<div class='user_solution'><b><span style="font-size: 12pt; font-family: Arial;">1.Bf2+ </span></b><span style="font-size: 12pt; font-family: Arial;">[1.Bxc3? Rc6+=] <b>1...Ka6 </b>[1...Kb5 or Ka5 2.Rh5+ Ka4 3.Rh4+ Ka3 4.Bc5+ Kb2 5.Bxd6+-; 1...Kc6 2.Be8+ Kd5 3.Rxd3++-] <b>2.Be8! </b>[2.Bc4+? Ka5 3.Bxd3 Rc6+ 4.Kd7 c2=; 2.Rh5? Rc6+! 3.Kd7 c2=] <b>2...d2 </b>[2...Re6 3.Bd7 Rd6 4.Rh1+-; 2...c2 3.Rh1 Rd5 4.Be3+-] <b>3.Rxc3 </b>with mate threat <b>3...Rd8+! </b>[3...Ka5 4.Bc5 Rd8+ 5.Kxd8 d1Q+ 6.Kc7 Qa1 7.Ra3++-] <b>4.Kxd8 d1Q+ 5.Kc8! </b>[5.Kc7? Qa1! 6.Bd4 Qa5+=] <b>5...Qg4+ 6.Bd7 Qb4 </b>[6...Qg8+ 7.Kc7+-] <b>7.Rc5! </b>zz [try 7.Rc6+? Ka5 8.Rc5+ <i>(8.Bc5 Qb3!=) </i>8...Ka6!= zz] <b>7...Qd2 </b>[7...Qb7+ 8.Kd8 Qb6+ 9.Ke7! Qb4 10.Ke8! Qe4+ 11.Kd8+-; 7...Qb2 8.Rc6+ Ka5 9.Be1++-] <b>8.Bg3 Qe3 </b>[8...Qb2 9.Bc7+-; 8...Qg2 9.Rc6+ Ka5 10.Be1++-] <b>9.Bd6 Qe4 </b>[9...Qf3 10.Rc6+ Ka5 11.Kc7+-] <b>10.Rc6+ Ka5 11.Kc7 </b>[11.Rc5+ Ka6 12.Rc6+ Ka5 13.Kc7+- is only waste of time] <b>11...Qd4 12.Rc5+ </b>switchback <b>and wins</b>. </span><span style="font-family: Arial; font-size: 16px;">[12.Bc5? Qb2! 13.Be7 Qb6+! 14.Rxb6 stalemate] </span><b style="font-family: Arial; font-size: 16px;"> </b><div><span style="font-size: 12pt; font-family: Arial;"><br /></span></div><div><span style="font-size: 12pt; font-family: Arial;">Meredith. Black sacrifice. Reciprocal zugzwangs.</span></div><br /></div>