(;GM[1]FF[4]SZ[19]
GN[variation: white can't block]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem24/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem24/Attempts

variation: white can't block]
PL[B]

AB[fb][fc][hc][cd][dd][ed][cf]
AW[eb][bc][cc][ec]

;B[ea]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[dc]C[B3]MN[3]
;W[db]C[W4]MN[4]
;B[cb]C[B5]MN[5]

;
)
