1...	Qg3!
The queen must be taken, otherwise 2... Qxh2! 3.Kxh2 hxg2+ 4.Kg1 Rh1#
2.hxg3	hxg2+
3.Kg1
If 3.Kxg2 Rxg3#
3...	Rh1+
4.Kxg2	Rgh8
5.gxf4	exf4
And White resigned
Bleule-Wegener (1956)