1.Rb1+
[1.Qf7+?
Ka8
2.Qd5+
(2.Qe8+
Qb8=
) 2...Qb7
3.Qd8+
Ka7=
] 1...Rb6
(selfpin) 2.Qf7+
Ka8
(unpin) 3.Qe8+!
[3.Qf8+?
Rb8
4.Qf3+
Rb7=
] 3...Rb8!
(selfpin) [main A 3...Kb7
(selfpin) 4.Qe4+
Kb8
5.Qe5+
Kb7
6.Qxg7+!
(6.Qd5+?
Kb8
7.Qg8+
Kb7
8.Qxg7+
loss of time) 6...Kb8
7.Qe5+!
(other checks by queen gives a loss of time) 7...Kb7
8.Ra1!
Rb4+
9.Kh5!
Qd4
10.Qe7+
Kb6
(10...Kb8
11.Qe8+
Kc7
12.Rc1+
Kb6
(12...Rc4
13.Qf7++-
) 13.Qb8+
Ka5
14.Qa8+
Kb5
15.Qc6+
Ka5
16.Rc5++-
) 11.Qe6+
Kb7
(11...Kc5
12.Ra5++-
) 12.Qa6+
Kb8
13.Qa8+
Kc7
14.Ra7++-
; 3...Qb8
4.Ra1++-
] 4.Qe4+!
(unpin) [4.Qc6+?
Rb7
5.Qe4
g6
(h2)=] 4...Rb7
(selfpin) 5.Rc1!
(unpin) [5.Kxh3?
Qa3+!
(Not 5...Qa6?
6.Kg4+-
) 6.Kg4
Qe7!=
] 5...Qa6
[5...Qa5
6.Rc8+
Ka7
7.Qd4+
Rb6
(selfpin) 8.Qxg7+
as in main] 6.Rc6!
(unpin) [6.Rc8+?
Ka7
7.Qd4+
Rb6
8.Rc7+
Ka8
9.Qd8+
Rb8
10.Qd5+
Rb7=
] 6...Qa5
[6...Qa3
7.Rc8+
Ka7
8.Qd4++-
; main 6...Qb5
7.Rc8+
(unpin) 7...Ka7
8.Qd4+
Qb6
(selfpin) 9.Qa4+
(unpin) 9...Qa6
(selfpin) 10.Ra8++-
Echo] 7.Rc8+
(pin) 7...Ka7
(unpin) 8.Qd4+
Rb6
(selfpin) 9.Qxg7+!
(unpin) [Thematic try (logical) 9.Rc4?
Qb5!
10.Rc7+
Ka8!
(impossible 11.Qh8+ as in the main line after 12...Ka8). 11.Qd8+
Rb8=
(selfpin)] 9...Rb7
(selfpin) [9...Ka6
10.Ra8++-
] 10.Qd4+
(unpin) 10...Rb6
(selfpin) 11.Rc4!
[11.Qd7+
Rb7
12.Qd4+
loss of time; 11.Qg7+
Rb7
12.Qd4+
loss of time] 11...Qb5
[or also 11...h2
12.Ra4
(pin) 12...Qxa4
(pin) 13.Qxa4+
Kb8
14.Qe8+!+-
] 12.Rc7+
Ka6
[or also 12...Ka8
(unpin) 13.Qh8+
Rb8
(selfpin) 14.Qa1++-
(unpin)] 13.Qa1+
Qa5
(selfpin) 14.Ra7++-
Echo (see the main 6...Qb5).