(;GM[1]FF[4]SZ[19]
GN[Variation at B6 above]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem78/Solution]AP[GoWiki:2009]
DT[2023-02-01]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem78/Solution

Variation at B6 above]
PL[W]

AB[mb][ob][pb][kc][mc][nc][qc][qd][ne]
AW[ib][jb][oc][pc][id][ld][md][nd][rd][je][pe][qe][rf]

;W[rb]C[W1]MN[1]
;B[kb]C[B2]MN[2]
;W[ka]C[W3]MN[3]
;B[la]C[B4]MN[4]
;W[lc]C[W5]MN[5]
;B[na]C[B6]MN[6]
;W[lb]C[W7]MN[7]
;B[qb]C[B8]MN[8]
;W[ma]C[W9]MN[9]

;
)
