"I'm not good at assessing the practicality of swindles but here's one..."
All the endgame books I know warn you of such a possibility.
It is a very practicle tool to have in your saddlebag.
Just some RHP examples from a very deep pot.
We see each position just as the Rook is being sacced for the stalemate.
infomast - scottcrockart RHP.2006
saif1980 - kenmc RHP 2006
fixli (1412) - Lizard King (1465) RHP.2010
munichmick - kgb97 RHP 2009
dtwilson - humphreysjim RHP 2010
And finally an O
L.Mai - Y.Han Canadian Open Ottawa 2007
Here is my only OTB effort where I had to win with Queen v Rook.
First as Black I faced an opening variation (by transposition) that I myself play.
The Delayed Exchange Lopez.
So in the huff I nick the QNP with my Queen and go into an endgame.
(don't try this at home.)
Endgames = dodgy days for greenpawn.
Look what I do to my Rooks when I gang up on a weak a-pawn.
I don't think you should do this to Rooks.
I am winning the ending on the Queenside but as usual screw it up.
So off to the Kingside where I decided to sac my Rook for three passed pawns.
Of course that is gloriously mis-timed but my opponent failed to take advantage of it and
We are left with my Queen v his Rook.
Looking back I appear to change plans ½ dozen times thoughout the game
but I was team captain and evey now and then the score card was being added to at my table.
This was always distracting. I hate being distracted it takes me a while to pick up
the thread of the game.
My opponent was in his last 5 minutes when I tossed the last Rook, I as always
had plenty of time. (I never lost an OTB game on time.) and recorded all the moves
so one one day. (today) you could play over it and marvel at my genius.
C. Emms - G. Chandler Bells V Dragons, Edinburgh League 1998