(;GM[1]FF[4]SZ[19]
GN[Crude period]
PC[http://senseis.xmp.net/?BQM213]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM213

Crude period]
PL[B]

AB[pn][co][cp][jp][lp][pp][cq][lq][cr][mr][nr]
AW[dn][do][lo][dp][ip][mp][dq][jq][nq][oq][dr][or]

;B[ko]C[B1]MN[1]
;W[ln]C[W2]MN[2]
;B[iq]C[B3]MN[3]
;W[ir]C[W4]MN[4]
;B[hq]C[B5]MN[5]
;W[kq]C[W6]MN[6]
;B[kr]C[B7]MN[7]
;W[jr]C[W8]MN[8]
;B[hr]C[B9]MN[9]

;
)
