(;AB[fs]AB[fr]AB[er]AB[dq]AB[dp]AB[hs]AB[ir]AB[hq]AB[jq]AB[jp]AB[ko]AB[kn]AB[kl]AB[jl]AB[im]AB[hm]AB[hl]AB[gl]AB[fm]AB[em]AB[dn]AB[do]AW[dm]AW[el]AW[fl]AW[gk]AW[hk]AW[ik]AW[il]AW[jk]AW[kk]AW[ll]AW[lm]AB[km]AW[ln]AW[lo]AW[kp]AW[kq]AW[kr]AW[jr]AW[js]AW[is]AW[dr]AW[ds]AW[es]AW[cq]AW[br]AW[cl]AW[cn]AW[co]AW[jo]AW[io]TR[io]AW[cp]C[White attacked at j5. What is the best way to defend?]AB[lk]AB[mk]AB[nm]AB[no]AB[nq]AB[ns]AW[mp]AB[np]AP[goproblems]
(;B[in];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[jm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[hp];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en]
(;B[fo];W[fn])
(;B[fn];W[fo];B[eo];W[gn];B[en];W[eq]))
(;B[fo];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[fp]C[];W[fo]C[very good! This is the only move for black. Let's see what's coming....]
(;B[en];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp]
(;B[fq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[ep];B[eq];W[gn]
(;B[go];W[ho];B[eo]C[RIGHT])
(;B[eo];W[fn]))
(;B[eq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[gn]
(;B[eo];W[fq])
(;B[fn];W[fq];B[go]C[RIGHT])
(;B[go];W[eo];B[fn]C[RIGHT]))
(;B[ep];W[fq];B[eq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[gn]))
(;B[go];W[jm];B[jn];W[in];B[jm];W[gn]
(;B[gm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gp]
(;B[hn];W[ho];B[en];W[gr];B[gs];W[eq])
(;B[gr];W[fq]
(;B[eq];W[ep]
(;B[hn];W[ho];B[en];W[fn])
(;B[eo];W[hn];B[fp];W[ho];B[en];W[ep]C[ko]))
(;B[hn];W[ho]
(;B[en];W[eq])
(;B[ep];W[en]))
(;B[ep];W[en]))
(;B[en];W[gr];B[gs];W[eq])
(;B[fq];W[ho]
(;B[en];W[gr];B[gs];W[ep];B[eq];W[eo])
(;B[gr];W[en]))
(;B[eq];W[fq]
(;B[eo];W[ep];B[gr];W[hn];B[fp];W[ho];B[en];W[ep]C[ko])
(;B[ep];W[en];B[eo];W[gr]))
(;B[fn];W[gr];B[gs];W[eq]))
(;B[hn];W[ho];B[gm];W[en])
(;B[fn];W[hn]))
(;B[gm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp];B[eq];W[in];B[jm];W[en]
(;B[fn];W[go];B[eo];W[fq]
(;B[hn];W[ho]
(;B[gn];W[ep]C[ko])
(;B[en];W[ep]C[ko]))
(;B[ho];W[hn]
(;B[gn];W[ep])
(;B[en];W[gn])))
(;B[eo];W[fq];B[fn];W[go]
(;B[hn];W[ho]
(;B[gn];W[ep]C[ko])
(;B[en];W[ep]C[ko]))
(;B[ho];W[hn]
(;B[gn];W[ep])
(;B[en];W[gn]))))
(;B[jm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp]
(;B[eq];W[en]
(;B[go];W[gn])
(;B[ho];W[hn];B[fn];W[eo])
(;B[gn];W[go]
(;B[eo];W[fn];B[gm];W[hn])
(;B[fn];W[eo];B[hn];W[ep]))
(;B[fn];W[gn]
(;B[eo];W[gm];B[go];W[hn])
(;B[gm];W[eo]))
(;B[eo];W[fn]
(;B[gm];W[fq])
(;B[go];W[gn])
(;B[gn];W[go];B[gm];W[hn])))
(;B[fq];W[ep];B[eq];W[en]))
(;B[gn];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp]
(;B[eq]C[You refuted white's bluff well.RIGHT])
(;B[fq];W[ep];B[eq];W[en])
(;B[ep];W[fq];B[eq];W[en]))
(;B[fn];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp]
(;B[eq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[gn];B[en];W[fq];B[go]C[RIGHT])
(;B[fq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[gn];B[en];W[ep])
(;B[ep];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[gn];B[en];W[fq]))
(;B[hp];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en])
(;B[eo];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gn]
(;B[en];W[eq];B[fq];W[gp];B[ep];W[fn])
(;B[go];W[eq];B[fq];W[fn]))
(;B[ho];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[hp]
(;B[iq];W[en])
(;B[gn];W[go];B[en];W[iq])
(;B[en];W[iq]))
(;B[hn];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[gp]
(;B[fq];W[ep];B[eq];W[en])
(;B[eq]C[RIGHT])
(;B[ep];W[fq])
(;B[en];W[eq])))
(;B[eq]C[];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en];B[fn];W[fo];B[eo];W[gn];B[en];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[fq]C[thanks to blyx])
(;B[en];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[gn];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[gm];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[fq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en];B[fn];W[fo];B[eo];W[gn];B[en];W[eq];B[ep];W[fp];B[eq];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr])
(;B[ep];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en];B[fn];W[fo];B[eo];W[gn];B[en];W[fp];B[eq];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr])
(;B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[iq];W[jm];B[jn];W[in];B[jm];W[gn];B[gm];W[en];B[fn];W[fo];B[eo];W[hn];B[en];W[eq])
(;B[gp];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en];B[fn];W[fo];B[eo];W[gn];B[en];W[eq])
(;B[fn];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq])
(;B[ho];W[hp]
(;B[iq];W[jm];B[jn];W[in];B[jm];W[hn];B[gm];W[en]
(;B[fn];W[fo];B[eo];W[gn];B[en];W[eq])
(;B[gn];W[go])
(;B[go];W[gn]))
(;B[gp];W[ip];B[iq];W[gq];B[hr];W[go]
(;B[fp];W[hn]
(;B[en];W[jm];B[jn];W[in])
(;B[jm];W[en];B[fn];W[fo];B[eo];W[fq]
(;B[ep];W[gr])
(;B[gr];W[ep]
(;B[fp];W[gn]
(;B[eq];W[gm])
(;B[gm];W[gp];B[eq];W[in]C[a very bad ko for black]))
(;B[gm];W[eq]))
(;B[eq];W[ep]
(;B[fp];W[gr];B[gs];W[gp])
(;B[gr];W[fp])))
(;B[in];W[jn])
(;B[gm];W[jm];B[jn];W[in];B[jm];W[en];B[fn];W[fo];B[eo];W[fq]
(;B[ep];W[gr])
(;B[eq];W[ep];B[fp];W[gn];B[en];W[gr])
(;B[gr];W[ep];B[fp];W[gn]))
(;B[gn];W[in]
(;B[fo];W[jm])
(;B[jm];W[fn]))
(;B[fq];W[jm])
(;B[fo];W[jm];B[jn];W[in]))
(;B[hn];W[gr];B[gs];W[fp];B[eq];W[en]
(;B[fn];W[eo])
(;B[eo];W[fn];B[fo];W[gn]))))
(;B[go];W[iq];B[ip];W[hp];B[iq];W[gq];B[hr];W[gr];B[gs];W[eq]))