"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 RHP 2006
1.d4 Nf6 2.c4 c5 3.d5 b5 4.a4 bxc4 5.Nc3 d6 6.e4 Ba6 7.f4 Nbd7 8.Nf3 g6 9.e5 Nh5 10.Be2 Ng7 11.0-0 Nf5 12.e6 fxe6 13.dxe6 Nf6 14.Ng5 Nh6 15.f5 Bg7 16.Nd5 Rf8 17.Nxf6+ Rxf6 18.Nxh7 Rxf5 19.Bxh6 Bxh6 20.Rxf5 gxf5 21.Bh5
"...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
[FEN "2R5/1r1Pkppp/4p3/3p4/3P2PP/3KP3/P7/8 w - - 0 1"]
1. d8=Q
Next challenge is to see if Kevinmccaffery can last more than more
35 moves v Paul. 🙂