(;GM[1]FF[4]SZ[19]
GN[Making atari with W1 doesn't work.]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem130/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem130/Solution

Making atari with W1 doesn't work.]
PL[W]

AB[rn][qo][qp][qq][rr][rs]
AW[ql][rm][pn][qn][po][pp][pq][pr][qr]

;W[ro]C[W1]MN[1]
;B[rp]C[B2]MN[2]
;W[sn]C[W3]MN[3]
;B[sp]C[B4]MN[4]

;
)
