[Computer-go] An unusual seki

Hideki Kato hideki_katoh at ybb.ne.jp
Wed Aug 15 15:30:50 PDT 2012


Zen (Tencho no Igo 4 in fact) easily found that Black could win the 
semeai and played T9 instead of the reducing-self-liberty move T7 (after 
exchanging Q8 and K7).

Hideki

Nick Wedd: <502BC935.1030402 at maproom.co.uk>:
>Yesterday, a KGS game between Blubbel 3d and AyaBot4 2k, SGF file
>below, ended with an unusual kind of seki.  AyaBot4 marked its
>opponent's stones in the seki as dead, and was eventually booted
>by an admin for mis-marking stones (as a way of getting the game
>to end).  As all eleven AyaBots use the same IP address, they all
>got booted - and an hour later, all simultaneously tried to log in again.
>
>I mention this, both to explain to Hiroshi what happened to his
>bots, and because it is an interesting seki, of I type I had never
>seen before.
>
>Nick
>
>
>(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
>RU[Chinese]SZ[19]HA[5]KM[0.50]TM[600]OT[5x30 byo-yomi]
>PW[Blubbel]PB[AyaBot4]WR[3d]BR[2k]DT[2012-08-14]PC[The KGS Go Server at 
>http://www.gokgs.com/]C[AyaBot4 [2k\]: GTP Engine for AyaBot4 (black): 
>Aya version 7.42e : If you pass, AyaMC will pass. When AyaMC does not, 
>please remove all dead stones.
>]
>;B[dd]BL[599.599]
>;B[pd]BL[599.278]
>;B[jj]BL[598.935]
>;B[dp]BL[598.654]
>;B[pp]BL[598.306]
>;W[qn]WL[599.421]
>;B[np]BL[596.887]
>;W[qk]WL[598.258]
>;B[ip]BL[595.687]
>;W[lp]WL[596.32]
>;B[kp]BL[594.405]
>;W[lo]WL[594.002]
>;B[lq]BL[593.188]
>;W[mq]WL[592.372]
>;B[mp]BL[592.019]
>;W[kq]WL[590.811]
>;B[lr]BL[591.069]
>;W[jp]WL[585.719]
>;B[ko]BL[589.498]
>;W[jq]WL[576.457]
>;B[jo]BL[588.011]
>;W[mr]WL[573.518]
>;B[ln]BL[586.867]
>;W[mo]WL[572.06]
>;B[mn]BL[585.458]
>;W[no]WL[570.908]
>;B[pn]BL[584.089]
>;W[oo]WL[567.413]
>;B[nn]BL[582.669]
>;W[on]WL[560.432]
>;B[om]BL[581.529]
>;W[po]WL[558.796]
>;B[kr]BL[580.282]
>;W[jr]WL[555.794]
>;B[pm]BL[578.814]
>;W[qp]WL[548.661]
>;B[qm]BL[577.793]
>;W[qh]WL[544.178]
>;B[qf]BL[576.209]
>;W[io]WL[542.633]
>;B[op]BL[574.787]
>;W[qo]WL[540.749]
>;B[rn]BL[573.321]
>;W[ro]WL[538.87]
>;B[ok]BL[572.134]
>;W[in]WL[536.543]
>;B[jm]BL[570.967]
>;W[im]WL[534.421]
>;B[il]BL[569.256]
>;W[jl]WL[531.868]
>;B[kl]BL[568.191]
>;W[jn]WL[530.255]
>;B[kn]BL[566.682]
>;W[km]WL[529.03]
>;B[ll]BL[565.35]
>;W[oh]WL[521.982]
>;B[nh]BL[563.782]
>;W[og]WL[517.447]
>;B[oi]BL[562.486]
>;W[ng]WL[515.359]
>;B[mg]BL[560.699]
>;W[ni]WL[492.114]
