(;GM[1]FF[4]SZ[19]
GN[W1 makes black alive]
PC[http://senseis.xmp.net/?WorstMoveProblem13/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?WorstMoveProblem13/Solution

W1 makes black alive]
PL[W]

AB[jh][kh][lh][hi][li][hj][jj][hk][ik][jk][kk][lk]
AW[gg][hg][ig][jg][lg][mg][gh][mh][mi][gj][gk][mk][gl][hl][jl][kl][ll][ml]

;W[ki]C[W1]MN[1]

;
)
