Banaszek, Marcin 2014  Warsaw Solving Grand Prix 2013 5. Prize   1.S:f5 Rd1 2.Q:d6 d4x 1.S:d6 R:c3 2.Q:f5 R:e3x black opens a black line in one phase and a white line in another phase hx2 2 sol.   9+10   id=5