<div class='user_solution'><b>1.Nf7!!  </b>with 3 lines:<b> A) 1,,,Kf6! </b> (1...Qxf7 2.Ra3! theoretical draw) <b> 2.Nh6!  </b>(2.Nd8? Qe5(d6)+ 3.Kg1 Qe1+ 4.Kg2 Qe4+ 5.Kh2 Qf5!  6.Ra6+   Ke7 7.Nc6+ Kf8! 8.Ra8+ Kf7! -+ (but not  8...Kg7? 9.Rg8+! Kxg8 10.Ne7+ =)  <b>2...Kg5 </b> (2...Qe5+ 3.Kh3!  Qe6+ (3...Qh5+ 4.Kg3 Qg5+ 5.Ng4+=) 4.Ng4+ Kg6 5.Ra3! =; 2...Kg6 3.Ra6+ Kg5 4.Kg1! =) <b>3.Ra6 Qe2  4.Nf7+ Kf5  </b>(4...Kf4 5.Rf6+ =) <b>5.Nh6+ Kf4  6.Ra4+! </b>(6.Rf6+? Kg5 -+) <b> 6...Kf3  7.Ng4! Qf1  </b>(7...h5 8.Ra3+ Kxg4 9.Rg3+ =)<b> 8.Ne5+!  </b>draw.  <b>B)  1...Kg6!  2.Nd8!! Qd6+ </b>(2...Qxd8 3.Ra3(a6) =)<b> 3.Kg1! </b>(3.Kh3? h5! -+; 3.Kg2? Qd5+ -+)  <b>3...Qd1+ 4.Kh2! Qh5+  5.Kg1 Qd1+  6.Kh2 - </b>pos. draw.  <b> C)  1...Kf4! </b> (1...Kg4 2.Nh6+ Kg5 3.Ra6 Qe2 4.Nf7+ - main line)<b> 2.Kg1! </b> (2.Ra4+? Kf3 -+) <b> 2...Qe1+  </b>(2...Qxf7 3.Ra3! =) <b> 3.Kh2!  </b>(3.Kg2? Qe4+ 4.Kh2 Qd4!  5.Kg1 Qd1+ 6.Kh2 Qh5+ -+) <b> 3...Qe7!  4.Kg1! - </b>pos. draw </div>