(;GM[1]FF[4]SZ[19]
GN[Desaster for black]
PC[http://senseis.xmp.net/?ElementaryCourse]AP[GoWiki:2009]
DT[2009-10-12]
C[Diagram from http://senseis.xmp.net/?ElementaryCourse

Desaster for black]
PL[B]

AB[ec][dd][fd][de][ge][ef][hf][fg][ig][gh][jh][hi][ki][ij][lj][jk][mk][kl][nl][lm][om][mn][no]
AW[ed][ee][fe][ff][gf][gg][hg][hh][ih][ii][ji][jj][kj][kk][lk][ll][ml][mm][nm][nn][on][pp]
CR[gd][he][if][eg][jg][fh][kh][gi][li][hj][mj][ik][nk][jl][ol][km][pm][ln][mo][np]

;B[pn]C[B1]MN[1]
;W[oo]C[W2]MN[2]
;B[op]C[B3]MN[3]
;W[po]C[W4]MN[4]

;CR[gd][he][if][eg][jg][fh][kh][gi][li][hj][mj][ik][nk][jl][ol][km][pm][ln][mo][np]
)
