At least 3 different mating moves are made on the same square.
See also: Play on the same square.
Marcel Tribowski
harmonie, 1992
1st Prize
1.Ke3
Bxc4
2.Rf1
Se6
3.Rf3
Re2#
1.Qf4
Sf5
2.Kf3
Rh2
3.Be4
Be2#
1.Sd3
Rg3
2.Se5
Bd3+
3.Kf4
Se2#