Ah-ha! LOL. Yeah- I completely missed that part of the puzzle. I thought each clue was telegraphing a particular move somehow (like- how you see chess moves notated - Kd2 f3, Rxg5 and such) and I was supposed to translate that into a winner/loser. Now, I see that I sort-of arrived at the same conclusion- the Black Rook being on the same row as the White King- I figured the involvement of those two like that meant clearly that Black won- if the last move of a Chess game involved the White King and a Black Rook, obviously Black won. And, he did, but only because White is mated due to the other Black Rook. I got lucky!