I think I had not understood this earlier. Now I see the conundrum.
This is a checkmate because the joker still has black queen's powers. Only after black moves the power is changed. In this case it cannot. So it is at least a stalemate. But for the reason stated above the black king is also in check.
Isn't this the same situation with having the king and joker unobstructed on the same orthogonal? This pins all rooks, queens, chancellors and so on.
@Greg,
I see why you hate the joker! And probably for similar reasons I love it!
I think I had not understood this earlier. Now I see the conundrum.
This is a checkmate because the joker still has black queen's powers. Only after black moves the power is changed. In this case it cannot. So it is at least a stalemate. But for the reason stated above the black king is also in check.
Isn't this the same situation with having the king and joker unobstructed on the same orthogonal? This pins all rooks, queens, chancellors and so on.
@Greg,
I see why you hate the joker! And probably for similar reasons I love it!