1.d5!
1.g6? Kxd4 2.f4 Rf3 3.Kh7 (3.Kh6 Rb3= (3...Rh3+? 4.Kg5+-) ) 3...Rh3+ 4.Kg8 (4.Kg7 Rf3=) 4...Rb3=
1...Kc4
1...Ke4 2.Kf7! Ra6 (2...Kxd5 3.g6 Ra4 4.f3 main; 2...Rf3+ 3.Ke6! Rxf2 4.d6 Rb2 5.g6 Rxb6 6.g7 Rb8 7.d7+-) 3.d6!! Rxb6 4.d7+-;
1...Kd4 2.g6 Ra6 (2...Kxd5 3.Kf7 main) 3.Kh7! Rxb6 4.g7 Rb7 5.d6!
5.Kg6? Rxg7+=
5...Ke5 6.Kg6!+-
2.g6!
2.f4? Kxd5 (2...Rd3? 3.g6+-) 3.f5 Ra8!! 4.g6 Ke5 (4...Rb8? 5.Kh7+-) 5.Kf7 Rb8=
2...Kxd5
2...Rf3 3.d6 Kc5 4.d7+-;
2...Ra6 3.f4+-
3.Kf7!
3.f4? Ke6= (3...Ke4? 4.Kf7+-; 3...Rf3? 4.f5!! Ke5 5.b7+-; 3...Ra8? 4.Kf7+-)
3...Ra4
3...Ra2 4.f4!!
4.f3? Rf2 5.Ke8 Rg2!!=
4...Rf2 5.Ke8!! Rg2 6.f5
6.Kf7? Rf2 7.Ke8 loss of time
6...Ke5 (6...Kc6 7.Kf7+-) 7.Kf7! Kxf5 8.g7 Ke5 9.b7+-
4.f3!!
4.g7? Rf4+ 5.Ke7 Rg4 (5...Re4+? 6.Kf6 Rf4+ 7.Kg5+-) 6.Kf6 Kc6!= (6...Kd6? 7.f3!! Rf4+ 8.Kg5+-)
4...Ra3
4...Rf4+ 5.Ke8 Rxf3 6.b7 Re3+ 7.Kd8 Rb3 8.g7 Rg3 9.b8Q+-
5.f4
5.g7? Rxf3+=
5...Rf3 6.Ke8!!
6.Ke7? Rxf4= (6...Re3+ 7.Kf8!+-)
6...Re3+
6...Rg3 7.f5 Ke5 8.Kf7 Rd3 (8...Rf3 9.g7+-) 9.g7 Rd7+ 10.Kg6+-
7.Kf8!!
7.Kf7? Rf3 8.Ke8 loss of time
7...Rf3 8.b7!
8.Ke7? Rxf4= (8...Re3+? 9.Kf8 main)
8...Rxf4+ 9.Ke8! Re4+ 10.Kd8!
10.Kd7? Rb4=
10...Rb4 11.g7 Rg4 12.b8Q+-