(;AB[ab]AB[bb]AW[ca]AB[db]AB[dc]AB[ec]AB[cc]AB[dd]AW[eb]AW[fb]AW[fc]AW[fd]AW[ed]AW[de]AW[ce]AW[bc]AW[ac]AB[be]AB[cf]AB[cg]AB[df]AW[ef]AW[ff]AW[gd]AW[gf]AW[bg]AW[bh]AB[ch]AB[da]AW[ea]AW[ci]AB[eh]AW[fg]AW[di]AW[fh]AW[dh]AB[eg]AB[fi]AB[gi]AB[gh]AB[gg]AB[bi]AB[bj]AB[cj]AB[bd]AP[goproblems]
(;W[ee];B[bf])
(;W[bf];B[ei];W[dg]C[Useful points and improved positionRIGHT])
(;W[cb];B[cd]
(;W[ee];B[bf])
(;W[ba];B[aa]
(;W[bf];B[ee])
(;W[ee];B[bf]))
(;W[bf];B[ee]))
(;W[ba];B[bf])
(;W[cd];B[ee])
(;W[ad];B[bf])
(;W[dg];B[bf]C[Not nearly as good])
(;W[ei];B[bf]C[Not nearly as good]))