[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "1k6/1r6/2K5/Q7/8/8/8/8 w - - 0 1"]
[PlyCount "5"]
{Here White has reached the Philidor position with White to move. A queen
triangulation maneuver will return to the same position with Black to move,
resulting in the previous example.} 1. Qe5+ Ka7 (1... Ka8 2. Qa1+ {is the same}
) 2. Qa1+ Kb8 3. Qa5 {The desired Philidor with Black to move. White should be
able to force mate and/or win the rook, typically via a fork.} *