>;B[mh]BL[559.487]
>;W[oj]WL[491.532]
>;B[nj]BL[557.992]
>;W[pi]WL[488.699]
>;B[mi]BL[556.682]
>;W[ik]WL[483.385]
>;B[hl]BL[555.199]
>;W[jk]WL[482.036]
>;B[ij]BL[553.922]
>;W[hk]WL[480.04]
>;B[gl]BL[552.906]
>;W[gk]WL[478.407]
>;B[fk]BL[551.907]
>;W[fl]WL[477.029]
>;B[el]BL[550.55]
>;W[fm]WL[475.577]
>;B[em]BL[549.052]
>;W[ek]WL[471.261]
>;B[dk]BL[547.847]
>;W[fj]WL[469.645]
>;B[dj]BL[546.643]
>;W[dq]WL[460.631]
>;B[cq]BL[545.725]
>;W[eq]WL[459.109]
>;B[ep]BL[544.085]
>;W[cr]WL[457.3]
>;B[fp]BL[542.883]
>;W[bq]WL[455.966]
>;B[cp]BL[541.802]
>;W[bp]WL[454.973]
>;B[bo]BL[540.752]
>;W[gr]WL[452.575]
>;B[fn]BL[539.465]
>;W[gn]WL[448.989]
>;B[hp]BL[537.808]
>;W[cf]WL[440.015]
>;B[fc]BL[536.774]
>;W[bd]WL[436.824]
>;B[cc]BL[535.065]
>;W[ci]WL[435.404]
>;B[di]BL[534.013]
>;W[bj]WL[432.975]
>;B[gi]BL[532.818]
>;W[fi]WL[416.985]
>;B[fh]BL[531.688]
>;W[gh]WL[416.032]
>;B[hi]BL[530.258]
>;W[eh]WL[415.031]
>;B[fg]BL[529.417]
>;W[ei]WL[414.198]
>;B[dh]BL[528.432]
>;W[eg]WL[412.854]
>;B[gg]BL[527.023]
>;W[ef]WL[409.783]
>;B[cg]BL[525.867]
>;W[bg]WL[408.034]
>;B[bf]BL[524.529]
>;W[bh]WL[403.186]
>;B[ce]BL[522.728]
>;W[df]WL[401.938]
>;B[be]BL[521.808]
>;W[cl]WL[398.665]
>;B[dl]BL[520.422]
>;W[cm]WL[396.907]
>;B[dn]BL[519.207]
>;W[fo]WL[395.097]
>;B[en]BL[517.69]
>;W[go]WL[393.291]
>;B[br]BL[516.515]
>;W[ar]WL[390.882]
>;B[dr]BL[515.561]
>;W[bs]WL[389.785]
>;B[fq]BL[514.28]
>;W[er]WL[388.674]
>;B[fr]BL[513.124]
>;W[ds]WL[387.87]
>;B[cn]BL[511.635]
>;W[gf]WL[375.574]
>;B[bm]BL[510.575]
>;W[bl]WL[373.001]
>;B[am]BL[509.227]
>;W[ai]WL[370.334]
>;B[ap]BL[508.188]
>;W[hg]WL[366.581]
>;B[hh]BL[507.345]
>;W[ff]WL[365.669]
>;B[gh]BL[506.196]
>;W[hf]WL[364.546]
>;B[jh]BL[505.012]
>;W[nc]WL[360.721]
>;B[nd]BL[503.949]
>;W[pc]WL[357.991]
>;B[qc]BL[502.79]
>;W[od]WL[355.262]
>;B[oe]BL[501.996]
>;W[oc]WL[354.415]
>;B[md]BL[500.741]
>;W[qd]WL[352.886]
>;B[pe]BL[499.497]
>;W[qb]WL[349.04]
>;B[rc]BL[498.683]
>;W[rb]WL[348.013]
>;B[rd]BL[498.045]
>;W[mc]WL[346.436]
>;B[lc]BL[496.798]
>;W[lb]WL[342.547]
>;B[kc]BL[495.94]
>;W[kb]WL[341.515]
>;B[jc]BL[494.859]
>;W[jb]WL[340.477]
>;B[hc]BL[493.773]
>;W[ic]WL[339.257]
>;B[id]BL[492.944]
>;W[ib]WL[338.293]
>;B[jf]BL[491.682]
>;W[hb]WL[335.898]
>;B[gc]BL[490.451]
>;W[gp]WL[332.161]
>;B[gq]BL[489.594]
>;W[ho]WL[328.497]
>;B[hq]BL[488.663]
>;W[ed]WL[318.979]
>;B[hm]BL[487.378]
>;W[ec]WL[311.079]
>;B[fd]BL[486.128]
>;W[db]WL[306.977]
>;B[ee]BL[484.995]
>;W[de]WL[304.243]
