Position with the most (or many) distinct refutations? I'm looking for a chess position, hopefully not too contrived, in which it's Black's turn, he has several moves, but each one is refuted by a mate by White. 

I know I could take any mate-in-two problem, make White's first move and I'd be left with what I just described, but there's one more criterion: I'd like White's second (mating) move to be different for each of Black's possible moves. Or as many distinct mating moves as possible.

Believe it or not, this is for teaching calculus.
EDIT: Here is another mate-in-two problem with five legal black moves leading to five different checkmates. 

   [Event "Apprenti Sorcier, 1992"]  
   [White "ACHBAR Selim"]
   [Black "mate in two"]
   [Result "1-0"]
   [SetUp "1"]
   [FEN "8/8/1R6/2p5/8/2Bk1NRN/3P4/K6B w - - 0 1"]

   1.Rb1! (1...Ke2 2.Nfg1#)(1...Ke4 2.Nh4#)(1...Kc2 2.Ne1#)(1...Kc4 2.Ne5#)(1...c4 2.Nd4#)


All five different mating moves are done with the same piece, which is very nice.



Just to get this started; here is a mate-in-two problem with three possible black moves and three different checkmates.

  [Event "Grand Rapids Herald 1932 (643)"]
  [White "WURZBURG Otto B."]
  [Black "mate in two"]
  [Result "1-0"]
  [SetUp "1"]
  [FEN "8/Q7/2kp4/8/8/1K6/3R4/5B2 w - - 0 1"]

  1.Re2! (1...Kb5 2.Rc2#) (1...d5 2.Re6#)(1...Kd5 2.Bg2#)