(;AB[dc]AW[cc]AW[bd]AW[dd]AW[de]AW[dh]AW[ci]AW[jc]AW[ie]AW[if]AW[hf]AW[gf]AB[ff]AB[ge]AB[he]AB[hc]AB[ec]AB[cg]AB[oc]AB[qd]AW[cp]AB[bo]AB[dn]AB[ep]AB[er]AW[pp]C[]LB[ef:A]LB[fg:B]LB[qn:C]AP[goproblems] (;B[fg]C[According to Kanada Ei 9-dan black must extend here.RIGHT];W[dg];B[jb];W[kb];B[kc]C[According to the pressrooom this crosscut would have been an effective strategy.RIGHT]) (;B[ef];W[df];B[fh];W[eh];B[qn]C[In the game black got sente but got a very unpleasant shape.]) (;B[qn]C[This move was not even mentioned but it must be too crazy.]))