(;AP[goproblems]AB[bb]AB[bc]AB[cc]AB[cd]AB[ce]AB[cg]AB[df]AB[fg]AB[gf]AB[ge]AB[gd]AB[fb]AB[gb]AB[hb]AB[ib]AW[cb]AW[db]AW[dc]AW[de]AW[ee]AW[fe]AW[fc]AW[gc]AW[hc]AW[ic]AW[ie]TR[cb]TR[db]TR[dc]C[Black to take marked stones](;B[ec](;W[eb](;B[ed];W[fd];B[dd]C[RIGHT])(;B[dd];W[ed])(;B[fd];W[ed])(;B[ea];W[ed])(;B[ca];W[ed]))(;W[ed](;B[eb];W[fd];B[dd]C[RIGHT])(;B[dd];W[eb])(;B[fd];W[eb])))(;B[eb];W[ec])(;B[dd];W[ed](;B[ec];W[eb])(;B[eb];W[ec]))(;B[fd];W[ed](;B[ec];W[eb])(;B[eb];W[ec]))(;B[ed];W[ec])(;B[ef];W[eb])(;B[ff];W[eb]))