(;AP[goproblems]AB[ar]AW[br]AW[cq]AW[dr]AW[cs]AB[bq]AB[bp]AB[cp]AB[co]AB[do]AB[eo]AB[fo]AW[dp]AW[ep]AW[fp]AB[gp]AB[gq]C[black first to kill](;B[fq];W[er]C[this is a tesuji];B[eq];W[dq]C[White Lives];B[bs]C[Ko( Not the best)])(;B[dq];W[eq]C[white lives])(;B[eq];W[er]C[this is a tesuji];B[fq];W[dq]C[white lives];B[bs]C[ko (not the best)])(;B[er](;W[eq]C[CHOICE](;B[fr]C[good!RIGHT])(;B[fq]C[RIGHT];W[dq]C[RIGHT](;B[fr]C[RIGHT])(;B[es]C[RIGHT])(;B[fs]C[RIGHT]))(;B[es];W[dq](;B[gr]C[RIGHT])(;B[fs]C[RIGHT])(;B[gs]C[RIGHT])))(;W[fr]C[strongest moveCHOICE](;B[fq]C[Excellent!RIGHT])(;B[eq];W[fq])(;B[gr];W[eq])(;B[es];W[fq])(;B[fs];W[eq]))(;W[dq]C[CHOICE](;B[fr]C[Well Done!RIGHT])(;B[fq]C[RIGHT])(;B[es]C[RIGHT])(;B[eq]C[RIGHT])(;B[fs]C[RIGHT])(;B[gr]C[RIGHT])))(;B[fr];W[er](;B[es];W[fq])(;B[eq];W[dq](;B[es];W[fq])(;B[fq];W[es]))))