(;AW[df]AW[cg]AW[bg]AW[ag]AW[ah]AB[ai]AB[bh]AB[ch]AB[dh]AB[dg]AW[eg]AW[eh]AB[ei]AB[ej]AW[fi]AB[fk]AW[gk]AW[fl]AW[el]AW[dl]AW[cl]AW[bm]AB[bl]AB[bj]AB[ck]AB[dk]AW[ef]AW[ci]AW[gj]C[What is black's best move?]AW[bn]AW[cf]AW[gl]AW[dn]AP[goproblems]
(;B[di]
(;W[al]
(;B[bk];W[ak]
(;B[cj]C[RIGHT])
(;B[aj];W[cj];B[am];W[al])
(;B[bi];W[cj]))
(;B[ak];W[bk]
(;B[cj];W[aj];B[bi]C[RIGHT])
(;B[aj];W[cj];B[bl];W[am])
(;B[bi];W[cj]))
(;B[aj];W[cj])
(;B[cj]C[RIGHT])
(;B[bi];W[cj]
(;B[ak];W[bk]C[ko])
(;B[bk];W[ak]))
(;B[dj];W[ak])
(;B[ek];W[cj]
(;B[bk];W[ak])
(;B[ak];W[bk]C[ko])))
(;W[cj];B[ak]C[RIGHT])
(;W[ak];B[al]C[RIGHT]))
(;B[bi];W[al]
(;B[ak];W[bk]C[ko])
(;B[bk];W[ak])
(;B[di];W[cj]
(;B[ak];W[bk]C[ko])
(;B[bk];W[ak]))
(;B[cj];W[di]
(;B[bk];W[ak])
(;B[ak];W[bk]C[ko])))
(;B[cj];W[di]
(;B[ak];W[bi])
(;B[al];W[bi])
(;B[am];W[bi])
(;B[bi];W[al]
(;B[bk];W[ak])
(;B[ak];W[bk]C[ko])))
(;B[dj];W[bi]
(;B[aj];W[di])
(;B[ak];W[di])
(;B[di];W[aj])
(;B[cj];W[di]))
(;B[ak];W[bi]
(;B[aj];W[di])
(;B[cj];W[di])
(;B[dj];W[di])
(;B[di];W[aj]C[ko]))
(;B[bk];W[bi]
(;B[aj];W[di])
(;B[di];W[aj]))
(;B[al];W[bi]
(;B[di];W[aj])
(;B[aj];W[di])
(;B[ak];W[di])
(;B[cj];W[di])
(;B[dj];W[di])))