1...d2 2.Q:f5 #

1.Qd1 !

threat: 2.e4 +

2...f:e4 3.Qh5 #

threat: 2.e:d3

threat: 3.Qf3 #

1...c:b3 2.Bc5 !

threat: 3.Q:b3 # / Q:d3 #

2...B:c5 3.Q:b3 #

2...R:c5 3.Q:d3 #

1...d:e2 2.R:d6 + !

2...Ke4 3.Q:e2 #

2...K:d6 3.Bc5 # (model mate!)

so-called Greek Novotny (the same move is Novotny interference and a mate)