"Secure your weak stones! Don't let your opponent split your stones in two weak groups!" Where should Black play?
(;AB[qd]AB[oc]AB[ph]AB[pq]AB[nq]AB[qp]AB[qo]AB[cj]AB[bd]AW[dp]AW[gq]AW[pj]AW[jc]AW[dd]AW[cc]AW[fd]AW[ch]AB[cf]AB[ef]AP[goproblems]
(;B[di]LB[di:1]C[Black 1 is urgent as it secures his stones on the left side. If White were to play at 1, Black's stones would be split in two and Black would be in for a hard fight.RIGHT])
(;B[cm]
(;W[eh];B[bp];W[cq];B[bq];W[br];B[ej];W[fi];B[fj];W[ff])
(;W[di];B[dj];W[ei];B[ej];W[gi];B[fj];W[fi])))