(;GM[1]FF[4]SZ[19]
GN[(W1 can also be at __''r''__ or __''s''__)]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem146/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem146/Solution

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

AB[rb][sb][oc][pc][rc][rd][se]
AW[na][nb][nc][nd][pd][pe][re][pf][rf]
LB[ra:r][qb:s]

;W[sd]C[W1]MN[1]
;B[pa]C[B2]MN[2]

;LB[ra:r][qb:s]
)
