n=30=self-2=n3=ne4=w6=e7=sw8=s的一些解(倒数方向总计10)
.00.78.00.67.46.47...00.78.78.78.78.00...00.78.78.00.78.78...00.00.68.48.00.00
.38.26.34.78.38.00...38.23.23.23.26.47...38.23.27.37.23.28...68.48.26.24.67.47
.26.46.34.26.24.00...26.46.46.46.34.00...26.34.36.46.46.24...26.24.00.36.34.00
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