(;GM[1]FF[4]SZ[19]
GN[thickness problem]
PC[http://senseis.xmp.net/?BQM403]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM403

thickness problem]
PL[B]

AB[eb][fb][ec][kc][lc][mc][dd][ed][fd][id][jd][pd][ce][de][ge][he][ff][qf][ck][dk][gn][in][ln][on][co][do][fo][ho][po][bp][dp][fp][ip][op][bq][eq][fq][gq][iq][oq][cs][ds]
AW[gb][kb][lb][mb][fc][gc][ic][jc][gd][hd][ee][fe][cf][df][ef][di][cj][pj][pm][pn][go][qo][gp][hp][kp][qp][hq][jq][mq][pq][ar][br][cr][dr][er][fr][gr][hr][ir][bs][fs][is]
CR[pj][po][op][oq]
LB[ch:c][mh:a][nj:b][no:d]

;B[fg]C[B1]MN[1]

;CR[pj][po][op][oq]
LB[ch:c][mh:a][nj:b][no:d]
)
