I think it's safe to say that all Go players have, at some time or another, experienced a "bad beat", a poker terminology for a situation where a person who has a vastly superior hand over his opponent(s) loses anyways, despite the odds. So the analogous situation for Go is where a person who has a vastly superior position/major lead over his opponent loses anyways. These kind of games also tend to be more memorable than others (0.5 points come a close second?).
So what are some of your bad beat stories? If it was played online, be sure to post the SGF if you still have it!
I'll start with a recent one (less than a few weeks ago). I was playing an online game against aguilar1 (Fernando Aguilar) in a 0.5 komi game where I took Black on one of my 5d accounts.
Up to move 88 things were looking okay for me and I was holding up on my own. I didn't make any major mistakes, but did play a few slack moves here and there so I was behind by a teeny bit. Sirens went off on my 88th move though, which I played on the last second of my byoyomi period. It went from this:
$$c Move 88
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X . . X . |
$$ | . . O , . . . . . , . . . . . , X O . |
$$ | . . O X . . . . . . X X X . . . . O . |
$$ | . . X X . . . O X X O O O X . . O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O . . . . . . . |
$$ | . . . . . . . . . O . X . . . . O . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . O . X . . . O . . . |
$$ | . . . X . . O . . . . . . . . . . . . |
$$ | . . . . . . . . O O . X . . . B . . . |
$$ | . . . . . . . X X O . . . . . O . . . |
$$ | . . . . . X X X O X X . . . . . . . . |
$$ | . X X X X X O O O O X . . X . O . . . |
$$ | . X O O X O . . . . X . . X O . . . . |
$$ | . O . . O . O . . . . . X O O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$c Move 88
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X . . X . |
$$ | . . O , . . . . . , . . . . . , X O . |
$$ | . . O X . . . . . . X X X . . . . O . |
$$ | . . X X . . . O X X O O O X . . O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O . . . . . . . |
$$ | . . . . . . . . . O . X . . . . O . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . O . X . . . O . . . |
$$ | . . . X . . O . . . . . . . . . . . . |
$$ | . . . . . . . . O O . X . . . B . . . |
$$ | . . . . . . . X X O . . . . . O . . . |
$$ | . . . . . X X X O X X . . . . . . . . |
$$ | . X X X X X O O O O X . . X . O . . . |
$$ | . X O O X O . . . . X . . X O . . . . |
$$ | . O . . O . O . . . . . X O O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
...to this:
$$c Few moves later
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X . . X . |
$$ | . . O , . . . . . , . . . . . , X O . |
$$ | . . O X . . . . . . X X X . . . . O . |
$$ | . . X X . . . O X X O O O X . . O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O . . . . . . . |
$$ | . . . . . . . . . O . X . . . . O . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . O . X . . . O . . . |
$$ | . . . X . . O . . . . . . . . . . . . |
$$ | . . . . . . . . O O . X . . O X O . . |
$$ | . . . . . . . X X O . . . . . O X . . |
$$ | . . . . . X X X O X X . . . . O . W . |
$$ | . X X X X X O O O O X . . X . O . X . |
$$ | . X O O X O . . . . X . . X O . X . . |
$$ | . O . . O . O . . . . . X O O . X O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$c Few moves later
