Endgame tesuji from game

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emeraldemon
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Endgame tesuji from game

Post by emeraldemon »

Black to play:

Click Here To Show Diagram Code
[go]$$ Position at move 259
$$ ---------------------------------------
$$ | . O O O X . . . . X O O . O X . X X . |
$$ | . O X X X . . . . X X O . O O X O X . |
$$ | . O X . . . . . . X O . . O X X . . X |
$$ | . . O X X X X O . X O O . O O X . X O |
$$ | . . O X . O X X X O O X O O X X X X O |
$$ | O O O X . O O O X X X X X O O X O O O |
$$ | . X O X O . . X O O X . . . O O O X O |
$$ | X . X X O . . . O X O O O O O X X X X |
$$ | . X . X O O O . O X X O O X X . . X . |
$$ | . . X X X O . O X X O X X O X X X . . |
$$ | . . O O O X O O X X O . . O O X O X . |
$$ | . O O . O X X X X O O O . . . O O X . |
$$ | O O X O O X . X . X O X . O . X O . O |
$$ | O X X X O O X . X O O O . . . X O O . |
$$ | X . . X X O X X X X X X O X O O X X X |
$$ | . X . X O O . O O O O X O O O X X O X |
$$ | . X X O O . O X . . . O O X X . . O . |
$$ | . X . X O O . . . . . . O O X . X O X |
$$ | . . X X X X O . . . . . O X X X . X . |
$$ ---------------------------------------[/go]


I played black in this game. It was a close game, so not seeing this move may have lost it for me. It was only looking over the game afterwards that I noticed this point.
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SoDesuNe
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Re: Endgame tesuji from game

Post by SoDesuNe »

Click Here To Show Diagram Code
[go]$$ Position at move 259
$$ ---------------------------------------
$$ | . O O O X . . . . X O O . O X . X X . |
$$ | . O X X X . . . . X X O . O O X O X . |
$$ | . O X . . . . . . X O . . O X X . . X |
$$ | . . O X X X X O . X O O . O O X . X O |
$$ | . . O X . O X X X O O X O O X X X X O |
$$ | O O O X . O O O X X X X X O O X O O O |
$$ | . X O X O . . X O O X . . . O O O X O |
$$ | X . X X O . . . O X O O O O O X X X X |
$$ | . X . X O O O . O X X O O X X . . X . |
$$ | . . X X X O . O X X O X X O X X X . . |
$$ | . . O O O X O O X X O . . O O X O X . |
$$ | . O O . O X X X X O O O . 4 1 O O X . |
$$ | O O X O O X . X . X O X . O 2 X O 5 O |
$$ | O X X X O O X . X O O O . . . X O O 3 |
$$ | X . . X X O X X X X X X O X O O X X X |
$$ | . X . X O O . O O O O X O O O X X O X |
$$ | . X X O O . O X . . . O O X X . . O . |
$$ | . X . X O O . . . . . . O O X . X O X |
$$ | . . X X X X O . . . . . O X X X . X . |
$$ ---------------------------------------[/go]


Eh?
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Dusk Eagle
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Re: Endgame tesuji from game

Post by Dusk Eagle »

I think this is better for white:

