1.Sc7? <br /> 1...Kc8 2.Qh8+ Kd7 3.Qe8# <br />   2...Kb7 3.Qa8# <br /> 1...Kc6 2.Qe4+ Kd7 3.Qe8# <br />   2...Kc5/d5 3.Qxd5# <br />     but 1...d5! <br />   1.Qd8+? Ke6 2.Qxd6+ Kf5 3.Qf6# <br />     but 1...Kc6! <br />   1.Qh3+?/Qg4+? Ke7/Kxe8 2.Qf5 ~ 3.Qf7# <br />      but 1...Kc6! <br />   1.Qh7+? Ke6 2.Qf7+ Ke5 3.Bc3# <br />     but 1...Kc6! <br />   1.Qc4? Ke7/Kxe8 2.Qf7# <br />     but 1...d5! <br /> <br /> <b>  1.Qb4! threat (1...d5/Ke7) 2.Qxd6+ <br />   2...Kc8 3.Qc7# <br />   2...Kxe8 3.Qd8# <br /> 1...Kc6 2.Sf6 d5 3.Qb6# <br /> 1...Kc8 2.Qb5 d5 3.Sd6# <br /> 1...Kxe8 2.Qb7 d5/Kf8 3.Qf7# <br /> 1...Ke6 2.Qxd6+ Kf5 3.Qf6# <br /> </b> <br /> Star, model mates, flight giving key, passive sacrifice. <br /> <br />