1.Ba3
Kb3
2.Nxb5
[2.Be7?
a3=
] 2...c6
3.e4!
[3.Be7?
cxb5
4.Kxb5
a3=
; 3.Ne6?
cxb5
4.Be7
a3=
] 3...cxb5
[3...Rxf6
4.Nd7
(4.e5?
Rf1
) 4...Rg6
(4...Rf1
5.Nc5++-
) 5.Nc5+
Ka2
6.Nd6
Rxd6
7.Kxa4
Rd8
8.Bb4
Ra8+
9.Ba5+-
] 4.e5
Kxa3
[4...b4
5.Bxb4
Ra7+
6.Kb6+-
] 5.e6
Rxf6
6.e7
b4
7.e8Q
Excelsior 7...Rf5+
8.Ka6!
[8.Kb6?
b3
9.Nd7
b2
10.Qe3+
Ka2=
] 8...b3
9.Nd7
[9.Qe4?
b2
10.Qxf5
b1Q
11.Qxb1
stalemate] 9...b2
10.Nb6
main B 10...Rf4
[main A 10...b1Q
Excelsior 11.Nc4+!
Ka2
(or 11...Kb3
12.Nd2++-
fork1; 11...Kb4
12.Qb8++-
) 12.Qxa4#
] 11.Qb5!
Rb4
12.Qd3+
Ka2
13.Nd5!
[Thematic try 13.Nc4?
Rb6+!
(13...b1Q?
14.Qa3#
) 14.Ka5
Rb5+!
15.Kxa4
Rb4+!
16.Ka5
Rb5+
17.Ka6
Rb6+
18.Ka7
Rb7+
19.Ka8
Rb8+
20.Ka7
Rb7+
positional draw] 13...Rb3
[main 13...Rb6+
14.Ka5!
b1Q
15.Nc3++-
fork2] 14.Qc4
b1Q
15.Nc3++-
fork3.