Non-thematic: 
1. Sd6+? Kd3!/Kd4! 1. Kg4? (2. Lg6#) Lf3+!
1. Dd6? (2. De5+ Kd3 3. Dc3+ Ke4 4. Dc4#) Lb8!
1. Lg6+? Kf3 2. Dd5+ Kf2...

Set: 1. - Tg8+? 2. fxg8~ #3

Thematic try:
1. Df5+? Kd4 2. Lg6 (3. Dd3#) Le4? 3. Dxe4#
However: 2. - Kc4! 3. Dd3+ Kxb4!

That alternative is being cancelled by: 

1. c7! threatening (2. Dc6+! Kd3/Kd4 3. Dc3+ Ke4/Kd5
4. Dc4#/Dd3+ Ke6 5. Dd6#)
1. - axb4 (2. - K~ 3. - bxc3!)
Thanks to Fernblock b4 2. Df5+ 3. Lg6 seems obvious;
3. - Kc4(?) 4. Dd3#, however, due to key-move:
3. - Lxb7!! (4. - Kc5!)
To master this, White comes up with a 'heroic' idea:  
2. Sc5+(!) "Kraft-Masse-Transformation", active self-sacrifice on the point to be guarded / aktives Selbstopfer auf dem Punkt der Deckungspflicht
2. - bxc5
Now it counts / Jetzt gilt es!
3. Df5+ Kd4
4. Lg6 (5. Dd3#) c4, instead of - Lxb7
And:
5. De5#! 4. - Le4 5. Dxe4#

Thriller about three coherent blocks.

Uncommonly progressive use of Kraft-Masse-Transformation: advanced, Pc5 is blocking again!
First threat over full distance, mobile black king, Dresden defence, temptations.

Sub-ordinated:
1. - Tc1? 2. Lxe2! multiple threats, leaving only revange checks, #5, s. set.