>;B[cd]BL[483.928]
>;W[fe]WL[301.373]
>;B[cb]BL[482.932]
>;W[fb]WL[300.273]
>;B[pj]BL[482.07]
>;W[oi]WL[289.406]
>;B[pk]BL[481.069]
>;W[qj]WL[287.968]
>;B[rl]BL[480.173]
>;W[rg]WL[283.271]
>;B[ri]BL[479.029]
>;W[rk]WL[275.974]
>;B[pg]BL[477.947]
>;W[rf]WL[270.285]
>;B[re]BL[477.137]
>;W[ne]WL[266.608]
>;B[si]BL[476.159]
>;W[of]WL[262.968]
>;B[qi]BL[474.813]
>;W[pf]WL[249.576]
>;B[qe]BL[473.974]
>;W[qg]WL[247.622]
>;B[sf]BL[472.933]
>;W[se]WL[239.677]
>;B[sd]BL[471.819]
>;W[sh]WL[236.271]
>;B[rh]BL[470.766]
>;W[sj]WL[230.812]
>;B[sg]BL[469.929]
>;W[ph]WL[229.406]
>;B[ql]BL[469.325]
>;W[mf]WL[218.345]
>;B[ld]BL[468.416]
>;W[mj]WL[216.358]
>;B[nk]BL[467.321]
>;W[kf]WL[215.548]
>;B[kg]BL[466.438]
>;W[lg]WL[203.023]
>;B[lh]BL[465.742]
>;W[lf]WL[199.749]
>;B[je]BL[464.829]
>;W[ki]WL[195.301]
>;B[kh]BL[463.915]
>;W[bb]WL[187.03]
>;B[ba]BL[462.807]
>;W[hr]WL[180.697]
>;B[ir]BL[461.859]
>;W[ks]WL[175.853]
>;B[is]BL[460.556]
>;W[kk]WL[170.667]
>;B[lj]BL[459.258]
>;W[kj]WL[167.172]
>;B[ig]BL[458.371]
>;W[sn]WL[161.129]
>;B[sl]BL[457.498]
>;W[da]WL[141.864]
>;B[ca]BL[456.265]
>;W[hd]WL[138.08]
>;B[he]BL[455.64]
>;W[ge]WL[134.377]
>;B[gd]BL[455.014]
>;W[gb]WL[133.418]
>;B[hd]BL[454.396]
>;W[if]WL[132.188]
>;B[iq]BL[453.561]
>;W[ls]WL[128.83]
>;B[lk]BL[452.66]
>;W[ji]WL[122.634]
>;B[ii]BL[452.007]
>;W[jd]WL[113.621]
>;B[ie]BL[450.954]
>;W[li]WL[107.351]
>;B[ih]BL[450.032]
>;W[ke]WL[100.091]
>;B[kd]BL[449.426]
>;W[lm]WL[94.731]
>;B[nm]BL[448.706]
>;W[ml]WL[92.034]
>;B[mk]BL[448.065]
>;W[mm]WL[90.273]
>;B[fs]BL[447.205]
>;W[es]WL[87.396]
>;B[rm]BL[446.128]
>;W[nl]WL[82.344]
>;B[sb]BL[445.355]
>;W[ol]WL[80.245]
>;B[ag]BL[444.26]
>;W[ra]WL[75.323]
>;B[ch]BL[443.3]
>;W[cj]WL[72.378]
>;B[al]BL[442.403]
>;W[ak]WL[70.849]
>;B[ck]BL[441.264]
>;W[bk]WL[69.86]
>;B[dc]BL[440.587]
>;W[ah]WL[67.088]
>;B[ae]BL[439.879]
>;W[af]WL[60.155]
>;B[bc]BL[439.062]
>;W[eo]WL[52.911]
>;B[do]BL[438.337]
>;W[ej]WL[45.856]
>;B[gj]BL[437.658]
>;W[pb]WL[38.279]
>;B[dm]BL[436.922]
>;W[ag]WL[32.972]
>;B[dg]BL[436.278]
>;W[aq]WL[30.263]
>;B[ao]BL[435.619]
>;W[js]WL[29.115]
>;B[ab]BL[434.626]
>;W[sa]WL[27.09]
>;B[sc]BL[433.797]
>;W[so]WL[23.959]
>;B[sm]BL[432.924]
>;W[jm]WL[17.358]
>;B[pl]BL[432.229]
>;W[hj]WL[3.861]
>;B[lq]BL[431.429]
>;W[lr]WL[1.668]
>;B[qq]BL[430.674]
>;W[rq]WL[30]OW[5]
>;B[sp]BL[429.788]
>;W[qr]WL[30]OW[5]
>;B[nr]BL[428.871]
>;W[pq]WL[30]OW[5]
>;B[nq]BL[428.1]
>(;W[me]WL[30]OW[5]
>;B[ac]BL[427.303]
>;W[nf]WL[30]OW[5]
