[Retros] (no subject)

[doubleexclam at comcast.net]

"Problem.
Create a position (White to move) with all castling rights (1111=KQkq), where 
after White's move all castling right will be lost (0000).

Yefim 10/23/2007"

r3k2r/8/3Q4/6p1/1p5b/1Pp4p/B1P2N1P/RB2K1BR w

1.Qe7+

Technically, it takes two half-moves to lose all the castling rights, even though the loss is inevitable after White's move.

-Ryan M.