1.Ra5+!
[1.Rb5+?
Kd6!
(1...Ke6?
2.Ra1
d1Q+
3.Rxd1
Rxd1+
4.Kg2
(h2)=; 1...Rd5
2.Rxd5+
Kxd5
3.Ra1
) 2.Ra6+
Kc7-+
] 1...Rd5
2.Ra1
[2.Re4+?
Kd6-+
] 2...d1Q+
3.Rxd1
Rxd1+
4.Kf2
Rd2+
[4...Rd3
5.Ke2
sooner apears the main line] 5.Ke1
Rd3
[main 5...Rb2
6.Kd1!
(6.Re4+?
Kd5
7.Rxf4
Rh2
8.Rb4
b2-+
) 6...Rb1+
(6...Kf5
e.g. 7.Rb8
(Not 7.Ke1?
Kg5
8.Kd1
Rf2
9.Rxb3
Kh4
10.Ke1
Kg3
11.Rb8
Kxf3-+
) 7...Ke6
8.Rb4
Ke5
9.Kc1
Rc2+
10.Kd1
Rb2
11.Kc1=
) 7.Kd2
b2
8.Kc3!
(8.Kc2?
Rf1
9.Kxb2
Rxf3-+
) 8...Rf1
9.Rb5+!
Kf6
10.Kxb2!
Rxf3
11.Kc2!=
] 6.Ke2
Re3+
7.Kf2
Rd3
8.Ke2
Rc3
9.Re4+
Kf5
10.Ra4!
[10.Rb4?
Re3+!
11.Kf2
Ke5-+
] 10...Re3+
11.Kf2
Rd3
12.Ke2
Rc3
13.Ra5+!
[Thematic Try : 13.Rd4?
Rc2+
14.Kd3
Rf2
15.Rd5+
Ke6
16.Rb5
Rxf3+
17.Ke4
Rh3!
18.Kxf4
Kd6-+
] 13...Ke6
14.Ra4
Kf5
[14...b2
15.Rb4
Rc2+
16.Kd3
Rh2
17.Rb5
Rf2
18.Ke4!
Re2+
19.Kxf4=
] 15.Ra5+
Kf6
16.Ra4= .