(;GM[1]FF[4]SZ[19]
GN[White to play. Where's the vital point to make the black group alive?]
PC[http://senseis.xmp.net/?WorstMoveProblem7]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?WorstMoveProblem7

White to play. Where's the vital point to make the black group alive?]
PL[W]

AB[hh][ih][jh][kh][lh][hi][li][hj][ij][lj][ik][jk][kk][lk]
AW[gg][hg][ig][jg][kg][lg][mg][gh][mh][gi][mi][gj][kj][mj][gk][hk][mk][hl][il][jl][kl][ll][ml]


;
)
