(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[http://senseis.xmp.net/?RTGProblem49/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem49/Attempts

Black to play]
PL[B]

AB[bb][fb][bc][cc][dc][ec][fc][gc][hc][ic]
AW[fa][cb][db][eb][gb][hb][ib][jc][bd][cd][dd][ed][fd][gd][hd][id][jd]

;B[ea]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[ga]C[B3]MN[3]
;W[ha]C[W4]MN[4]

;
)
