Milewski, Stefan 2014  Warsaw Solving Grand Prix 2013 Sp. Commend   1.Qd7 Q:f4 2.Rd5 Qf6x 1.Bd6 g6 2.Qe5 Qf7x black opens a black line in one phase and a white line in another phase hx2 2 sol.   3+4   id=17