(;GM[1]FF[4]SZ[19]
GN[Black's mistake?]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem162/Attempts]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem162/Attempts

Black's mistake?]
PL[B]

AB[ql][qm][qn][qo][qp][pq][pr][rr][qs][rs]
AW[pk][qk][rk][pl][sl][pm][pn][op][pp][sp][nq][qq][rq][nr][qr][sr]

;B[rp]C[B1]MN[1]
;W[sn]C[W2]MN[2]

;
)
