(;GM[1]FF[4]SZ[19]
GN[Local ko threat]
PC[http://senseis.xmp.net/?CapturingRaceExercise18/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?CapturingRaceExercise18/Attempts

Local ko threat]
PL[B]

AB[am][bm][cm][dm][bn][dn][ao][bo][co][dp][ep][fp][gp][hp][ip][aq][eq][fq][iq][br][er][fr][ir][es][fs][gs][hs][is]
AW[em][fm][gm][hm][im][en][gn][in][do][eo][fo][go][ho][io][jo][ap][bp][cp][jp][cq][dq][jq][cr][dr][jr][bs][cs][ds][js]

;B[as]C[B1]MN[1]
;W[ar]C[W2]MN[2]
;B[gq]C[B3]MN[3]

;
)
