<span style="font-size: 12pt; line-height: 107%; font-family: Arial, sans-serif;">In main is always bad move bxa7 - refutations to capture <b>1.Na6+! </b>[1.Bd5? Qc1+ 2.Kxg2 Qxc4 3.Nd7+ Kc8 4.Bxb7+ Kxb7 5.Nd3 Qe4+ 6.Kg1 Qg6+ 7.Kh1 Ka8 8.Ne1 Bb8 9.Nxb8 Kxb8–+; 1.Nd7+? Ka8 2.Bd5 Qh5 3.Kxg2 Qg4+ 4.Bg3 Qxc4 5.Bxb7+ Kxb7 6.bxa7 Qe2+ 7.Bf2 Qg4+ 8.Kf1 Qxd7–+] <b>1...Bxa6 2.Nd7+ </b>[2.bxa7+? Ka8 3.Bd5+ Bb7 4.Ne6 Qe5 5.Bxb7+ Kxb7 6.Nc5+ Ka8 7.Kxg2 Qg7+ 8.Kf3 Qf7+ 9.Ke3 Kxa7–+] <b>2...Ka8 </b>[2...Kb7 3.Bd5+ Kc8 4.bxa7=] <b>3.Bd5+ Bb7 4.Bxb7+ </b>[4.bxa7? Bxd5 5.cxd5 Qg4 6.Nb6+ Kxa7–+] <b>4...Kxb7 5.Nc5+ </b>[5.bxa7? Qg4 6.Nb6 Kxa7 7.Nd5+ Kb7 8.Ne3 Qh3 9.Nxg2 Kc6–+] <b>5...Kb8 </b>[5...Kc6 6.bxa7 Qg8 7.Ne4 Kb7 8.Ng3 Qxc4 9.Kxg2=] <b>6.Na6+ </b>[6.bxa7+? Ka8 7.Ne6 Qe5 8.Nd4 Qe4 9.Kh2 Qg4 10.Bg1 Kxa7–+; 6.Nd7+? Ka8 7.bxa7 Qg8 8.Nb6+ Kxa7 9.Nd5+ Kb7 10.Ne3 Kc6 11.Nxg2 Qxc4–+] <b>6...Kb7 </b>[6...Ka8 7.Nc7+ Kb7 8.bxa7=] <b>7.Nc5+ </b>switchback [7.bxa7? Qg7 8.Nc5+ Ka8 9.Kh2 Qg4–+] <b>7...Ka8 8.b7+ Kb8 9.Bg3+! Qxg3 </b>model pin stalemate.</span>