In this paper, a simple approach for detection of adjacent minterms and minimization technique is proposed. The proposed method factorized each minterms and 'don't-care' conditions into a group of maximum three inputs variables and these groups of minterms further coupled as per laws of simplification. The entire detection procedure is described here by mix binary-octal representations. A chart proposed in this paper for easy detection of adjacent minterms with fewer numbers of comparisons and can use for any number of variables. Logic adjacency property is played a significant role for logic circuit simplification. This novel method reduces the complexity of two-level simplification procedure. This paper also represents the performance of octal minterms based combinational circuit minimization technique in comparison with other traditional methods. The paper deals with a method based on representing minterms in the octal system that can be better suited for the manual method of logic minimization and hence may be worth considering.