(;AP[goproblems]AB[cs]AB[cr]AB[cq]AB[er]AB[fr]AB[fq]AB[gq]AB[gs]AB[hs]AB[hr]AW[dr]AW[bs]AW[br]AW[bq]AW[cp]AW[dp]AW[ep]AW[fp]AW[gp]AW[hq]AW[iq]AW[ir]AW[is]TR[cs]TR[cr]TR[cq]C[White to kill Black.](;W[es];B[dq](;W[eq]C[](;B[ds];W[dr]C[CHOICERIGHT])(;B[fs];W[ds]C[RIGHT]))(;W[ds];B[fs])(;W[fs];B[ds]))(;W[dq];B[es])(;W[ds];B[es])(;W[eq];B[es])(;W[fs];B[es]))