1.g4!! fxg4 [1...Rb4 2.Kg3! fxg4 3.f5! Re4 4.e6! fxe6 5.f6+ Kf7 6.Rh8+-] 2.f5!

A) 2...g3+ 3.Kg2 Re3 [3...Rb2 4.e6! fxe6 5.f6+ Kf7 6.Rh8 Rxe2+ 7.Kxg3+-; 3...Rb4 4.f6! Kg6 5.e6 fxe6 6.Rg8 Kf7 7.Rg7 Kf8 8.Kxg3+-] 4.e6! Rxe2+ [4...fxe6 5.f6+ Kf7 6.Rh8 Rxe2+ 7.Kxg3 <same as main line>] 5.Kxg3 fxe6 6.f6+ Kf7 7.Rh8! [7.Rd7+ Kg8 8.Rg7+ Kh8 9.Re7 Kg8 10.Re8+ Kf7 11.Rh8 <waste of time>] 7...Kg6 [7...Re1(5) 8.Rxh7+] 8. Rg8+ Kf7 9. Rg7+ Kf8 10. Rxh7+-

B) 2...Rc3 3.f6+! [3.e6? fxe6 4.f6+ Kf7 5.Rh8 Rc5! 6.Rxh7+ Kf8=] 3...Kg6 4.e6 fxe6 5.Rg8+ Kf7 6.Rg7+ [6. Rh8? Rh3=] 6...Kf8 7.e3! [7.Rxh7? Rc5=] 7... Rc1 [7...b4 8.Kg3 Rxe3+ 9.Kxg4 b3 10.Rxh7+-] 8.Kg2! [8.Kg3? Rg1+ 9.Kf4 Rh1 10.Ke5 (10.Kxg4 b4=) 10...Rh4 11.Kxe6 g3=] 8...Rc5 9.Kg3 b4 10.Kxg4 b3 11.Rxh7 Rf5 12.e4! b2 13.Rh1! Rf2 14.Kg3+-

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