a) diagram - 1 sol
1...Kg2-f2 2.Ke4-e5 Kf2-e3 3.Qc6-f6 Ra7-a5 #
b) wSb7-->a6 - 1 sol
1...Kg2-g3 2.Ke4-d4 Kg3-f4 3.Qc6-c3 Ra7-d7 #
c) wSb7-->d5 - 2 sol
1...Ra7-a5 2.Ke4-f5 Kg2-f3 3.Qc6-f6 Sd5-e7 #
1...Ra7-d7 2.Ke4-d3 Kg2-f3 3.Qc6-c3 Sd5-b4 #