n=30=self-2=n3=ne4=w6=e7=sw8=s的一些解(倒数方向总计10):
.00.00.00...00.67.48...68.47.00...68.47.00...00.78.00...68.48.00...00.00.00
.00.68.47...38.68.24...23.78.00...23.68.47...38.27.78...26.24.00...68.48.00
.00.23.00...26.24.00...36.24.00...00.23.00...23.36.24...00.00.00...26.24.00