The main theme: both kings have to hide behind the black c-pawn in the mainline and thematic try.
1.f7!
[1.Rh1+!?
Interestingly looks an attack to black king by rook: but this is only a wrong try. 1...Kg3
(after moves Kg4 and Kg5 will be same play ) 2.f7
and here black should play very accurately - 2...Sg6!
(2...e2!?
in case, Black will play than play leads to interesting thematic line - 3.f8Q
e1Q
4.Rg1+!!
Qxg1
(4...Kh2
5.Rxe1
dxe1Q
6.Qf4+
Kh3
7.Qxc4
Sd5+
8.Kf7
Qe7+
9.Kg6
Qf6+
10.Kh7=
) 5.Qg7+
Kh2
6.Qh6+!
(6.Qh8+?
Kg2!
7.Qg7+
Kh1!!
8.Qh7+
Qh2-+
) 6...Kg2
7.Qxd2+
Kf3
(7...Qf2
8.Qg5+
Qg3
9.Qd2+
Kh3
10.Qh6+
Kg2
11.Qd2+
positional draw) 8.Qc3+
Qe3
9.Qxc4
Sd5+
(9...Sf5+
10.Kd7!!
Qe7+
11.Kc6=
) 10.Kf7!
Qe7+
11.Kg6
Qf6+
12.Kh7=
) 3.Rg1+
Kh2
4.Rxg6
e2
5.Rh6+
Kg3
6.Rg6+
Kh3!!
(6...Kh4!?
7.f8Q
and play leads to main thematic line) 7.Rh6+
Kg4
8.Rg6+
(8.f8Q
e1Q+
9.Kd8
d1Q+
10.Kc8
Qe4
11.Qg8+
Kf3-+
) 8...Kh5!
9.f8Q
e1Q+
10.Kf7
Qf1+
11.Rf6
d1Q-+
12.Qh6+
Kg4
13.Qg7+
Kh3
14.Qh6+
Kg2
15.Qg5+
Kh2
16.Qh4+
Qh3
17.Rf2+
Kg1
18.Qxh3
Qd5+-+
Gyarmati] 1...Sg6
2.Rxg6!!
[2.Rh1+!?
Kg3
3.Rg1+
Kh2
4.Rxg6
e2
5.Rh6+
Kg3
6.Rg6+
Kh3!!
7.Rh6+
Kg4
8.Rg6+
Kh5!-+
see try] 2...e2
3.f8Q
e1Q+!
4.Kd8
(Kc7) 4...d1Q+!
5.Kc8!!
(the white King hides behind of black c-pawn) 5...Qee2
[5...Qe5
6.Qf2+!
Kh5
7.Qf7!!
Qg4+
8.Rxg4+=
] 6.Qf6+!
[6.Qh8+?
Qh5
7.Qf6+
Kh3-+
8.Rh6
Qxh6
9.Qxh6+-+
] 6...Kh3
7.Kc7!!
again the white King hides behind of the black c-pawn [7.Rh6+?!
Thematic try 7...Kg3!
(7...Kg2!?
8.Rg6+
Kh3
9.Kc7!!=
see main line) 8.Qh4+
Kf3
9.Qh3+
Ke4
10.Re6+
Kd5
11.Qf5+
Kd4
12.Qf6+
(12.Rd6+
Kc3
13.Qa5+
Kb2
14.Rxd1
Qxd1-+
Gyarmati) 12...Kd3!
13.Qf5+
Kd2!
(13...Kc3!?
14.Qa5+
Kb2
15.Qb4+
Kc1
16.Qc3+
Qec2
17.Qa1+
Kd2
18.Qa5+
Kd3
19.Rd6+
Ke4
20.Re6+
Kf3
21.Qh5+
Kg3
22.Qe5+
Kg4
23.Qg7+
Kf3
24.Qf6+
Kg3
25.Qe5+
positional draw.) 14.Qa5+
c3!
(14...Kc2!?
15.Qa2+
Kd3
16.Qa3+
c3
17.Rd6+=
) 15.Qg5+
Kc2!!-+
now, the Black King hides behind of the black c-pawn such in main line (see the moves Kc8!!, Kc7!!)] 7...Qh2+
main B [7...Qd5
main A 8.Rh6+
Kg3
9.Rg6+!
(9.Qh4+!?
Thematic try 9...Kf3
10.Qf6+
Ke4
11.Qg6+
Kd4
12.Qg1+
thematic move of bK 12...Kc3!
13.Qc1+
Qc2
14.Rh3+
(14.Qa3+
Kd4
15.Rh4+
Qce4
16.Rxe4+
Gyarmati) 14...Qdd3
15.Qa3+
Qb3-+
) 9...Kh3
10.Rh6+
Kg2
11.Rg6+
positional draw] 8.Kc8!!
(same action as in move 5.Kc8, 7.Kc7) 8...Qg3
9.Rxg3+
[9.Rh6+!?
Kg2
10.Qb2+
Kf3!
(10...Kg1!?
11.Qb6+
Qf2
12.Qg6+
Qg2
13.Qb6+
Kf1
14.Rf6+
Qdf3
15.Qb1+
Kf2
16.Qb2+!
Ke1
17.Qc1+=
) 11.Qc3+
Qd3-+
] 9...Kxg3
10.Qe5+!
draw. (EGTB) [10.Qg5+!?
Qg4+-+
; 10.Qc3+!?
Qd3-+
]