(;AW[rr]AW[qp]AW[ro]AW[pp]AW[oq]AW[or]AW[np]AW[oo]AB[pr]AB[qs]AB[os]AB[ns]AB[nr]AW[op]AB[mp]AB[mo]AB[nn]AB[on]AB[mq]AB[po]AB[qo]AW[sn]AW[rm]AW[rl]AW[sl]AB[mr]AB[mn]AB[qn]AB[rn]AB[qm]AB[pm]AW[sj]AB[ri]AB[qi]AB[rq]C[Looks easy but be careful: white to live.]AB[si]AW[rj]AW[rk]AB[pj]AB[pk]AP[goproblems] (;W[qq];B[qr] (;W[sr]C[Tesuji - you live!RIGHT]) (;W[sq];B[sr] (;W[ss];B[rs];W[rp];B[sr]C[Ko for life!]) (;W[rp];B[rs] (;W[ss];B[so];W[sp];B[sr]C[Only ko!]) (;W[so];B[rq]C[Ko for life.]))) (;W[rp];B[sr];W[sq];B[rs];W[ss];B[so];W[sp];B[sr]C[Only ko for life!]) (;W[sp];B[sr]) (;W[rs];B[sr])) (;W[qr];B[qq];W[pq];B[sr]C[Only ko.]) (;W[rp];B[qq];W[sq];B[rs]))