(;AW[dr]AW[er]AW[fq]AW[gq]AB[eq]AB[dq]AB[cq]AB[cr]AB[cn]AB[dm]AB[em]AB[cl]AW[cm]AW[bm]AW[dl]AW[dk]AW[cj]C[Black to kill White's 2 stones]TR[bm]TR[cm]AP[goproblems]
(;B[bl];W[bn]
(;B[bo];W[co]
(;B[an];W[dn];B[am];W[cn]
(;B[en];W[bp]
(;B[cp];W[ao];B[al];W[eo]C[]
(;B[dp]
(;W[do]C[CHOICE];B[fo];W[bk];B[ep]C[RIGHT])
(;W[fo]C[CHOICE];B[do]C[RIGHT])
(;W[bk]C[CHOICE];B[do]C[RIGHT]))
(;B[fo];W[bk]
(;B[do];W[dp];B[ep];W[ak];B[do];W[ck])
(;B[ep];W[ak]))
(;B[ep];W[bk];B[do];W[dp]C[Not the best ko]))
(;B[ao];W[ap];B[al];W[cp])
(;B[ap];W[ao]))
(;B[bp];W[en]))
(;B[am];W[dn]
(;B[an];W[cn]
(;B[en];W[bp]
(;B[cp];W[ao];B[al];W[eo]C[]
(;B[dp]
(;W[do]C[CHOICE];B[fo];W[bk];B[ep]C[RIGHT])
(;W[fo]C[CHOICE];B[do]C[RIGHT])
(;W[bk]C[CHOICE];B[do]C[RIGHT]))
(;B[fo];W[bk]
(;B[do];W[dp];B[ep];W[ak];B[do];W[ck])
(;B[ep];W[ak]))
(;B[ep];W[bk];B[do];W[dp]C[Not the best ko]))
(;B[ao];W[ap])
(;B[ap];W[ao]))
(;B[bp];W[en]))
(;B[ao];W[bp];B[an];W[cn]
(;B[cp];W[en])
(;B[en];W[ap];B[al];W[cp])))
(;B[dn];W[bp])
(;B[cp];W[dn];B[am];W[cn];B[an];W[bp]
(;B[ap];W[ao])
(;B[ao];W[en]))
(;B[bp];W[dn]
(;B[am];W[en])
(;B[an];W[en])
(;B[en];W[al]
(;B[am];W[an]
(;B[ao];W[bk])
(;B[ak];W[bk]
(;B[am];W[ck])
(;B[aj];W[ck])))
(;B[an];W[bk])
(;B[ak];W[bk]))))
(;B[co];W[bk]))
(;B[bn];W[bl]))