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Fairy-Max: an AI for playing user-defined Chess variants. A chess engine configurable for playing a wide variety of chess variants.[All Comments] [Add Comment or Rating]
H. G. Muller wrote on 2021-06-22 UTC

You mean the examples given for the various pieces? These are indeed still given in the original system (which still is the internal representation), that didn't have the possibility to optionally specify a secondary step vector.

With B2-then-R you mean a piece that slides on a trajectory that starts with (exactly) 2 diagonal steps, and then continues orthogonally after a 45-degree bend? This would be nearly the same as Griffon, except that you would have to specify a delay of 1 step before the move switches from primary to secondary leg. E.g. for one of the trajectories the Griffon would use 15,3,1, and the corresponding trajectory of the B2-then-R would be 15,403,1. The 4 there specifies a delay of 1 step, and the 0 that there is no change in rights between the first and second leg. (Both are mc.)

Note that to avoid duplicat generation of the F moves, you could specify the other trajectory that starts with the same step without any rights in the first leg, like 15,30,16 for Griffon. This has 0 for primary rights (= cannot do anything), and then toggles that to 3. (I did not do that in the example.)