Thematic try :

1. Bf4 ?  Threat  2. Re3 !

1......... Rg5 !! and no mate in 4.

e.g : 2. Rd3 Rd5 ! 3. Rxd5 cxd5 4. Rf7(Bd6) Kd8 5. Bd6(Rf7) Ke8(c8) 6. Rf8 #

1..........Rh6 ?  2. Rc7+ !  Kd8  3. Nb7+  Ke8  4. Bxh6  ~  5. Re3 #

1..........Re6 ?  2; Rd3 !  Re3+  3. Rxe3 ! ( 3. Bxe3 ?  Rb8 !! and mate in 5 ) 3....Rd8  and mate in 2.

1. Re3 !  Threat  2. Re8 #

  A) 1......... Rd6 !

2. Re8+ !

2. Ree7 ?  Rd3+ !  3. Nxd3  Rb8 ! ( 3..... Ra6 ?  4. Bg5 !  Kd8  5. Rb8 # ) 4. Rec7+ Kd8

5. Bg5+  Ke8  6. Rxb8 #

2......... Rd8

3. Bf4 !!  Threat  4. Rc7+  Kb8  5. Rxd8 #

3......... Rxe8 !

4. Rc7+  Kd8(b8)

      5. Nb7(d7) #

 Model echo mates with self block by a R on e8 and block by the other one on a flight square on a8

  B) 1........ Rg8 !

2. Ree7   Rh8 (f8)

3. Rec7+ !

3. Rbc7+ ?  Kb8 !  4. ?

      3........ Kd8

4. Ne6+ !

4. Bg5+ ? Ke8 ! and mate in 2

4........ Ke8

5. Re7 #