(;GM[1]FF[4]SZ[19]
GN[Local ko threat]
PC[http://senseis.xmp.net/?KyuExercise13/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise13/Solution

Local ko threat]
PL[W]

AB[cm][fm][gm][bn][dn][bo][eo][fo][go][bp][cp][fp][ip][bq][gq][iq][cr][dr][er][gr][hr][ir][fs][hs]
AW[hl][hm][jm][co][do][ho][io][dp][gp][hp][jp][cq][dq][eq][fq][hq][jq][fr][jr][es]

;W[js]C[W1]MN[1]
;B[cn]C[B2]MN[2]

;
)
