(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?OD1PAug9Problem/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OD1PAug9Problem/Solution

Solution]
PL[B]

AB[np][op][pp][qp][oq][rq][sq][or]
AW[ql][qn][mo][no][oo][ro][mp][rp][jq][lq][nq][qq][nr][pr]

;B[pq]C[B1]MN[1]
;W[os]C[W2]MN[2]
;B[ps]C[B3]MN[3]
;W[qs]C[W4]MN[4]
;B[rs]C[B5]MN[5]
;W[rr]C[W6]MN[6]
;B[sr]C[B7]MN[7]

;
)
