sting along all 4 diagonals seems a much more reasonable promotion, and would also explain the name 'Free Eagle'.    

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