>;B[gs]BL[426.632]
>;W[]WL[30]OW[5]
>;B[se]BL[425.863]
>;W[]WL[30]OW[5]
>;B[jd]BL[425.075]
>;W[]WL[30]OW[5]
>;B[mj]BL[424.25]
>;W[]WL[30]OW[5]
>;B[jg]BL[423.532]
>;W[]WL[30]OW[5]
>;B[sh]BL[422.716]
>;W[]WL[30]OW[5]
>;B[hs]BL[421.857]
>;W[]WL[30]OW[5]
>;B[ad]BL[421.223]
>;W[]WL[30]OW[5]
>;B[aa]BL[420.329]
>;W[]WL[30]OW[5]
>;B[bn]BL[419.603]
>;W[]WL[30]OW[5]
>;B[ps]BL[418.821]
>;W[qs]WL[30]OW[5]
>;B[hr]BL[418.008]
>;W[]WL[30]OW[5]
>;B[mb]BL[417.115]
>;W[nb]WL[30]OW[5]
>;B[oa]BL[416.353]
>;W[ma]WL[30]OW[5]
>;B[eb]BL[415.73]
>;W[ea]WL[30]OW[5]
>;B[ga]BL[414.872]
>;W[fa]WL[30]OW[5]
>;B[sr]BL[414.112]
>;W[sq]WL[30]OW[5]
>;B[rs]BL[413.454]
>;W[rr]WL[30]OW[5]
>;B[pr]BL[412.687]
>;W[or]WL[30]OW[5]
>;B[ns]BL[412.117]
>;W[os]WL[30]OW[5]
>;B[ms]BL[411.561]
>;W[oq]WL[30]OW[5]
>;B[np]BL[410.873]
>;W[ss]WL[30]OW[5]
>;B[nr]BL[410.247]
>;W[nq]WL[30]OW[5]
>;B[op]BL[409.601]
>;W[ns]WL[30]OW[5]
>;B[ka]BL[408.981]
>;W[ja]WL[30]OW[5]
>;B[ha]BL[408.452]
>;W[ia]WL[30]OW[5]
>;B[na]BL[407.777]
>;W[pa]WL[30]OW[5]
>;B[gm]BL[407.053]
>;W[hn]WL[30]OW[5]
>;B[hl]BL[406.531]
>;W[gl]WL[30]OW[5]
>;B[hm]BL[405.876]
>;W[gm]WL[30]OW[5]
>;B[mp]BL[405.157]
>;W[pp]WL[30]OW[5]
>;B[np]BL[404.5]
>;W[op]WL[30]OW[5]
>;B[ga]BL[403.96]
>;W[ha]WL[30]OW[5]
>;B[]BL[403.958]
>(;W[ob]WL[30]OW[5]
>;B[oa]BL[403.469]
>;W[na]WL[30]OW[5]
>;B[]BL[403.468]
>(;W[rp]WL[30]OW[5]
>;B[pr]BL[402.879]
>;W[ps]WL[30]OW[5]
>;B[]BL[402.877]
>;W[mp]WL[30]OW[5]
>;B[]BL[402.876]
>;W[la]WL[30]OW[5]
>;B[]BL[402.876]
>;W[il]WL[30]OW[5]
>;B[hl]BL[400.542]
>;W[hm]WL[30]OW[5]
>;B[]BL[400.541]
>(;W[]WL[30]OW[5]TW[ga][ka][oa][qa][eb][mb][ee][bi][aj][fk][hl][np][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][rs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][co][gr])
>(;W[]WL[30]OW[5]TW[ga][ka][oa][qa][eb][mb][ee][bi][aj][fk][hl][np][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][rs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][co][gr])
>(;W[]WL[30]OW[5]TW[ga][ka][oa][qa][eb][mb][ee][bi][aj][fk][hl][np][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][rs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][co][gr])
>(;W[]WL[30]OW[5]TW[ga][ka][oa][qa][eb][mb][ee][bi][aj][fk][hl][np][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][rs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][co][gr])
