判斷正方形 左右與上下相鄰皆不同 (13094)

A1:H8=SUMPRODUCT(N(MMULT(N(A1:H8=B1:I8),ROW(1:8)^0)=COUNTIF(A1:A8,"")))+SUMPRODUCT(N(MMULT(COLUMN(A:H)^0,N(A1:H8=A2:H9))=COUNTIF(A1:A8,"")))=COUNTA(A:A)*2



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