(;AB[qa]AB[qb]AB[rb]AB[pb]AB[qc]AB[sc]AB[pd]AW[pc]AW[oc]AW[nc]AW[ob]AW[md]AW[rd]AW[rc]AW[qd]AW[re]AB[qe]AB[pe]AB[qf]AB[rf]AB[rg]AB[rh]AW[ri]AW[qh]AW[qi]AW[qj]AW[qk]AW[rl]AW[rm]AW[qm]AW[sm]AW[so]AW[sn]AB[rn]AB[qn]AB[qo]AB[qp]AB[rp]AB[sp]AB[pq]AB[pr]AB[qr]AB[rs]AB[sr]AW[rq]AW[qq]AW[rr]AW[pp]AW[po]AW[pn]AW[oo]AW[no]AW[np]AW[nq]AW[oq]AW[lp]AW[lo]AB[mo]AB[mn]AB[nn]AB[on]AB[om]AB[pm]AB[ql]AB[pk]AB[ol]AB[ok]AB[oj]AW[pj]AB[pi]AB[oi]AB[oh]AW[pg]AW[pf]AW[og]AW[nf]AB[ng]AB[nh]AB[mg]AB[mf]AW[ne]AB[le]AB[ke]AB[lc]AB[jc]AW[je]AW[kg]AW[dd]AW[dp]AB[fq]AB[ip]AB[kp]AB[lq]AB[mq]AW[mp]AB[nr]AB[or]AW[ln]AW[jn]AW[nm]AB[mm]AB[ll]AW[jl]AW[kl]AW[ij]AB[kk]AB[kj]AW[lk]AW[mk]AW[ki]AW[mi]AW[ni]AW[cn]TR[cn]C[White tenukis on the left instead of defending, can black slay his dragon? play at T if white is alive unconditionally, otherwise kill it!]AB[sk]AW[sj]LB[cf:T]MA[qi]MA[pg]MA[nf]MA[ne]MA[md]MA[nc]MA[oc]MA[ob]MA[pc]MA[qh]MA[og]MA[pf]MA[qj]MA[pj]MA[qk]MA[ri]MA[sj]MA[rl]MA[rm]MA[qm]MA[sm]MA[sn]MA[so]AP[goproblems] (;B[oe];W[of] (;B[rk] (;W[mb] (;B[oa];W[na] (;B[mc];W[lb] (;B[la];W[kb];B[ka];W[jb]) (;B[kb];W[la])) (;B[lb];W[mc];B[la]) (;B[pa];W[mc])) (;B[na];W[oa] (;B[lb];W[ma]) (;B[ma];W[lb];B[kb];W[la])) (;B[ma];W[na];B[lb]) (;B[mc];W[oa] (;B[nd];W[od]) (;B[ma];W[lb];B[kb];W[la]) (;B[lb];W[ma])) (;B[ph];W[qg];B[mc]) (;B[lb];W[na];B[mc];W[oa])) (;W[mc]C[This is a mistake on whites part];B[mb];W[od];B[me]C[White dies, but black got lucky.])) (;B[mb];W[rk]C[White Lives])) (;B[cf]LB[cf:T]C[Whites dragon might live, but perhaps black can get some ko threats from it.RIGHT]) (;B[rk];W[mb] (;B[oe];W[of] (;B[oa];W[na] (;B[mc];W[lb] (;B[la];W[kb];B[ka];W[jb]) (;B[kb];W[la])) (;B[lb];W[mc];B[la]) (;B[pa];W[mc])) (;B[na];W[oa] (;B[lb];W[ma]) (;B[ma];W[lb];B[kb];W[la])) (;B[ma];W[na];B[lb]) (;B[mc];W[oa] (;B[nd];W[od]) (;B[ma];W[lb];B[kb];W[la]) (;B[lb];W[ma])) (;B[ph];W[qg];B[mc]) (;B[lb];W[na];B[mc];W[oa])) (;B[oa];W[na] (;B[mc];W[lb];B[kb];W[la]) (;B[pa];W[mc])) (;B[lb];W[na];B[oa];W[mc]) (;B[na];W[oa])) (;B[mb];W[rk]C[White Lives, and black has one less ko threat.]) (;B[oa];W[rk]C[Subtle, but if white plays right he will see that p19 is sente or death!]))