(;GM[1]FF[4]SZ[19]
GN[Book Solution doesn't reduce ko threats (5 captures)]
PC[http://senseis.xmp.net/?BeginnerExercise256/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise256/Attempts

Book Solution doesn't reduce ko threats (5 captures)]
PL[B]

AB[ia][cb][ib][cc][hc][ic][cd][id][ce][de][ee][fe][ge][he][ie]
AW[fa][db][eb][dc][gc][dd][fd][gd][hd]

;B[gb]C[B1]MN[1]
;W[ed]C[W2]MN[2]
;B[fb]C[B3]MN[3]
;W[fc]C[W4]MN[4]
;B[ga]C[B5]MN[5]
;W[hb]C[W6]MN[6]

;
)
