(;GM[1]FF[4]SZ[19]
GN[Main line 1]
PC[https://senseis.xmp.net/?XuanxuanQijingProblem67/Solution]AP[GoWiki:2009]
DT[2023-02-07]
C[Diagram from https://senseis.xmp.net/?XuanxuanQijingProblem67/Solution

Main line 1]
PL[B]

AB[pp][qp][oq][rq][nr][or]
AW[mo][oo][po][qo][ro][rp][mq][nq][kr][mr][rr]

;B[sq]C[B1]MN[1]
;W[qr]C[W2]MN[2]
;B[qq]C[B3]MN[3]
;W[sr]C[W4]MN[4]
;B[rs]C[B5]MN[5]

;
)
