(;GM[1]FF[4]SZ[19]
GN[First strengthen the lower left]
PC[http://senseis.xmp.net/?BQM51]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM51

First strengthen the lower left]
PL[B]

AB[db][fb][hb][jb][kb][ec][jc][pc][fd][gd][hd][jd][kd][ge][he][ie][qe][lh][nh][ph][ck][el][dm][cn][dn][lp][op][qp][jq]
AW[ib][cc][dc][ic][kc][lc][mc][ed][id][ld][de][fe][je][ke][ff][if][lf][hg][ci][nj][pj][dk][cl][dl][cm][cp][ep][hq][mq]
CR[mq]
LB[mp:b][fq:a]

;B[ek]C[B1]MN[1]
;W[dj]C[W2]MN[2]
;B[gn]C[B3]MN[3]

;CR[mq]
LB[mp:b][fq:a]
)
