(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[http://senseis.xmp.net/?RTGProblem71/Attempts]AP[GoWiki:2009]
DT[2009-12-27]
C[Diagram from http://senseis.xmp.net/?RTGProblem71/Attempts

Black to play]
PL[B]

AB[gl][hl][fm][hm][fn][hn][jn][co][eo][io][cp][ep][fp][hp][jp][cq][hq][cr][gr][bs]
AW[fk][gk][hk][ik][el][il][im][km][cn][dn][en][gn][in][kn][bo][bp][ip][kp][bq][fq][gq][iq][kq][br][er][hr][ir][jr][gs][is]
SQ[gn][dq]

;B[gp]C[B1]MN[1]
;W[go]C[W2]MN[2]
;B[eq]C[B3]MN[3]
;W[fr]C[W4]MN[4]
;B[dr]C[B5]MN[5]
;W[ho]C[W6]MN[6]
;B[jo]C[B7]MN[7]

;SQ[gn][dq]
)
