1.Sc5-e4 ! threat: 2.Qf8-c5 +
2...Kb5-a4 3.Se4-c3 #
2...Kb5-a6 3.Qc5-b6 #
1...Kb5-a4 2.Se4-c3 +
2...Ka4-a5 3.Qf8-a3 #
1...Kb5-a6 2.Qf8-a3 +
2...Ka6-b5 3.Se4-d6 #
1...Kb5-a5 2.Qf8-a3 +
2...Ka5-b5 3.Se4-d6 #
1...Sa7-c8 2.Qf8-a3 {zugzwang}
2...Kb5-c4 3.Qa3-c5 #
2...Sc8-a7 3.Se4-d6 #
2...Sc8-b6 3.Se4-d6 #
2...Sc8-d6 3.Se4*d6 #
2...Sc8-e7 3.Se4-d6 #