1. Rxd5!+
Now the black king has to come even nearer to the center of the
board. You know that a king doesn't feel very well there as long as
there are so many pieces around.
1. ... Kxd5
I don't think that black has any chances after 1. ... Kc6 2. Qxe6+.
2. Rd1+ Kc6
(see next diagram)
2. ... Ke5 doesn't help, because white continues 3. Bf4+ Nxf4 4. Qxc7+.
a
b
c
d
e
f
g
h
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
a
b
c
d
e
f
g
h
3. Qf3+!
White should not allow black to escape by playing 3. Qxe6+. Black
can answer 4. Rd6 and simply is an exchange up.
3. ... Kb5
The only move.
4. Qe2+ Qc4 5. a4+
(see next diagram)
a
b
c
d
e
f
g
h
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
a
b
c
d
e
f
g
h
1 - 0
There is nothing more to say. This is just enother example of a king
trying to achieve too much in the middle of the board.