White to play and mate in 4 (or Black gives up his Queen). (hard)
⇤
←
→
⇥
↺
25.Rxf6 ( 25.Rxh6+ Kxh6 26.Qg6+ Qxg6 27.hxg6+ Nh5 ) 25...Qxf6
26.Qg6+ Qxg6 ( 26...Kh8 27.Qxf6 Rgf8 28.Qxh6+ Kg8 29.Qg6 Kh8 30.f6 Nf5 31.exf5 Rf7 32.Qxf7 Re1+ 33.Nd1 Rg1 34.Rh1 Rg3 35.Re1 a5 36.Re7 b5 37.Qh7# )
27.hxg6+ Kh8
28.Rxh6#
1-0