(;SZ[19]AW[ar][br][bs][cq][dq][dr][cp][co][do][eo][fo][go][gq][fq][eq][ho][hp][hq][as]AB[aq][bp][bo][bn][cn][dn][en][fn][gn][hn][hr][gr][fr][er][ds][in][io][ip][iq][ir][ep][ap][is][bq]C[I assumed that there are no ko threats here. Black to kill.](;B[fp]C[FORCE](;W[es](;B[cs]C[FORCE];W[cr](;B[ds]C[[RIGHT\] Well done;)])(;B[cs]C[FORCE];W[ds]C[WRONG]))(;B[cr]C[FORCE];W[cs];B[fs]C[FORCE];W[ds]C[WRONG])(;B[fs]C[FORCE];W[cs](;B[es]C[[RIGHT\] Well done;)])(;B[cr]C[[RIGHT\] Well done;)]))(;B[gs]C[FORCE];W[cs];B[fs]C[FORCE];W[ds]C[WRONG]))(;W[cs](;B[es]C[[RIGHT\] Well done;)])(;B[cr]C[[RIGHT\] Well done;)])(;B[fs]C[FORCE];W[es]C[WRONG])))(;B[gp]C[FORCE];W[fp]C[WRONG]))