(;GM[1]FF[4]SZ[19]
GN[Unconditional life]
PC[https://senseis.xmp.net/?IgoHatsuyoRonProblem12/Solution]AP[GoWiki:2009]
DT[2023-01-30]
C[Diagram from https://senseis.xmp.net/?IgoHatsuyoRonProblem12/Solution

Unconditional life]
PL[B]

AB[rc][pd][qf][rf][qi][qj]
AW[pb][qb][mc][oc][oe][of][pg][rg][ph][ri]
LB[rh:a]

;B[sf]C[B1]MN[1]
;W[qg]C[W2]MN[2]
;B[rb]C[B3]MN[3]
;W[ra]C[W4]MN[4]
;B[pe]C[B5]MN[5]
;W[sb]C[W6]MN[6]
;B[re]C[B7]MN[7]
;W[sc]C[W8]MN[8]
;B[rd]C[B9]MN[9]

;LB[rh:a]
)
