8/3b2KP/8/2R5/8/5R2/pk6/7r w - - 0 1
After Alena's 5 moves it seems like 6. Ka7+ leads to winning the B quickly, e.g.
Then you need to figure out how to do that before black can get the pieces coordinated with the king. This is actually heart of the puzzle.
I think white must give checks to the king to win one of the black pieces eventually.
Alena, what do you think the minimum white has to do in that particular position after move 5 to get a winning position?
It was easy for me to find five moves. Unfortunately I don't know queen vs rook and bishop endings at all. I opened 'Fundamental chess endings'and I couldn't find any information there either.
Yancey, could you tell me where I could find some useful information about the ending, please? I would like to understand it.