> (49,0,0) in 7.0 moves: 1. h4 h5 2. T-h3 Th6 3. Ta3 Tf6 4. Txa7 Txf2 > 5.Ta3 Ta4 6.Tg3 Tf4 7. Tg7 Txf1# Is it possible to construct a purely orthogonal mate without any capture, ie some NC#(a,0,0)?