<div class='user_solution'><b>1. Rc7!</b>  [1. Bg5? Qxg5 2. Nd5 Qg3+ 3. Kxb4 Qg4+ 4. Bc4 Qxd7-+; 1. Be6? Rd4 2. Rxd4 Qxd4 3. Nb5 Qxd2-+; 1. Ne4? Qxe4 2. Bxb4 Qa8+ 3. Ra7 Qxa7+ 4. Ba5 Qxa5#]  <b>1... Kxd2 2. Nb1+!  Rxb1 </b> [2... Ke3 3. Rc3+ Kf2 4. Rc2+ (perpetual check)]  <b>3. Rd7+</b> [3. Bxb1?  Qg3+ -+] <b> 3... Ke2</b>   [3... Kc2 4. Rc7+<i> (4. Bxb1+? Kxb1-+)</i> 4... Kd2 5. Rd7+ Kc2 <i>(5... Ke3 6. Bxb1=)</i> 6. Rc7+ (positional draw)]  <b>4. Bxb1 Qh3+ 5. Rd3! =</b>  [5. Bd3+? Kd2-+) <br /><b>1/2-1/2</b><br /></div>