<div class='user_solution'><p style="margin-bottom: 0cm;"><i>Solution:</i></p> <p style="margin-bottom: 0cm;"><br /> </p> <p style="margin-bottom: 0cm;"><b>1. Se7 ! </b> threat: 2. Sxc6 Qxc6 3. Qxc6+ Kb8 4. Bh2 ! a4 5. Qxc7+ Ka8 6. Qb8 #</p> <p style="margin-bottom: 0cm;"><b>1....Qxe7 2. Qxc6+ Kb8 3. Qb5+ Ka8 4. Qxa5+ Kb8 5. Sd7+ !</b></p> <p style="margin-bottom: 0cm;"> <b>a) 5....Bxd7 6. Qa7+ Kc8 7. Qa8 # </b>Pure mate whith one selfblock.</p> <p style="margin-bottom: 0cm;"> <b>b) 5....Kb7 6. Qb5+ </b>switchback <b>Ka8 7. Qb8 #</b></p> <p style="margin-bottom: 0cm;"><br /> </p> <p style="margin-bottom: 0cm;"><i>Thematic try:</i></p> <p style="margin-bottom: 0cm;"><br /> </p> <p style="margin-bottom: 0cm;"> 1. Se5 ? Same threat.</p> <p style="margin-bottom: 0cm;"> 1....Qxe5 ! 2. Qxc6+ Kb8 3. Qb5+ Ka8 4. Qxa5+ Kb8 5. Sd7+ ! Kb7 ! and now the difference</p> <p style="margin-bottom: 0cm;"> with bQ of e5 instead of e7, 6. Qb5+ is not possible; 6. Sxe5 ? c5 ! 7. ?</p> <p style="margin-bottom: 0cm;"> <br /> </p> <p style="margin-bottom: 0cm;"> <br /> </p> <p style="margin-bottom: 0cm;"> Decoy sacrifice by white Knight with a 'small difference' between actual play and thematic try only</p> <p style="margin-bottom: 0cm;"> seen after black 5 th move.</p> <p style="margin-bottom: 0cm;"> <br /> </p> <p style="margin-bottom: 0cm;"> <br /> </p> <p style="margin-bottom: 0cm;"><i>Other try:</i></p> <p style="margin-bottom: 0cm;"><br /> </p> <p style="margin-bottom: 0cm;"> 1. Sf8 ? z a4 ! 2. Se6 ! threat: 3. Sc7+ Ka7 4. Se4+ Sd4 5. Bxd4 #</p> <p style="margin-bottom: 0cm;"> 2...Qxe6 3. Sxe6 Bxe6 4. Qxc6+ Kb8 5. Bh2 Ka7 ! 6. Bxc7 and 7. ?</p></div>