(;GM[1]FF[4]SZ[19]
GN[Alternative Solution]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem258/Solution]AP[GoWiki:2009]
DT[2023-01-27]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem258/Solution

Alternative Solution]
PL[B]

AB[pj][qj][rj][pk][rk][nl][ol][nm][nn][qn][po][pp][qp][qq][qr][qs][rs]
AW[qk][pl][ql][rl][om][pn][qo][ro][rp][rq][rr]
LB[rm:a]

;B[on]C[B1]MN[1]
;W[rn]C[W2]MN[2]
;B[sl]C[B3]MN[3]
;W[qm]C[W4]MN[4]
;B[sm]C[B5]MN[5]
;W[sn]C[W6]MN[6]
;B[pm]C[B7]MN[7]

;LB[rm:a]
)
