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Posers and Puzzles

Posers and Puzzles

  1. 28 Aug '06 17:46
    Is there an endgame or direct-mate with a rook triangulation, like this:

    (R=white rook; A=black king, queen, rook or bishop; x,y,z,p,q=squares)

    n. Rx-y Ap-q
    n+1. Ry-z Aq-p
    n+2. Rz-x

    Now the position is the same as before move n, but with black to move; black is in zugzwang and loses. Do you have an example of this, or can you compose one?