<span>a) bPf3→e3<span> </span></span><br /> <span><span></span>white) </span><span lang="CS">Kd3 Qc7 Bh3 Sg1<span>   </span>black) Ke1 Pe2 Pe3</span><span lang="CS"> </span><br /> <span lang="CS"></span><br /> <span lang="CS">1.Qc1+? (A)<span>    </span>1…Kf2!<span>  </span>(b)<span>   </span><br /> </span><span lang="CS">1.Qg3+?</span><span lang="CS"> (B)<span>    </span>1…Kd1! (a)<br /> </span><br /> <span lang="CS">1.Qc2?</span><span lang="CS"> (C) threat 2.Q:e2# (E)<span>     </span>1…Kf2!<span>  </span>(b) <br /> </span><span lang="CS">1.Qh2?</span><span lang="CS"> (D) threat 2.Q:e2# (E)<span>     </span>1…Kd1! (a)<br /> </span><span lang="CS">1.K:e3?</span><span lang="CS"> threat<span>  </span>2.Qc1# (A)<span>      </span>1…Kd1! (a)<br /> </span><span lang="CS">1.Kc2?</span><span lang="CS"><span>  </span>threat<span>  </span>2.Qg3# (B)<span>      </span>1…Kf2!<span>  </span>(b)<br /> </span><br /> <span lang="CS">1.S:e2!</span><span lang="CS"> (F) zugzwang<br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qc1# (A)<span>     </span><br /> </span><span>1…Kf2<span>  </span>(b)<span>  </span>2.Qg3# (B)<br /> </span><br /> <span>b) bPe2 = wPe2<span> </span><span> </span></span><br /> <span><span></span>white) </span><span>Kd3 Qc7 Bh3 Sg1 Pe2<span>   </span>black) Ke1 Pe3 <br /> </span><br /> <span lang="CS">1…f2<span>   </span>(c)<span>  </span>2.Qc1# (A)<br /> </span><span lang="CS">1.Qa7?</span><span lang="CS"> zz.<span>      </span>1…f:e2! (d)<br /> </span><span lang="CS">1…f2<span>   </span>(c)<span>  </span>2.Qa1#<span> </span><br /> </span><br /> <span lang="CS">1.Qb6?</span><span lang="CS"> zz.<span>      </span>1…f:e2! (d)<br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qb1#<span>     </span><span>     </span><br /> </span><span lang="CS">1…f2<span>     </span>(c)<span>  </span>2.Qb1#<br /> </span><br /> <span lang="CS">1.Qe5?</span><span lang="CS"> zz.<span>      </span>1…Kf2! (b)<br /> </span><span lang="CS">1…f:e2 (d)<span>  </span>2.Q:e2# (E)<span>    </span><br /> </span><span lang="CS">1.Kc2?</span><span lang="CS"> zz.<span> </span>1…Kf2! (b)<br /> </span><span lang="CS">1…f:e2<span>  </span>(d)<span>  </span>2.Qg3# (B)<span>    </span><br /> </span><br /> <span lang="CS">1.S:f3+!</span><span lang="CS"> (G) <br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qc2# (C)<br /> </span><span lang="CS">1…Kf2<span>  </span>(b)<span>  </span>2.Qh2# (D)<br /> </span><br /> <span>c) wQc7↔wBh3 </span><br /> <span><span></span>white) </span><span lang="CS">Kd3 Qh3 Bc7 </span><span lang="CS">Sg1<span>     </span>black) Ke1 Pe2 Pf3<br /> </span><span lang="CS"></span><br /> <span lang="CS">1.Q:f3?</span><span lang="CS"><span>   </span>threat<span>  </span>2.Q:e2# (E)<span> </span>1…Kd1! (a)<br /> </span><span lang="CS">1.S:f3+?</span><span lang="CS"> (G)<span>   </span>1…Kd1! (a)<span>  </span><br /> </span><br /> <span lang="CS">1.Qh1!</span><span lang="CS"><span>  </span>threat<span>  </span>2.Sh3#<br /> </span><span lang="CS">1…Kd1 (a) 2.S:e2 (F)<br /> </span><span lang="CS">1…Kf2<span>  </span>(b) 2.Sh3#<br /> </span><span lang="CS">1…f2<span>     </span>(c) 2.Sf3# (G)<br /> </span><span lang="CS">1…Kf1<span>   </span>2.Sh3 <br /> </span><br /> <span>d) = a) bPe2 = wPd2</span><br /> <span><span></span>white) </span><span lang="CS">Kd3 Qc7 Bh3 Sg1 Pd2<span>   </span>black) Ke1 Pe3<br /> </span><br /> <span lang="CS">1.S:e2?</span><span lang="CS"><span>  </span>zz.<span>    </span>1…e:d2! <br /> </span><span lang="CS">1.Qf4(Qf7)?</span><span lang="CS"><span>  </span>threat<span>  </span>2.Qf1# (H)<span>   </span>1…e2! (e)<span> </span><br /> </span><span lang="CS">1.Qe7?</span><span lang="CS"><span>  </span>zz.<span>   </span><span>   </span>1…Kd1! (a)<br /> </span><br /> <span lang="CS">1.Qe5!</span><span lang="CS"><span>  </span>zugzwang<br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qa1#<br /> </span><span lang="CS">1…Kf2<span>  </span>(b)<span>  </span>2.Q:e3#<br /> </span><span lang="CS">1…e2<span>    </span>(e)<span>  </span>2.Q:e2# (E)<br /> </span><br /> <span>e) = c) bPe2 = wPh2</span><br /> <span></span><span>white) </span><span>Kd3 Qh3 Bc7 Sg1 Ph2<span>    </span>black) Ke1 Pf3<span>  </span><br /> </span><br /> <span lang="CS">1.Bb6?</span><span lang="CS"><span>  </span>(I) zz.<span>      </span>1…f2! (c)<span>   </span><br /> </span><span lang="CS">1.Bg3+?</span><span lang="CS"> (J)<span>    </span>1…f2! (c)<span>    </span><br /> </span><span lang="CS">1.Qh6??</span><span lang="CS"><span>  </span>zz.<span>   </span>1…K~f!<span> </span><br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qd2#<span>    </span><br /> </span><br /> <span lang="CS">1.Se2??</span><span lang="CS"> (F) zz.<span>     </span>1…f3~!<span> </span><br /> </span><span lang="CS">1…Kf2<span>  </span>(b)<span>  </span>2.Bg3# (J)<span> </span><br /> </span><br /> <span lang="CS">1.S:f3+!</span><span> (G)<br /> </span><span lang="CS">1…Kd1 (a)<span>  </span>2.Qf1# (H)<br /> </span><span lang="CS">1…Kf2<span>  </span>(b)<span>  </span>2.Bb6# (I)<br /> </span><br /> <span>Dombrovskis, Bannij, Urania, Zagorujko ( 5x2 ) and change function move. <br /> </span><br /> <br /> <br /> <br />