Solution:
1.Bd5-a2 ! threat:
2.Qh1-a8 #
1...Sd2-f3
2.Qh1*f3 threat:
3.Qf3-a8 #
3.Qf3-f8 #
2...Sa5-c6
3.Qf3-f8 #
2...Sa5-b7
3.Qf3-f8 #
2...g7*h6
3.Qf3-f6 #
1...Sd2-e4
2.Qh1*e4 threat:
3.Qe4-a8 #
3.Qe4-e8 #
2...Sa5-c6
3.Qe4-e8 #
2...Sa5-b7
3.Qe4-e8 #
2...g7*h6
3.Qe4-d4 #
3.Qe4-e5 #
1...Sa5-c6
2.Qh1*c6 threat:
3.Qc6-e8 #
3.Qc6-a8 #
3.Qc6-c8 #
2...g7*h6
3.Qc6-c3 #
1...Sa5-b7
2.Qh1*b7 threat:
3.Qb7-c8 #
3.Qb7-a8 #
3.Qb7-b8 #
2...g7*h6
3.Qb7-b2 #
1...g7*h6
2.Qh1-a1 #
References:
