[Computer-go] Lee Sedol vs HanDol

[Hiroshi Yamashita]

Hi,

Lee Sedol won first game against HanDol with two handicaps.
White K7 escape does not work by Black J6 (Geta).
This is maybe easy for human, but not for programs.
White can chase Black L11 from White L12. But this is not ladder.
And White also can play N10. So understanding White K8 death needs
may search plies.
My old classic program Aya also can not understand this K8 death.


a b c d e f g h j k l m n o p q r s t
19 . . . . . . . . . . . . . . . . . . . 19
18 . . . . . . . . . . . . . . . . . . . 18
17 . . . . . . . . . . . X X X X . O X . 17
16 . . . X . . . . . + O X O . O X O X . 16
15 . . . . . . . . . . X O . X X X X O X 15
14 . . X . . . . . . . . O . O O O O O . 14
13 . . . . . . . . . . . . . . . . . O . 13
12 . . . . . . . . . . . . . . . X . . . 12
11 . . . . . . . . . . X O . . O . . . . 11
10 . . . + . . . . O O X O . X X X . . . 10
9 . . . . . . . . X X O X X . . . . . . 9
8 . . . . . . . .(X)O O O X O X . O . . 8
7 . . . . . . . . . . X X O . . X . . . 7
6 . . . . . . . . . . . . . O . . . O . 6
5 . . . X . . . . . . X . . . . X . . . 5
4 . . O X . . . . O O O O . O O X O . . 4
3 . . O X O O . X X X O X . . X O O . . 3
2 . . O O X . . X O O X X . . X . . . . 2
1 . . . . . . . . . . . . . . . . . . . 1
a b c d e f g h j k l m n o p q r s t


(;GM[1]SZ[19]
PB[Lee Sedol]
PW[HanDol]
RE[B+R]HA[2]KM[7.5]RU[Japanese]DT[2019-12-18]
PC[the Seoul headquarters of Bodyfriend]
EV[Lee Sedol retirement match]
AB[pd][dp]
;W[qp];B[dd];W[np];B[lq];W[fq];B[pp];W[pq];B[oq];W[op];B[po]
;W[qq];B[or];W[rn];B[iq];W[cq];B[dq];W[cp];B[do];W[dr];B[er]
;W[cr];B[pm];W[eq];B[cf];W[qf];B[nc];W[nn];B[pj];W[nl];B[qe]
;W[pf];B[ph];W[nf];B[ld];W[le];B[ke];W[lf];B[nj];W[oi];B[oj]
;W[md];B[mc];W[kd];B[lc];W[ql];B[ol];W[od];B[oc];W[qc];B[oe]
;W[re];B[rd];W[qd];B[pe];W[rg];B[se];W[rf];B[rc];W[of];B[ne]
;W[jp];B[kr];W[lj];B[mk];W[kl];B[lk];W[kk];B[kj];W[li];B[lm]
;W[lp];B[km];W[ip];B[hq];W[ll];B[ml];W[mm];B[ik];W[jj];B[ki]
;W[ij];B[ko];W[kp];B[jk];W[jr];B[jq];W[kq];B[lr];W[ir];B[hr]
;W[jl];B[il])

Go master Lee Sedol takes on another AI machine before he retires
https://pulsenews.co.kr/view.php?year=2019&no=1014122

Thanks,
Hiroshi Yamashita
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