<div class="user_solution"><span style="text-align:justify;display:block;" class="MsoNormal"><b>Theme: The elimination of the threat of stalemate in the black counterplay. Subtopics: a) Mutual pinned in cross ; b) Domination of QBN vs QB </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>1.Ne4</u>+! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Try I:</b> 1.Bc6+? d5 2.Nf5+ Kh1! 3.Qc1 Qg1+!</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>1...Kh1 2.Bf2</u> </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Try II :</b> 2.Nf2+? Kh2 3.Qf4+ Kg2 4.Qxc4 d5+ 5.Bc6 Rc7 /a6 6.Qxd5+ Kf1=</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>2...Qb1 3.Kh6</u>! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Try III</b> : 3.Qf5? Ra3! 4.Be3 Rxe3 5.Nf2+ Kg2 6.Qxb1 Rxe8 7.Ne4 Be2 8.Qc2 Rxe4! 9.Qxe4+ Bf3!=</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>3...Rh7</u>+ </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>main</b> <u>3...Qa1 4.Nf6! d5</u> <i>(4...Ra5 5.Qf4+-) </i><u>5.Qf4</u>! <i>(5.Bxa7? Qxa7 6.Qg3 Qd4=) </i><u>5...Ra3 6.Ng4!</u> <i>(6.Bc6? Kg2 7.Bd4 Qf1 8.Qd2+ Kh1 9.Nxd5 Qf8+ 10.Bg7 Qd6+ 11.Kh5 Qxc6 12.Qe1+ Kg2 13.Qe4+ Kh2 14.Be5+ Rg3!=) </i><u>6...Ra6+</u> <i>(6...Qh8+ 7.Kg5 Qg7+ 8.Bg6+-) </i><u>7.Kh7!</u> <i>(</i> <i>7.Kh5? Qh8+ 8.Kg5 Qg7+ 9.Kh4 Qe7+=) </i><u>Ra7+ 8.Bxa7 Qxa7+ 9.Bf7</u>+-</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>4.Kxh7 Bd3</u>! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal">4...Qxe4+ 5.Bg6 Qg2 6.Qe3/c1+-</span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>5.Bc6 Bxe4+ 6.Qg6</u>! </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"><b>Thematic Try</b> : 6.Qf5? d5 7.Bxd5 Kh2 8.Bxe4 Qb7+ <i>(no 8...Qxe4? 9.Bg3+!) </i>9.Bxb7 <b>stalemate</b></span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span> <span style="text-align:justify;display:block;" class="MsoNormal"><b><u>6...d5 7.Bxd5 Kh2 8.Bg3+! Kg1 9.Bxe4</u>+- </b></span> <span style="text-align:justify;display:block;" class="MsoNormal"> </span></div>