1...Rf8+
2.Ka7!
[2.Kb7?
Ne7=
] 2...Ne7
3.Qh1+!
[3.b7?
Nc6+
4.Kb6
Nd8+
5.Kb5
Rf5+
6.Kc4
Rf4+
7.Kd3
Rf3+
8.Ke2
Rf2+
9.Ke1
Rf1+=
] 3...Kg7
4.b7
[4.Qg2+?
Rg6!
5.Qxg6+
Kxg6
(5...Nxg6?
6.b7
Ne7
7.Ka6!!
Rc8
8.b8Q+-
) 6.b7
Rc8!!=
] 4...Nc6+
5.Kb6
(Ka6) 5...Nd8+
White has to play the golden mean! -> 6.Kb5!!
[Thematic try- 6.Ka5!?
- "Study in Study" KRRN-KQPP - BTM, draw: 6...Rf5+
7.Kb4
(7.Ka6
R8f6+
8.Ka7
Nc6+
9.Qxc6
Rxc6=
) 7...Rf4+
8.Kc3
Rf3+
bR has blocked a8-h1 and now - 9.Kd2
Nxb7
10.Qg1+
(10.c8Q
Rxc8
11.Qxf3
Rd8+
12.Kc3
Nd6=
) 10...Kf7!!
(10...Kf6?
11.Qb6++-
; 10...Kh8?
11.Qd4++-
) 11.Qb6
Na5!!
12.Qxa5
Rf6!!
13.Qd5+
(13.Qa2+
Ke7=
(13...Re6?
14.Qd5!
Ke7
15.Qb7+-
) ; 13.Qc5
Rc8=
) 13...Ke7
14.Qe5+
Kd7=
(14...Kf7
15.Kd3
Rc8
16.Kd4
Kg6
17.Qg3+
Kh5
18.Qh3++-
) ; 6.Ka7?
Nc6+
7.Kb6
Nd8+
8.Kb5
loss of time; This game is too fast! > 6.Kc5?
Ne6+!
(6...Rf5+?
7.Kc4
main line) 7.Kc6
Nxc7+!=
(7...Nd8+?
8.Kb5
main line) ] 6...Rf5+
7.Kc4!
[7.Kb4?
Rf4+
see the thematic try] 7...Rf4+
8.Kd3!
[8.Kc3?
Rf3+
see the thematic try] 8...Rf3+
9.Ke2!
Nxb7
10.Qg1+!
[10.c8Q?
Rxc8
11.Qxf3
Re8+=
] 10...Kh8
main B [main A 10...Kh7
11.Qb1+
Kg8
12.Qxb7+-
; 10...Kh6
11.Qb6++-
] 11.Qd4+
[11.c8Q?
Rxc8
12.Kxf3
Rf8+=
; 11.Qh1+
Kg7
12.Qg1+
loss of time] 11...Kg8
12.Qg4+
[12.Qd5+?
R3f7=
; 12.c8Q
Rxc8
13.Qg4+
Kh7!=
] 12...Kh7
13.Qe4+!
and after any move of bK is whites easy win [early will be - 13.Qxf3?
Rxf3
14.c8Q
Rf7=
; 13.Qd7+?
Kg6!=
(13...Kh6?
14.Qc6+
R3f6
15.c8Q+-
) ; 13.Qh5+?
Kg7
14.Qxf3
Rxf3
15.c8Q
Rf7=
]