1.Kf3!
[1.Rxg7?
Bb6+
2.Kf3
Nc6!
3.Rh7+
Kg1
4.Rh6
Ne5+
5.Ke4
Nd7
6.Rd6
Nc5+
7.Kd5
Na4
8.Kc4
Be3=
] 1...Nc6
[1...Bd8
2.Rg2+
main line]
2.Rg2+!!
[2.Rxg7?
Bd8=
] 2...Kh1
[2...Kh3
3.Rxg7
Nd4+
4.Ke4
Ne6
5.Re7
Ng5+
6.Kf5
Bg3!
7.a4!
Nf3
8.Ke4
Ng5+
9.Kd5
Kg4
10.a5+-
] 3.Rxg7
Bd8
[3...Nd4+
4.Kf2+-
] 4.Ke4!
[Try: 4.Kf2?
Bh4+!
5.Kf3
(5.Ke2
Kh2
) 5...Nd4+!
6.Ke4
Ne6
7.Rg4
(7.Rg6
same play 7...Nc5+
8.Kd5
Bf2
9.Rf6
) 7...Nc5+
8.Kd5
(8.Kd4
Bf2+
) 8...Bf2
9.Rf4
Be3
10.Rf3
Bg1=
] 4...Ne7
[4...Kh2
5.Rg6
Na5
6.Kd5
Kh3
7.Ra6
Kg4
8.Kd6
Nc4+
9.Kd7
Ba5
10.Kc6
Bd2
11.Ra4+-
; 4...Nb4
5.a4
Kh2
6.Rd7
Ba5
7.Rb7
Kg3
8.Rb5
Nc6
9.Rc5+-
] 5.a3!!
zz,btm [Thematic try: 5.a4?
Kh2!
zz,wtm 6.Ke5
Nc8!
7.Rg8
Bc7+
8.Ke4
Nb6!
9.a5
Nd7!
10.a6
Nc5+=
; 5.Ke5?
Kh2!
6.Ke6
Nc6!
7.Kd7
Nb4
8.a3
Nc2
9.a4
Ba5!
10.Rg5
Bd2=
] 5...Kh2
6.a4!
zz,btm 6...Kh3
7.Ke5
Nc8!
[7...Nc6+
8.Kd5
Nb4+
9.Kc4
Nc6
10.Rg8+-
] 8.Rg8!
[8.Ke6?
Nb6!
9.a5
Na4
10.a6
Nc5+=
; 8.Kf4
Ne7
loss of time] 8...Bc7+
9.Ke4!
[9.Ke6?
Nb6!
10.a5
Na4
11.a6
Nc5+=
] 9...Nd6+
10.Kd5
Nf5
11.Rg5
[11.Kc6?
Ba5!
12.Rg5
Nd4+
13.Kb7
Bc3=
] 11...Ng3
[11...Ne7+
12.Ke6
Nc6
13.Rc5+-
]
12.Kc6
Bf4
[12...Bd8
13.Rd5+-
] 13.Rd5!+-
[13.Rb5?
Bd2=
]