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H. G. Muller wrote on Sun, May 29, 2022 06:19 PM UTC in reply to Kevin Pacey from Sat May 28 11:37 PM:

The Checkmating Applet cannot do bent riders like Osprey. But it can do a truncated leaping version, like DC. And a pair of these does have mating potential, on 10x10. In the theory of 3-vs-1 mates discussed on the Applet page the Osprey would classify as 'potent', since it can switch its attack from c1 to a1 in a singly move (e.g. f2-f4 or f2-d2). This means it can execute mates in combination with almost anything else that is not bound to the same color.

In fact an Osprey can drive a bare King into a corner together with almost anything on any size board: positioned on an edge it can dynamically confine a King in a corner with the help of its own King. With moves to spare, which can be used to invoke the additional piece.


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