(;GM[1]FF[4]SZ[19]
GN[Failure at move 5 in the main line]
PC[https://senseis.xmp.net/?GokyoShumyoSection1Problem23/Solution]AP[GoWiki:2009]
DT[2022-02-14]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection1Problem23/Solution

Failure at move 5 in the main line]
PL[W]

AB[jb][qb][kc][lc][oc][pc][jd][pd][me][oe][pe]
AW[kb][lb][ob][pb][mc][nc][od]
LB[ja:a]

;W[rb]C[W1]MN[1]
;B[qc]C[B2]MN[2]
;W[qa]C[W3]MN[3]
;B[rc]C[B4]MN[4]
;W[pa]C[W5]MN[5]
;B[ka]C[B6]MN[6]
;W[ma]C[W7]MN[7]
;B[na]C[B8]MN[8]
;W[nb]C[W9]MN[9]

;LB[ja:a]
)
