(;GM[1]FF[4]SZ[19]
GN[Black first]
PC[http://senseis.xmp.net/?BeginnerExercise104/Discussion]AP[GoWiki:2009]
DT[2014-07-12]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise104/Discussion

Black first]
PL[B]

AB[gf][hf][if][jf][kf][fg][lg][eh][mh][ei][ii][mi][ej][ij][mj][fk][lk][gl][hl][il][jl][kl]
AW[hg][ig][jg][gh][hh][jh][kh][gi][ki][gj][kj][gk][hk][ik][jk][kk]

;B[ih]C[B1]MN[1]
;W[hi]C[W2]MN[2]
;B[ji]C[B3]MN[3]

;
)
