(;GM[1]FF[4]SZ[19]
GN[Black secures]
PC[http://senseis.xmp.net/?BeginnerExercise320/Attempts]AP[GoWiki:2009]
DT[2012-11-16]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise320/Attempts

Black secures]
PL[W]

AB[ld][nd][od][le][me][oe][pe][kf][nf][of][kg][lg][pg][kh][nh][ph][ki][pi][lj][mj][nj][pj][qj][lk][ok][pk][pl][sl][pm][qm][sm][qn][rn][sn]
AW[pd][qd][rd][je][ke][qe][se][jf][pf][qf][jg][og][qg][jh][qh][ji][li][qi][si][kj][rj][kk][mk][nk][qk][rk][sk][kl][ll][nl][ol][ql][rl][om][rm][pn][po][qo][ro][so]
CR[so]
SQ[nh]
LB[ng:a]

;W[mg]C[W1]MN[1]
;B[mf]C[B2]MN[2]
;W[lh]C[W3]MN[3]
;B[lf]C[B4]MN[4]
;W[ni]C[W5]MN[5]
;B[oh]C[B6]MN[6]
;W[oj]C[W7]MN[7]
;B[oi]C[B8]MN[8]
;W[mi]C[W9]MN[9]

;CR[so]
SQ[nh]
LB[ng:a]
)
