<div class='user_solution'><p style="margin-bottom: 0cm;"><u>Solution :</u></p> <p style="margin-bottom: 0cm;"> <b>1. Qe4 + !</b></p> <p style="margin-bottom: 0cm;"> 1. Qg4+ ? Kh6 ! (1...Kh7 ? 2. Qe4+ Rf5+ 3. Kd4 Rf8 4. b7  +- see main line) 2. Qh4+ Kg7 ! =</p> <p style="margin-bottom: 0cm;"> <b>1....Rf5+ </b><font color="#0000ff">selfpin</font><b> 2. Kd4 !</b></p> <p style="margin-bottom: 0cm;"> 2. Kd6 ? Rf6+ ! (2...Rf8 ? b7 ! +-) 3. Kc7 Rf7+ 4. Kd6 Rf6+ positional draw.</p> <p style="margin-bottom: 0cm;"> <b>2....Rf8 3. b7 Rb8 4. Qg4+ !</b></p> <p style="margin-bottom: 0cm;"> 4. Qe6+ ? Kg5 ! =</p> <p style="margin-bottom: 0cm;"> <b>4....Kf6 </b></p> <p style="margin-bottom: 0cm;"> <b>5. Qh4+ !</b></p> <p style="margin-bottom: 0cm;"> 5. Qg2 ? Rd8+ 6. Kc4 Rb8 7. Qc6+ Kg5 ! 8. Qg2+ Kf6 9. Qe4 Kg5 ! =</p> <p style="margin-bottom: 0cm;"> <b>5....Ke6 6. Qh6+ </b>(6. Qg4(e4+) (?) Kf6 7. Qh4+ Ke6 are losses of time).</p> <p style="margin-bottom: 0cm;"> <b>6....Rf6 </b><font color="#0000ff">selfpin</font><b> 7. Qh3+ !</b></p> <p style="margin-bottom: 0cm;"> 7. Qe3+ ? Kd7 ! (7...Kf7 ? eg. 8. Qe5+ ! Rxb7 9. Qd5+ and wins the Rook.) 8. Qe5 Rd6+</p> <p style="margin-bottom: 0cm;"> 9. Kc5 Rc6+ ! 10. Kd5 Rxb7 =</p> <p style="margin-bottom: 0cm;"> <b>7....Ke7 8. Qh4 !</b> <font color="#0000ff">pin. switchback.</font></p> <p style="margin-bottom: 0cm;"> 8. Qh7+ ? Rf7 ! 9. Qh4+ Kd7 ! (9...Ke6 ? 10. Qe4+ ! +-) 10. Qg4+ Ke7 11. Qh4+ Kd7</p> <p style="margin-bottom: 0cm;"> positional draw</p> <p style="margin-bottom: 0cm;"> <b>8....Rxb7 9. Qe4+</b> and wins the Rook +- <font color="#0000ff">switchback.</font></p> <p style="margin-bottom: 0cm;"> </p> <p style="margin-bottom: 0cm;"> </p></div>