01│49│13│14│15│16│50│02
−−−−−−−−−−−−−−−
51│57│41│42│43│44│58│52
−−−−−−−−−−−−−−−
05│33│21│22│23│24│45│17
−−−−−−−−−−−−−−−
06│34│25│○│●│30│46│18
−−−−−−−−−−−−−−−
07│35│26│●│○│31│47│19
−−−−−−−−−−−−−−−
08│36│27│28│29│32│48│20
−−−−−−−−−−−−−−−
53│59│37│38│39│40│60│54
−−−−−−−−−−−−−−−
03│55│09│10│11│12│56│04

マス目を数字の順に石が置けるか置けないかチェックして、
置けたら置く

どう思う？昔、こうやって作ったことがあるのだが