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X . . X . |
$$ | . . O , . . . . . , . . . . . , X O . |
$$ | . . O X . . . . . . X X X . . . . O . |
$$ | . . X X . . . O X X O O O X . . O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O . . . . . . . |
$$ | . . . . . . . . . O . X . . . . O . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . O . X . . . O . . . |
$$ | . . . X . . O . . . . . . . . . . . . |
$$ | . . . . . . . . O O . X . . O X O . . |
$$ | . . . . . . . X X O . . . . . O X . . |
$$ | . . . . . X X X O X X . . . . O . W . |
$$ | . X X X X X O O O O X . . X . O . X . |
$$ | . X O O X O . . . . X . . X O . X . . |
$$ | . O . . O . O . . . . . X O O . X O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
...which had me sink further behind, bad news since endgame is my weakest area. Ah, but that's only the beginning. As we entered endgame, I tried to play more efficiently to try and make up for my losses on the lower right. I was also a bit, again as they say in poker, "on tilt". Needless to say, I neglected an important group and ended up in a situation where my central group was in major danger:
$$c Move 138
$$ ---------------------------------------
$$ | . . . . O X X . . . . . . . . . . . . |
$$ | . . . O . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X X X X . |
$$ | . . O , . . . . . , . . . . . O X O . |
$$ | . O O X . . . . . . X X X . X O O O . |
$$ | . X X X . . . O X X O O O X . X O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O O O X X O . . |
$$ | . . . . . . . . . O . X X X O . O . . |
$$ | . . . X . . . . . , O O O X . , . . . |
$$ | . . . . . . . . . O . X X X . O . . . |
$$ | . . . X . . O . . . W . X O . . . . . |
$$ | . . . . . . . . O O . X X . O X O . . |
$$ | . . . . . . . X X O X X O O . O X . . |
$$ | . . . . . X X X O X X O . . . O . O . |
$$ | . X X X X X O O O O X . O X . O . X . |
$$ | . X O O X O . . . . X . X X O . X . . |
$$ | . O . . O . O . . O X . X O O . X O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$c Move 138
$$ ---------------------------------------
$$ | . . . . O X X . . . . . . . . . . . . |
$$ | . . . O . O X X . . . . . . . . . . . |
$$ | . . . O . O O . X . . . . . X X X X . |
$$ | . . O , . . . . . , . . . . . O X O . |
$$ | . O O X . . . . . . X X X . X O O O . |
$$ | . X X X . . . O X X O O O X . X O . . |
$$ | . . . . X X X X O O X . . . . . . . . |
$$ | . . . . . O O O . . O O O O X X O . . |
$$ | . . . . . . . . . O . X X X O . O . . |
$$ | . . . X . . . . . , O O O X . , . . . |
$$ | . . . . . . . . . O . X X X . O . . . |
$$ | . . . X . . O . . . W . X O . . . . . |
$$ | . . . . . . . . O O . X X . O X O . . |
$$ | . . . . . . . X X O X X O O . O X . . |
$$ | . . . . . X X X O X X O . . . O . O . |
$$ | . X X X X X O O O O X . O X . O . X . |
$$ | . X O O X O . . . . X . X X O . X . . |
$$ | . O . . O . O . . O X . X O O . X O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
So not only was I ~10+ points behind, but now I was about to die extravagantly with 150+ people watching. Fantastic. In fact, all White had to do was let me live in gote and the game was his anyways, I guarantee it. /men's warehouse
I'll leave the SGF here so you can see the conclusion, kibitz and my ID removed

:
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.50]TM[300]OT[3x30 byo-yomi]
PW[aguilar1]PB[Anon]WR[6d]BR[5d]PC[The KGS Go Server at
