(;GM[1]FF[4]SZ[19]
GN[(W1 can also be at __''r''__ or __''s''__)]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem60/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem60/Solution

(W1 can also be at __''r''__ or __''s''__)]
PL[W]

AB[ak][al][bl][bm][bn][co][do][dp][bq][cq]
AW[bi][aj][bk][ck][cl][cm][cn][en][eo][gp][dq][eq][br][cr]
LB[am:r][an:s]

;W[bo]C[W1]MN[1]
;B[ao]C[B2]MN[2]

;LB[am:r][an:s]
)
