[Computer-go] An unusual seki

Nick Wedd nick at maproom.co.uk
Wed Aug 15 09:07:17 PDT 2012


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]))

-- 
Nick Wedd
nick at maproom.co.uk



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