答え
1.Лd3-d6 ! угроза:
2.Лd6-f6 угроза:
3.Лf6-f8 #
2...Сd7-e6
3.Лf6-f8 +
3...Сe6-g8
4.h7*g8=Ф #
4.h7*g8=Л #
4.Лf8*g8 #
1...Сd7-e8
2.Лd6-b6 цугцванг.
2...Сe8-c6
3.Лb6-b8 +
3...Сc6-e8
4.Лb8*e8 #
2...Сe8-a4
3.Лb6-b8 +
3...Сa4-e8
4.Лb8*e8 #
2...Сe8-b5
3.Лb6-b8 +
3...Сb5-e8
4.Лb8*e8 #
2...Сe8-d7
3.Лb6-b8 +
3...Сd7-e8
4.Лb8*e8 #
3...Сd7-c8
4.Лb8*c8 #
2...Сe8-h5
3.Лb6-b8 +
3...Сh5-e8
4.Лb8*e8 #
2...Сe8-g6
3.Лb6-b8 +
3...Сg6-e8
4.Лb8*e8 #
2...Сe8-f7
3.Лb6-b8 +
3...Сf7-g8
4.Лb8*g8 #
4.h7*g8=Ф #
4.h7*g8=Л #
3...Сf7-e8
4.Лb8*e8 #