"Challenge: find a proper game (not a four-move timeout or RHPGM draw,
preferably a checkmate) where neither player ever moves his queen....and one
other where the queen has nothing to do with the mate at all and all the action is
by the minor pieces.
This one game fits both criteria. Neither Queen moves at all and the attack
finishing in mate is carried out by the other bits. 21 moves.
Redmike - Smiffy
"...Next, find one where the non-moved queen is the (only - no double check
mates as in your second example!) mating piece."
We turn to Paul Leggett for the next example.
Paul Leggett - Kevinmccaffery
RHP 2010 Game 7270419
(I'll just give the last move which was move 35.)
White checkmates with his unmoved Queen.
It is the only piece giving check and it is the only piece covering all the flight squares..
Humerous coincidence also here.
Paul has played Kevinmccaffery twice and on both occassions Paul
has checkmated him on move 35. Once with White and once with Black.
This game above and Game 7273424
Next challenge is to see if Kevinmccaffery can last more than more
35 moves v Paul.