http://www.gokgs.com/]RE[B+Resign]
;B[qd]BL[294.99]
;W[dc]WL[295.387]
;B[dp]BL[285.87]
;W[pp]WL[291.745]
;B[de]BL[282.498]
;W[ce]WL[287.97]
;B[cf]BL[278.967]
;W[cd]WL[286.157]
;B[oc]BL[271.969]
;W[qi]WL[268.694]
;B[df]BL[266.544]
;W[fc]WL[265.761]
;B[dj]BL[264.422]
;W[fq]WL[262.677]
;B[fp]BL[252.27]
;W[gp]WL[259.519]
;B[fo]BL[248.346]
;W[cq]WL[254.416]
;B[cp]BL[242.676]
;W[dq]WL[251.839]
;B[eq]BL[240.915]
;W[er]WL[250.874]
;B[ep]BL[239.712]
;W[gr]WL[249.942]
;B[go]BL[238.091]
;W[hp]WL[249.016]
;B[nq]BL[217.535]
;W[oq]WL[221.851]
;B[np]BL[214.686]
;W[pn]WL[219.471]
;B[kq]BL[141.011]
;W[nr]WL[215.284]
;B[mr]BL[138.633]
;W[or]WL[213.547]
;B[ho]BL[112.88]
;W[jp]WL[209.528]
;B[kp]BL[66.873]
;W[io]WL[205.849]
;B[in]BL[65.775]
;W[jn]WL[202.976]
;B[ko]BL[54.111]
;W[im]WL[199.625]
;B[hn]BL[53.373]
;W[jm]WL[194.711]
;B[jo]BL[52.007]
;W[ip]WL[191.233]
;B[lm]BL[44.347]
;W[jk]WL[184.603]
;B[lk]BL[30.313]
;W[gl]WL[180.105]
;B[dl]BL[5.063]
;W[ji]WL[176.479]
;B[li]BL[30]OB[3]
;W[pk]WL[173.193]
;B[kg]BL[30]OB[3]
;W[jg]WL[163.714]
;B[jf]BL[30]OB[3]
;W[ig]WL[159.717]
;B[if]BL[30]OB[3]
;W[hf]WL[151.271]
;B[hg]BL[30]OB[3]
;W[hh]WL[148.313]
;B[gg]BL[30]OB[3]
;W[gh]WL[144.894]
;B[fg]BL[30]OB[3]
;W[kf]WL[137.808]
;B[ke]BL[30]OB[3]
;W[lf]WL[133.847]
;B[le]BL[30]OB[3]
;W[mf]WL[130.327]
;B[me]BL[30]OB[3]
;W[kh]WL[78.514]
;B[nf]BL[30]OB[3]
;W[lh]WL[71.593]
;B[ic]BL[30]OB[3]
;W[qf]WL[44.622]
;B[bq]BL[30]OB[2]
;W[br]WL[39.411]
;B[bp]BL[30]OB[2]
;W[fh]WL[32.607]
;B[eg]BL[30]OB[2]
;W[rd]WL[17.304]
;B[rc]BL[30]OB[2]
;W[re]WL[30]OW[3]
;B[gb]BL[30]OB[2]
;W[gc]WL[30]OW[3]
;B[hb]BL[30]OB[2]
;W[fb]WL[30]OW[3]
;B[pm]BL[30]OB[2]
;W[om]WL[30]OW[3]
;B[qn]BL[30]OB[2]
;W[po]WL[30]OW[3]
;B[rp]BL[30]OB[2]
;W[qm]WL[30]OW[3]
;B[qq]BL[30]OB[2]
;W[rr]WL[30]OW[3]
;B[qr]BL[30]OB[2]
;W[ro]WL[30]OW[3]
;B[bf]BL[30]OB[1]
;W[be]WL[30]OW[3]
;B[fa]BL[30]OB[1]
;W[ea]WL[30]OW[3]
;B[ga]BL[30]OB[1]
;W[db]WL[30]OW[3]
;B[ph]BL[30]OB[1]
;W[qh]WL[30]OW[3]
;B[pf]BL[30]OB[1]
;W[pe]WL[30]OW[3]
;B[oe]BL[30]OB[1]
;W[pd]WL[30]OW[3]
;B[qc]BL[30]OB[1]
;W[qe]WL[30]OW[3]
;B[pc]BL[30]OB[1]
;W[mn]WL[30]OW[3]
;B[mm]BL[30]OB[1]
;W[nn]WL[30]OW[3]
;B[ln]BL[30]OB[1]
;W[jr]WL[30]OW[3]
;B[kr]BL[30]OB[1]
;W[mp]WL[30]OW[3]
;B[mq]BL[30]OB[1]
;W[lo]WL[30]OW[3]
;B[kn]BL[30]OB[1]
;W[mj]WL[30]OW[3]
;B[mk]BL[30]OB[1]
;W[nl]WL[30]OW[3]
;B[mi]BL[30]OB[1]
;W[lj]WL[30]OW[3]
;B[nj]BL[30]OB[1]
;W[kj]WL[30]OW[3]
;B[nk]BL[30]OB[1]
;W[nh]WL[30]OW[2]
;B[ni]BL[30]OB[1]
;W[mh]WL[30]OW[2]
;B[oh]BL[30]OB[1]
;W[oi]WL[30]OW[2]
;B[ml]BL[30]OB[1]
;W[kl]WL[30]OW[2]
;B[mo]BL[30]OB[1]
;W[no]WL[30]OW[2]
;B[lp]BL[30]OB[1]
;W[mo]WL[30]OW[2]
;B[pi]BL[30]OB[1]
;W[oj]WL[30]OW[2]
;B[ok]BL[30]OB[1]
;W[pj]WL[30]OW[2]
;B[ol]BL[30]OB[1]
;W[nm]WL[30]OW[2]
;B[pl]BL[30]OB[1]
;W[ql]WL[30]OW[2]
;B[oo]BL[30]OB[1]
;W[on]WL[30]OW[2]
;B[op]BL[30]OB[1]
;W[pq]WL[30]OW[2]
;B[rn]BL[30]OB[1]
;W[qo]WL[30]OW[1]
;B[so]BL[30]OB[1]
;W[rm]WL[30]OW[1]
;B[sn]BL[30]OB[1]
;W[rq]WL[30]OW[1]
;B[qp]BL[30]OB[1]
;W[qs]WL[30]OW[1]
;B[qk]BL[30]OB[1]
;W[qj]WL[30]OW[1]
;B[rs]BL[30]OB[1]
;W[ss]WL[30]OW[1]
;B[ps]BL[30]OB[1]
;W[pr]WL[30]OW[1]
;B[rs]BL[30]OB[1]
;W[sm]WL[30]OW[1]
;B[sp]BL[30]OB[1]
;W[qs]WL[30]OW[1]
;B[fr]BL[30]OB[1]
;W[sq]WL[30]OW[1]
;B[gq]BL[30]OB[1]
;W[fs]WL[30]OW[1]
;B[fq]BL[30]OB[1]
;W[hr]WL[30]OW[1]
;B[dr]BL[30]OB[1]
;W[jq]WL[30]OW[1]
;B[hq]BL[30]OB[1])
So tell me your stories

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