OK. . . . so the appeal of the Rook exchange depended on some stupidity on the part of OB, a bad bet most days.
In other moves I had considered before issuing that invitation, there were also some pretty tortuous issues that had to be gotten just right in order for me to win, as well.
Still this last move may not have been my best move. In general principles, having a pair of mobile pieces keeps hope alive a little better, and in this case I achieved no clear path to a win, and may have given OB one.
But I have still not gone over all the contingencies, not by a long shot. All I can say right now is that I'm questioning the trade. I can give OB a chance to decline if he wishes though. . . .
So I have been conscripted into the move to the new house. . . . .
I might be until Monday night thinking about this.
OK, the issue is what moves can be forced in the ensuing game. The result of the rook trade actually depends upon the position of the surviving pieces. What I had not considered well enough is the somewhat unnatural choice of King moves OB could make to control the center. Natural enough to go chasing along with the passed pawn, but that would have lost the game, imo.
If I take OB's Rook right now, there is a way he can force things on to a victory.
So whether he sees that or not is not going to be a gamble I will take. I therefore move my King to the center of the fight.
Ke5