(;GM[1]FF[4]SZ[19]
GN[Failure at 3 (ii)]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem66/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem66/Solution

Failure at 3 (ii)]
PL[B]

AB[eq][fq][hq][dr][gr][ir][ds]
AW[ep][fp][gp][hp][ip][cq][dq][iq][kq][cr][jr]

;B[fs]C[B1]MN[1]
;W[er]C[W2]MN[2]
;B[is]C[B3]MN[3]
;W[gq]C[W4]MN[4]

;
)
