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

Mistake]
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]

;B[ob]C[B1]MN[1]
;W[lb]C[W2]MN[2]

;
)
