<div class="user_solution">1. Nxc6 Rg8 2. Nd6+ Kf8 3. Qf4+ Bf6  4. Bxb7 Rh8 5. e7+ Kg8 6. e8+Q#<div>                                                             4. ...     Bxb7 5. e7#</div><div>                                                             4. ...     e2     5. e7#</div><div>                                                          …4. Nxb7?<span style="white-space: pre;"> </span>Bxb7<span style="white-space: pre;"> </span>5. Qb8+<span style="white-space: pre;"> </span>Bc8<span style="white-space: pre;"> </span>6. Qxc8+<span style="white-space: pre;"> </span>Bd8<span style="white-space: pre;"> </span>7. Qxd8#</div><div><br /></div><div> …<span style="white-space: pre;"> </span>Ra7<span style="white-space: pre;"> </span>2. Nd6+<span style="white-space: pre;"> </span>Bxd6<span style="white-space: pre;"> </span>3. Qd8#</div><div><span style="white-space: pre;"> </span>        2. Qxe7+<span style="white-space: pre;"> </span>Rxe7<span style="white-space: pre;"> </span>3. Nd6#</div><div>…<span style="white-space: pre;"> </span>Rc7<span style="white-space: pre;"> </span>2. Nd6+<span style="white-space: pre;"> </span>Bxd6<span style="white-space: pre;"> </span>3. Qd8#</div><div><span style="white-space: pre;"> </span>        2. Qxe7+<span style="white-space: pre;"> </span>…</div><div>…<span style="white-space: pre;"> </span>Rd7<span style="white-space: pre;"> </span>2. Qxe7+<span style="white-space: pre;"> </span>…</div><div>…<span style="white-space: pre;"> </span>Rh8<span style="white-space: pre;"> </span>2. Nd6+<span style="white-space: pre;"> </span>Bxd6<span style="white-space: pre;"> </span>3. Qd8#</div><div>…<span style="white-space: pre;"> </span>                         Kf8<span style="white-space: pre;"> </span>        3. Qxh8#</div><div>…<span style="white-space: pre;"> </span>         2. Qxh8+ Bf8<span style="white-space: pre;"> </span>3. Nd6#</div><div>…<span style="white-space: pre;"> </span>Rxf7<span style="white-space: pre;"> </span>2. gxf7+<span style="white-space: pre;"> </span>Kf8<span style="white-space: pre;"> </span>3. Qh8#</div><div>…<span style="white-space: pre;"> </span>e2<span style="white-space: pre;"> </span>2. Nd6+<span style="white-space: pre;"> </span>Bxd6<span style="white-space: pre;"> </span>3. Qd8#</div><div>…<span style="white-space: pre;"> </span>        2. Qxe7+<span style="white-space: pre;"> </span>Rxe7<span style="white-space: pre;"> </span>3. Nd6#</div><div>…<span style="white-space: pre;"> </span>Ba3<span style="white-space: pre;"> </span>2. Qd8#</div><div>…<span style="white-space: pre;"> </span>Bb4<span style="white-space: pre;"> </span>2. Qd8#</div><div>…<span style="white-space: pre;"> </span>Bc5<span style="white-space: pre;"> </span>2. Qd8#</div><div>…<span style="white-space: pre;"> </span>Bd6<span style="white-space: pre;"> </span>2. Nxd6#</div><div>…<span style="white-space: pre;"> </span>Bd8<span style="white-space: pre;"> </span>2. Nd6#</div><div>…<span style="white-space: pre;"> </span>Bf6<span style="white-space: pre;"> </span>2. Nd6#</div><div>…<span style="white-space: pre;"> </span>Bg5<span style="white-space: pre;"> </span>2. Nd6#</div><div>…<span style="white-space: pre;"> </span>Bxh4<span style="white-space: pre;"> </span>2. Nd6#</div><div>…<span style="white-space: pre;"> </span>Rb1<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb2<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb3<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb4<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb5<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb6<span style="white-space: pre;"> </span>2. Qxe7#</div><div>…<span style="white-space: pre;"> </span>Rb8<span style="white-space: pre;"> </span>2. Qxe7#</div><br /></div>