(;GM[1]FF[4]SZ[19]
GN[double shortage of liberties]
PC[https://senseis.xmp.net/?GokyoShumyoSection3Problem59/Solution]AP[GoWiki:2009]
DT[2023-01-21]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection3Problem59/Solution

double shortage of liberties]
PL[W]

AB[ob][rb][sc][pd][qd][rd]
AW[nb][nc][od][sd][pe][qe][re][se]

;W[sb]C[W1]MN[1]
;B[sa]C[B2]MN[2]
;W[qb]C[W3]MN[3]
;B[pb]C[B4]MN[4]
;W[pc]C[W5]MN[5]
;B[oc]C[B6]MN[6]
;W[qc]C[W7]MN[7]
;B[rc]C[B8]MN[8]
;W[qa]C[W9]MN[9]

;
)