Click Here To Show Diagram Code
[go]$$ Position at move 259
$$ ---------------------------------------
$$ | . O O O X . . . . X O O . O X . X X . |
$$ | . O X X X . . . . X X O . O O X O X . |
$$ | . O X . . . . . . X O . . O X X . . X |
$$ | . . O X X X X O . X O O . O O X . X O |
$$ | . . O X . O X X X O O X O O X X X X O |
$$ | O O O X . O O O X X X X X O O X O O O |
$$ | . X O X O . . X O O X . . . O O O X O |
$$ | X . X X O . . . O X O O O O O X X X X |
$$ | . X . X O O O . O X X O O X X . . X . |
$$ | . . X X X O . O X X O X X O X X X . . |
$$ | . . O O O X O O X X O . . O O X O X . |
$$ | . O O . O X X X X O O O . . 1 O O X . |
$$ | O O X O O X . X . X O X . O 2 X O 5 O |
$$ | O X X X O O X . X O O O . . 4 X O O 3 |
$$ | X . . X X O X X X X X X O X O O X X X |
$$ | . X . X O O . O O O O X O O O X X O X |
$$ | . X X O O . O X . . . O O X X . . O . |
$$ | . X . X O O . . . . . . O O X . X O X |
$$ | . . X X X X O . . . . . O X X X . X . |
$$ ---------------------------------------[/go]
We don't know who we are; we don't know where we are.
Each of us woke up one moment and here we were in the darkness.
We're nameless things with no memory; no knowledge of what went before,
No understanding of what is now, no knowledge of what will be.
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SoDesuNe
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Re: Endgame tesuji from game

Post by SoDesuNe »

Most certainly ; )
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EdLee
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Post by EdLee »

Either way, W+10.5 ... can B do better?
[sgf-full](;CA[utf-8]AB[pm][sc][rd][re][qe][pe][oe][pf][pd][pc][oc][ea][eb][db][cb][cc][dd]
[ed][fd][gd][ge][he][ie][if][jd][jc][jb][ja][kb][sr][ph][qh][rh][rg][sh][ri][oi]
[ni][oj][pj][qj][pk][rk][rl][oq][or][os][ps][ns][nq][no][sp][so][ro][qo][qp][pp]
[qr][rs][oa][pb][qa][ra][pn][mj][lj][jf][kf][kg][lf][le][mf][ki][ji][jh][jj][jk]
[ik][ij][il][lm][jm][hm][in][io][jo][ko][lo][lp][ho][go][gn][fm][fl][fk][hl][gl]
[hg][de][df][dg][dh][di][cj][dj][ej][bi][ch][bg][ah][hq][fs][es][ds][cs][dr][br]
[bq][cq][bp][ao][bn][cn][cm][dn][do][eo][dp]AW[nj][bc][bb][ba][mh][mi][li][lh][kh]
[ca][da][cd][ce][cf][cg][jg][ig][ih][ii][bf][af][hd][je][ke][kc][kd][ld][kj][kk]
[kl][jl][ll][km][kn][ln][jn][lb][la][ka][me][ne][nd][nc][nb][lq][na][ob][od][nf]
[of][og][oh][nh][pg][gk][hk][hj][gi][fi][fj][ei][eh][eg][fe][ff][gf][hf][qg][qf]
[rf][sf][se][sd][sg][qb][pl][ql][qk][qm][qn][ck][dk][ek][el][em][cl][dm][bl][bm]
[am][an][en][fn][fo][fp][ep][eq][dq][er][fr][gs][gq][hp][ip][jp][kp][rn][sm][rr]
[rq][rp][po][oo][op][np][mo][mp][mq][mr][ms][nr][nm][ok][nk]AP[MultiGo:4.4.4]SZ[19]
AB[rb]KM[6.5]MULTIGOGM[0]

(;B[rm];W[ol];B[sn];W[ag];B[bh];W[ak];B[aj];W[bk];B[bj];W[ef];B[mg];W[pa];B[im]
;W[oa])
(;B[ol];W[om];B[rm];W[on];B[sn];W[ag];B[bh];W[ak];B[aj];W[bk];B[bj];W[ef];B[mg]
;W[pa];B[im];W[oa]))[/sgf-full]
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emeraldemon
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Re: Endgame tesuji from game

Post by emeraldemon »

Yup, you all found it :) . @ EdLee: it was a no-komi (handicap) game, and I had two more prisoners, so I think the actual difference would be something more like W+2.5 if I had found this tesuji. Not quite enough, I guess. In the game it sat for a while before white defended, I'm not sure if white didn't see it either, or was just counting on me not finding it.
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