(;GM[1]FF[4]SZ[19]
GN[B5 fills WW, White doesn't have an eye on the left.]
PC[http://senseis.xmp.net/?BiggestKnownEyeSpaceForWhichThereIsANakade/Solution4]AP[GoWiki:2009]
DT[2009-09-09]
C[Diagram from http://senseis.xmp.net/?BiggestKnownEyeSpaceForWhichThereIsANakade/Solution4

B5 fills WW, White doesn't have an eye on the left.]
PL[B]

AB[ab][bb][mb][nb][ob][bc][gc][bd][fd][gd][id][kd][md][ce][de][ee][ie][ke][df][ff][if][kf][mf][dg][fg][gg][hg][ig][dh][kh][di][ei][fi][gi][hi][ii][ji][ki]
AW[ba][ma][na][cb][gb][hb][kb][lb][cc][fc][hc][ic][kc][dd][ed][hd][jd][he][je][ef][hf][jf][eg][jg][eh][fh][gh][hh][ih][jh]
CR[fc]

;B[fb]C[B1]MN[1]
;W[eb]C[W2]MN[2]
;B[ec]C[B3]MN[3]
;W[fa]C[W4]MN[4]

;CR[fc]
)
