(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[https://senseis.xmp.net/?OD1PMay22Problem/Solution]AP[GoWiki:2009]
DT[2022-03-13]
C[Diagram from https://senseis.xmp.net/?OD1PMay22Problem/Solution

Main line]
PL[B]

AB[ra][mb][rb][mc][pc][qc][nd][od][qd][pe][qe]
AW[qa][nb][qb][sb][lc][nc][rc][md][rd][me][re][of][pf][qf]
LB[ma:b][lb:a]

;B[na]C[B1]MN[1]
;W[oa]C[W2]MN[2]
;B[pa]C[B3]MN[3]
;W[pb]C[W4]MN[4]
;B[ob]C[B5]MN[5]

;LB[ma:b][lb:a]
)
