(;GM[1]FF[4]SZ[19]
GN[Black's resistance (W4 at WC)]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem179/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem179/Solution

Black's resistance (W4 at WC)]
PL[B]

AB[qp][rp][mq][nq][oq][pq][sq][rr][sr]
AW[qm][rn][no][po][lp][mp][pp][lq][qq][rq][kr][mr][qr][ps][rs]
CR[qr]

;B[pr]C[B1]MN[1]
;W[os]C[W2]MN[2]
;B[qs]C[B3]MN[3]

;CR[qr]
)
