<div><div><b>1.g6!  </b>[ 1.Nf7+? Ke8 2.g6 Re4+! 3.Kg5 Rg4+ 4.Kf6 ( 4.Kh6 Rxg6+= ) 4...Rxg6+ 5.Kxg6 Bd3+= ]  <b>1...Kd7  </b>[ 1...Rxg6 2.Nf7+ Ke8 3.d7+ Kxd7 4.Ne5+ +- ;  1...Re4+ 2.Kg5! +- ] <b>2.Nf7! Re4+! 3.Kh3!  </b>[ 3.Kg5? Rg4+ 4.Kf6 Rxg6+ 5.Kxg6 Bd3+= ]</div><div><b>3...Bg4+ 4.Kh2!  </b>[Logical try : 4.Kg2? Ke8! 5.d7+ Kxd7 6.g7 Re8 7.Ne5+ Position Y2, and white king is badly located on g-file, e.g. 7...Kd6 8.Nxg4 Rg8!= ]</div><div><b>4...Ke8 5.d7+! Kxd7 6.g7 Re8 7.Ne5+  </b>Position Y1   <b>7...Kd8 </b> [ 7...Kd6 8.Nxg4+- ]</div><div><b>8.Rd2+  </b>[ 8.Nxg4? Rg8 = ;  8.Nc6+? Kd7 = ]  <b>8...Kc8!  </b>[ 8...Ke7 9.Nxg4 Rg8 10.Nh6! Rxg7 11.Nf5+ +- ;  8...Kc7 9.Nxg4 Rg8 10.Nf6! Rxg7 11.Ne8+ +- ]  <b>9.Ng6!</b></div><div>[ 9.Nxg4? Rg8= ] <b> 9...Be6 10.Re2! Nf2! 11.Rxe6! Ng4+  </b>[ 11...Rg8 12.Re7! </div><div>( 12.Ne7+? Kd7 13.Nxg8 Kxe6 14.Nh6 Ng4+! 15.Nxg4 Kf7= ) 12...Ng4+ 13.Kg1!</div><div>as main ] <b> 12.Kg1!  </b>[Logical try : 12.Kh1? Rg8 13.Re7 Nh6 14.Rf7 Kd8 15.Ra7 Re8 Position X1 16.Kg2 Re6! =]  <b>12...Rg8 13.Re7 Nh6  </b>[ 13...Nf6 14.Rf7! Kd8 15.Ne5 Ne8 16.Nc6+ Kc8 17.Ne7++- ]  <b>14.Rf7! Re8 </b>[ 14...Kd8 15.Ra7 Re8 Position X2  16.Kf2!  +- ;14...Nxf7 15.Ne7+ Kd7 16.Nxg8+- ] <b>15.Rf6! Kb7 16.Nf4 Re7  </b>[ 16...Re1+ 17.Kg2  +-]  <b>17.Nh5!  win.</b></div></div><br />