(;GM[1]FF[4]SZ[19]
GN[Tricky ko position]
PC[http://senseis.xmp.net/?KoThreatPlayingOrder/preWMEmaterial]AP[GoWiki:2009]
DT[2011-12-13]
C[Diagram from http://senseis.xmp.net/?KoThreatPlayingOrder/preWMEmaterial

Tricky ko position]
PL[B]

AB[an][bn][go][ho][ap][bp][aq][bq][gq][hq][ar][br][gr][hr][as][gs][hs]
AW[co][cp][fp][ip][cq][fq][iq][cr][fr][ir][bs][cs][fs][is]
LB[bo:a][hp:b]


;LB[bo:a][hp:b]
)
