Thematic try:

1. Bd1 ? Kb5 2. Bb3 Ke5 ! 3. d4+ Kb5 4. Kh2 z Ka5 5. ?

Solution:

1. Bf7 ! Rb5

2. d4

A) 2....Ka4 !

3. Bc4 Ka3

4. Rf2 !

4. Rb6 ? h2 ! (4....Ka4 ? 5. Ra6 #) 5. ?

4....Ka4(h2)

5. Ra2 # model mates.

B) 2....h2 !

3. Bb3 !

3. Kh2 ? Ka4 ! 4. Bc4 Ka3 ! (4....Ka5 ? 5. Ra6 #) 5. ?

3....Ka5

4. Bc4 Ka4

5. Ra6 # model mate.

Model echo-mates.