Solution
1...Крa7 2.Ф:b7#
1.С:b7+??
1...Крa7 2.Сc8#/Кc8#
но 1...Крa5!
1.Кc4?? (2.Ф:b7#/Фb6#/Фa5#)
1...Крa7 2.Ф:b7#
1...Сc6 2.Фb6#/Фa5#
1...Ф:c8 2.Фb6#
но 1...С:c4!
1.Кd7?? (2.Фb6#)
1...Крa7 2.Ф:b7#
1...Ф:c8 2.Кc5#
но 1...С:d7!
1.Кa4?? (2.Фb6#)
1...Крa7 2.Ф:b7#
1...Ф:c8 2.Кc5#
но 1...С:a4!
1.Кa8?? (2.Фb6#)
1...Крa7 2.Ф:b7#
но 1...Ф:c8!
1.Кd5! (2.Фb6#)
1...Крa7 2.Ф:b7#
1...Ф:c8 2.Кb4#