Go players select a next move depending on the given on-board pattern(OBP) that shows how black and white stones are located on the go-board. In this study, we define a new on-board pattern which is different from the existing one, and propose a new r...
Go players select a next move depending on the given on-board pattern(OBP) that shows how black and white stones are located on the go-board. In this study, we define a new on-board pattern which is different from the existing one, and propose a new representative on-board pattern(ROBP) - northeast-oriented ROBP. The new on-board pattern not only has a simpler structure but also enables easier implementation of OBP-related operations such as the computation of ROBP than the existing pattern does. We compute OBP and representative OBP at every move from two joseki (opening sequences of moves ) files and two game-record files by using the existing and the new definition respectively. We also observe the number of changes in the order sequence of four areas from those files, and show that new OBP gives less number of changes in the order sequence.