<div class='user_solution'><b>1.f7! </b>[1.Bxd7? Nxf6 2.Bb5 Ne3! 3.Bf2 Ng2 4.Bc6 Nd5! 5.Bxd5 ideal stalemate with pin; 1.Bxc4? Nxf6=] <b>1...Rxf7 2.Bxf7 Ncd6 </b>[2...Ned6 3.Bh5 Kg1 4.Be2 zz 4...Ne4 5.Bh2+ Kf2 6.Bxc4+-] <b>3.Bh5! </b>[3.Bg6? Kg1!= zz; 3.Bd5+? Kg1 4.Bc6 Kf1=] <b>3...Kg1 </b>[3...Nf6 4.Bf3+ Kg1 5.Bxd6+-; 3...Ne4 4.Bf3+ Kg1 5.Bxe4+-] <b>4.Bg6! </b>zz <b>4...Kf1 5.Bd3+ Kg1 6.Be1! </b>[6.Bg6 Kf1 7.Bd3+ Kg1 8.Be1+- is only waste of time] <b>6...Nf6 </b>[6...Ng7 7.Bb4 Nb7 8.Ba6+-; 6...Nf7 7.Kg3+-] <b>7.Bc3 Nfe4 </b>or Nde4 <b>8.Bd4+ Nf2+ </b>[8...Kh1 9.Be3+-] <b>9.Kg3 and wins.</b> <div><br /></div><div>Meredith. Key - refusal to capture of rook.  Ideal stalemate with pin. Zugzwang and reciprocal zugzwangs.</div><br /></div>