1.a5!
[1.Rd6?
c3
2.Rxb6
Bd3+
3.Kh6
c2
4.Rc6
e4
5.a5
e3
6.a6
Be4
7.Rxf6+
Ke7
8.Rf1
e2
-+; 1.Rd7?
Ke8
-+] 1...Bb7
[1...Ke7
2.axb6
=] 2.Rb5
Be4+
3.Kh8!
[3.Kh6?
bxa5
-+] 3...bxa5
[3...c3
4.axb6
c2
5.Rc5
=] 4.Rxe5!
Bb1
[4...fxe5
stalemate] 5.Rb5!
[5.Rxa5?
Bd3!
zz 6.Re5
(6.Ra7
f5
7.Rd7
Ke8
-+; 6.Rb5
Ke7
7.Kg7
f5
8.Kg6
f4+
9.Kg5
f3
10.Rb2
c3
-+; 6.Rh5
Ke7
7.Kg7
f5
8.Kg6
Ke6
9.Kg5
Ke5
10.Rh8
c3
-+) 6...Kf7!
zz] 5...Bc2
6.Rc5!
Bd3
7.Rxa5
zz 7...Kf7
[7...c3
8.Rc5
c2
9.Rxc2!
Bxc2
stalemate; 7...Ke7
8.Kg7
f5
9.Kg6
f4+
(9...Ke6
10.Kg5
=) 10.Kg5
f3
11.Ra2
c3
12.Kg4
=]
8.Re5!
zz 8...Kg6
[8...f5
9.Rxf5+!
Bxf5
stalemate] 9.Rc5
Kf7
10.Re5
Kg6
11.Rc5
f5
12.Rxc4!
Bxc4
stalemate.