(;GM[1]FF[4]SZ[19]
GN[Black to play and kill white]
PC[https://senseis.xmp.net/?HitachiNumber121]AP[GoWiki:2009]
DT[2022-10-31]
C[Diagram from https://senseis.xmp.net/?HitachiNumber121

Black to play and kill white]
PL[B]

AB[bb][cb][gb][bc][cc][ec][gc][dd][ed][gd][ce][cf][bg][cg]
AW[ba][ca][db][eb][fb][dc][bd][cd][be][bf]


;
)
