1.Rd3
[1.Rh1?
c4
2.e5
c3
3.e6
Kc6
4.Kxg7
Kd6
5.Kf7
c2-+
; 1.Rb3+?
Kc4
2.Rb1
d3!
(2...Kc3?
3.e5=
) 3.Kg6
Kd4
4.Kf5
c4-+
] 1...c4
[1...Kc4
2.Rxd2
d3
3.Kxg7=
] 2.Rxd2
c3
3.Rc2
Kc4
4.e5
Kd5!
[4...d3
5.Rxc3+
Kxc3
6.e6
d2
7.e7
d1Q
8.e8Q=
] 5.Kg6!
[5.Kxg7?
Kxe5
6.Kg6
Kd5-+
] 5...Ke6
[5...Kxe5
6.Kg5
zz main] 6.Kh5!!
[Thematic try 6.Kg5?
Kxe5
zz 7.Rc1
Ke4
zz -+] 6...Kxe5
7.Kg5!
zz [7.Rc1
Kf5
(f4)-+] 7...Ke4
[7...g6
8.Rc1!
Kd5
(or also 8...Ke4
9.Kf6!
Kd3
10.Ke5=
) 9.Kf4
Kc4
10.Ke4
(f3) 10...d3
11.Ke3=
] 8.Rc1!
zz 8...Ke3
9.Kf5
Kd2
[9...g6+
10.Ke5!=
] 10.Rg1!
[Thematic try 10.Rh1?
c2
11.Ke4
Kc3!
(not 11...d3?
12.Kd4=
) 12.Rh3+
(12.Rh8
d3
13.Rc8+
Kd2-+
) 12...d3
13.Rxd3+
Kb4-+
(13...Kc4?
14.Rd8=
) ] 10...c2
11.Ke4
Kc3
12.Rxg7
d3
13.Rc7+=.