(;SZ[19]GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]AW[oa]AW[lb]AW[mb]AW[pb]AW[nc]AW[oc]AW[pc]AW[nd]AW[pd]AW[oe]AW[pe]AB[la]AB[ma]AB[pa]AB[kb]AB[qb]AB[kc]AB[qc]AB[md]AB[qd]AB[me]AB[ne]AB[qe]AB[of]AB[pf]RU[Japanese]C[Kill white](;B[nb];W[ob](;B[mc];W[na];B[ka]C[Good job!CHOICERIGHT])(;B[na];W[ka]C[White alive])(;B[ka];W[na];B[mc]C[GreatCHOICERIGHT])(;B[lc];W[na](;B[mc];W[ka])(;B[ka];W[mc])))(;B[na](;W[nb](;B[ob]C[Disadv. ko])(;B[ka];W[qa];B[ra];W[pa]C[White is alive!]))(;W[mc];B[ob];W[nb];B[oa]))(;B[mc](;W[nb];B[ka];W[na]C[White is aliveCHOICE])(;W[na];B[nb];W[ka]C[White is aliveCHOICE]))(;B[qa];W[nb])(;B[lc];W[nb]))