<div class="user_solution"><p class="MsoNormal"><span lang="EN-US">1. Qxb4?</span><span lang="FR"> Ka2!</span></p><p class="MsoNormal"><span lang="FR">1. Qb5? Ka2 2. Qa4+ Kb1 3. Qxb3 stalemate!<br /></span></p><p class="MsoNormal"><span lang="FR"><b>1. Qxc5!</b> dxc5 2. d8=Q Ka2 3. Qa5+ Kb1 4. Qxc5 Ka2 5. Qa7+ Kb1 6. </span><span lang="EN-US">Qxe3 Ka2 7. Qa7+ Kb1 8. Qa4! e3 9. Qxb3 e4 10. Ke1 Kc1 11. Qd1#<br />1. ... Ka2? 2. Qa7+ Kb1 3. Qxe3 Ka2 4. Qa7+ Kb1 5. d8=Q (6. Qh4 7. Qxe4#) short variation!<br /></span></p><p class="MsoNormal"><span lang="EN-US">Keywords: phenix, sacrifice of white piece (active), stalemate dissolution, flight giving key, stalemate avoidance, tempo move, tempo creation bP, annihilation, line opening, switchback, pendulum (k), square vacation, selfblock, remote selfblock<br /></span></p></div><br />