1.b7
[1.Ra2+!?
Kb1
2.b7
b3+
3.Ka4
bxa2
4.b8Q
Rd4+
5.Bc4+
Kc1
6.Rxa2
Rxc4+=
]
1...b3+
2.Ka4
b2
3.b8Q
Rd4+
4.Bc4!
Rxc4+
5.Kxa3
Bb4+
6.Qxb4!!
[6.Kb3!?
b1Q+
7.Kxc4
Qc1+
8.Kxb4
Nd3+
9.Kb3
Nc5+
10.Kb4
Na6+
11.Kb3
Nc5+
positional draw (11...Nxb8!?
12.Ra2++-
) ]
6...Rxb4
[main 6...Nc2+
7.Rxc2
Rxb4
8.Kxb4
b1Q+
9.Kc4!+-
(9.Ka3!?
Qb2+
10.Rxb2
stalemate; 9.Kc5!?
Qg1
10.Ra2+
Kb1=
; 9.Ka4!?
Qd1=
; 9.Ka5!?
Qe1+=
) ] 7.Rxe1+
[7.Rxb2?
Rxb2
8.Rxb2
Nd3=
]
7...b1N+!
[7...b1Q
8.Ra2#
] 8.Rxb1+
[8.Kxb4?
stalemate] 8...Rxb1
9.Ra2#