(;GM[1]FF[4]SZ[19]
GN[Variation at 4 in ML]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem90/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem90/Solution

Variation at 4 in ML]
PL[B]

AB[go][io][cp][ep][gp][ip][kp][dq][cr][ir][kr][fs]
AW[fq][gq][hq][lq][dr][er][hr][jr][lr][hs]
CR[ir]

;B[ks]C[B1]MN[1]
;W[iq]C[W2]MN[2]
;B[jq]C[B3]MN[3]
;W[is]C[W4]MN[4]
;B[js]C[B5]MN[5]
;W[kq]C[W6]MN[6]
;W[ls]C[W8]MN[8]

;CR[ir]
)
