Witztum, Menachem
2014  Warsaw Solving Grand Prix 2013
3. Hon. Mention
 
a) 1.Kf4 Qb3 2.Bf5 Qe3x
b) 1.Kf3 Q:b5 2.Re2 Qf5x




black opens a black line in one phase and a white
line in another phase


hx2 b) Ph3>d2   5+11   id=8