>(;W[]WL[30]OW[5]TW[ga][ka][oa][qa][eb][mb][sb][fc][gc][hc][jc][kc][lc][qc][rc][sc][fd][gd][hd][id][jd][kd][ld][md][nd][pd][qd][rd][sd][ee][he][ie][je][ke][le][me][ne][oe][pe][qe][re][se][jf][kf][lf][mf][nf][of][pf][qf][rf][sf][fg][gg][ig][jg][kg][lg][mg][ng][og][pg][qg][rg][sg][fh][gh][hh][ih][jh][kh][lh][mh][nh][oh][ph][qh][rh][sh][bi][gi][hi][ii][mi][ni][oi][pi][qi][ri][si][aj][gj][ij][jj][lj][mj][nj][oj][pj][qj][rj][sj][fk][lk][mk][nk][ok][pk][qk][rk][sk][hl][kl][ll][pl][ql][rl][sl][nm][om][pm][qm][rm][sm][kn][ln][mn][nn][pn][rn][jo][ko][kp][np][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][rs]TB[bb][bd][an][co][gr]C[AyaBot4 
>[2k\]: You and the engine seem to disagree about which stones are dead. 
>To solve this problem, you can press "undo", play until all dead stones 
>are removed from the board, then score again.
>]))
>(;W[]WL[30]OW[5]TW[ga][ka][la][oa][qa][eb][mb][ee][bi][aj][fk][hl][il][hm][br][dr][as][cs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][on][qn][sn][co][lo][mo][no][oo][po][qo][ro][so][jp][lp][mp][op][pp][qp][rp][jq][kq][lq][mq][nq][oq][pq][qq][rq][sq][gr][jr][kr][lr][mr][nr][or][pr][qr][rr][sr][js][ks][ls][ms][ns][os][ps][qs][rs][ss]C[AyaBot4 
>[2k\]: You and the engine seem to disagree about which stones are dead. 
>To solve this problem, you can press "undo", play until all dead stones 
>are removed from the board, then score again.
>Blubbel [3d\]: SEKI
>]))
>(;W[]WL[30]OW[5]TW[ga][ka][la][na][oa][qa][eb][mb][ob][ee][bi][aj][fk][hl][il][hm][mp][np][rp][sp][lq][qq][br][dr][kr][nr][pr][sr][as][cs][ms][ps][rs]TB[bb][bd][qd][ke][le][me][ne][kf][lf][mf][nf][of][pf][rf][lg][ng][og][pg][qg][rg][oh][ph][qh][ni][oi][pi][oj][qj][rj][sj][qk][rk][sk][an][co][gr]C[Blubbel 
>[3d\]: why doesn't it see the seki?
>Blubbel [3d\]: fuck...
>AyaBot4 [2k\]: You and the engine seem to disagree about which stones 
>are dead. To solve this problem, you can press "undo", play until all 
>dead stones are removed from the board, then score again.
>]))
>(;W[]WL[30]OW[5]
>;B[]BL[428.099]TW[ea][fa][ga][ha][ia][ja][ka][la][ma][na][oa][pa][qa][eb][mb][nb][ob][ee][bi][aj][fk][gl][hl][il][gm][hm][hn][mp][np][op][pp][rp][sp][lq][nq][oq][qq][sq][br][dr][kr][nr][or][pr][rr][sr][as][cs][ms][ns][os][ps][qs][rs][ss]TB[aa][bb][ac][ad][bd][jd][qd][ke][le][me][ne][se][kf][lf][mf][nf][of][pf][rf][jg][lg][ng][og][pg][qg][rg][oh][ph][qh][sh][ni][oi][pi][mj][oj][qj][rj][sj][qk][rk][sk][an][bn][co][gr][hr][gs][hs]))
-- 
Hideki Kato <mailto:hideki_katoh at ybb.ne.jp>



More information about the Computer-go mailing list