(;GM[1]FF[4]SZ[19]
GN[Black wins (B11 at ''a'')]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem112/Solution]AP[GoWiki:2009]
DT[2023-02-02]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem112/Solution

Black wins (B11 at ''a'')]
PL[B]

AB[lb][qb][rb][lc][pc][sc][md][pd][qd]
AW[kb][ob][kc][qc][rc][kd][rd][le][me][oe][qe][of][rf]
LB[oc:a]

;B[nc]C[B1]MN[1]
;W[pb]C[W2]MN[2]
;B[sd]C[B3]MN[3]
;W[re]C[W4]MN[4]
;B[nb]C[B5]MN[5]
;W[qa]C[W6]MN[6]
;B[pa]C[B7]MN[7]
;W[oa]C[W8]MN[8]
;B[sa]C[B9]MN[9]
;W[se]C[W10]MN[10]

;LB[oc:a]
)
