(;AB[di]AB[dh]AB[eh]AB[ei]AB[eg]AB[ef]AB[ff]AB[fg]AB[gf]AB[gg]AB[fh]AB[fi]AB[gh]AW[ci]AW[ch]AW[cg]AW[dg]AW[df]AW[de]AW[ee]AW[fe]AW[ge]AW[hf]AW[hg]AW[ig]AW[ih]AW[hi]AW[gi]AW[ie]AW[fj]AW[ek]AW[fl]AW[gl]AB[gj]AB[el]AB[em]AB[dn]AB[dk]LB[dk:A]TR[di]TR[dh]TR[eh]TR[ei]TR[fi]TR[fh]TR[gh]TR[gg]TR[fg]TR[eg]TR[ef]TR[ff]TR[gf]C[Kill the marked stones!]AB[cl]AP[goproblems] (;W[dj];B[cj] (;W[ej];B[fk]C[black escapes]) (;W[fk];B[ej];W[hh];B[dj]C[black escapes]) (;W[hh];B[ej];W[dj]C[WELL DONE!RIGHT]) (;W[ck];B[ej] (;W[fk];B[dl]C[black escapes]) (;W[dl];B[fk]) (;W[hh];B[fk]))) (;W[ej];B[dj]C[black escapes]) (;W[cj];B[dj]C[black escapes]) (;W[hh];B[dj]C[black escapes]) (;W[ck];B[dj]C[black escapes]) (;W[dl];B[dj]C[black escapes]))