1.e7!
[1.c7?
Rg8+
(Rc1)-+] 1...Re6
2.c7
Rc1
[2...Rxe7
3.Rxe7
Rc1
4.Rd7+=
] 3.c8Q!
[3.c8R?
Rb6+
4.Ka7
(4.Ka8
Ra1#
) 4...Rxc8
5.Kxb6
Kd6-+
; 3.c8B?
Rxe7
4.Rxe7
Rc4
5.Rb7
(5.Rd7+
Kc5
6.Rh7
b3
7.Rxh5
Rb4+-+
) 5...h4
6.Rd7+
Ke4
7.Bb7+
Ke3-+
] 3...Rxc8+
4.Kxc8
e4
[4...b3
5.Kd7
Rxe7+
6.Kxe7!
(6.Rxe7?
b2-+
) 6...b2
7.Rf1=
] 5.Kd7
Rxe7+
6.Rxe7
b3
7.Re8!
zz [Thematic try 7.Re6?
h4!
(not 7...Kd4?
8.Rd6+=
) 8.Rh6
Kd4!-+
(not 8...e3?
9.Rh5+!
Kd4
10.Rxh4+
main line; not 8...Kc4?
9.Rxh4
b2
10.Rxe4+=
) ] 7...Kd4
[main 7...h4
8.Rh8
(8.Rb8?
Kc4
9.Ke6
e3-+
) 8...e3
9.Rh5+!
(9.Rxh4
b2
(e2)-+) 9...Kd4
10.Rxh4+
Kd3
11.Rb4
Kc3
12.Re4
Kd2
13.Rd4+
Kc2
14.Rc4+
Kd3
15.Rb4
the known positional draw] 8.Ke6!
e3
9.Kf5
b2
10.Rd8+
Kc4
11.Rc8+
Kd3
12.Rd8+
Kc2
13.Rc8+
Kb3
14.Rb8+
Ka2
15.Ra8+
Kb3
16.Rb8+
Kc2
17.Rc8+
positional draw.