1.Qg6? (2.f4#),

1...Nh5 2.Nh6 ~/Bc6+ 3.Nf7/Nxc6#,

1...f5 2.Qxg7+ Bf6 3.Qxf6#,1...Sf5!

1.Bb7!  (2.f4#),

1...Bc6 2.Nd3+ Kd5 3.Bxc6#,

1...d5 2.f4+ Ke4 3.Bxd5#.

Maslar theme.

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1...Nh5 2.Qxh5+  f5   3.f4#.

1...Rxf3 2.Bh2+ Rf4/Rg3 3.Bxf4/f4#.