[gnugo-devel] loon door

[吉川 竹四郎]

 To make correct end-plays we must avoid a valueless move.
 On professional Go player's game , they would terminate
 games which apparently remained some yose moves.
 But such a move is valueless.

 Four examples are attached, derived from Meijin Tournament.
 file     year   Black     White    komi   hama  finalScore
 M16f4f  1991  Kobayashi Rin     5.5    (2,3)       5.5
 M1711   1992  Takemiya  Chyo    5.5  (5,4)      -4.5
 M2333   1998  Yamada    Touno   5.5  (4,9)      -3,5
 M28f1   2003  Yoda   Yamashita  6.5  (7,11)      7.5

 I named such a go-position as 'loon-door'(stupid door).

 What a programming strategy can solve such a go-position?
 pattern data base?

 Takeshiro Yoshikawa

---------------m28f1,sgf
(;GM[1]
SZ[19]
KM[6.5]AB[ac][ag][ah][ai][al][an][bb][bd][bf][bh][bk][bl][bn][bo][bq][ca][cc
][ce][cf][cg][cm][cn][db][df][dl][dm][do][ea][eb][ec][eg][eh][el][eo][ep][es
][fa][fk][fl][fq][fr][fs][gg][gi][gl][gm][gp][he][hf][hm][ie][if][im][in][je
][jg][jh][jl][jm][jo][jp][kd][ke][ki][kj][kl][kp][ld][lh][lj][ll][lq][mc][md
][mh][mk][ml][mo][mq][nb][nd][ng][nj][nk][no][np][nq][oe][oh][oj][om][on][oo
][pc][pe][pf][ph][pk][pm][pp][qc][qd][qe][qh][qi][qo][qp][qq][rd][rh][rq][sc
][sg][sp]AW[aj][ak][ao][ap][bi][bj][bp][br][cd][ch][ci][ck][cl][co][cp][cq][
dc][dd][de][dg][dh][di][dk][dp][dr][ds][ed][ee][ef][ei][ej][ek][eq][er][fb][
fc][fe][ff][fj][fm][fp][ga][gb][gd][gf][gh][gj][gk][hd][hg][hh][hi][hj][hk][
hl][id][ig][ih][ij][il][jd][ji][jj][jk][jn][kc][kk][km][kn][ko][lb][lc][li][
lm][lo][lp][mb][mi][mm][mn][mp][nc][nh][ni][nl][nm][ob][oc][od][oi][ok][ol][
pb][pi][pj][pl][pn][po][qb][qf][qj][ql][qm][qn][rb][rc][re][rf][ri][rj][rm][
ro][rp][sd][se][si][sn])

------------m2333.sgf---------------------------------
(;GM[1]
SZ[19]
KM[5.5]AB[ab][ag][ai][ao][ba][bc][bf][bh][bj][bl][bn][bp][br][cc][cd][cf][ch
][ci][cj][cl][cn][co][cp][cs][dc][dg][dk][do][dq][dr][eb][ec][eg][eh][ek][en
][eo][fa][fb][fe][ff][fk][fn][fr][ga][gg][gh][gr][gs][hd][hh][hi][hr][ie][io
][ip][ir][jj][jl][jm][jp][jq][kh][ki][kj][kl][km][kp][lc][ld][lg][lk][lm][lq
][mc][me][mf][mg][mj][mr][nb][nd][ne][ng][nj][nr][oa][ob][od][of][og][oh][oj
][on][or][pc][pd][pe][pi][pj][pl][pn][pp][pr][qa][qb][qc][qj][ql][qm][qn][qo
][qp][qq][ra][rm][sb][sl][sm]AW[ac][ad][ae][af][ak][al][am][an][bd][be][bk][
bm][ce][ck][cm][dd][de][df][dh][di][dj][dm][dn][ds][ed][ef][ei][ej][em][ep][
eq][er][es][fc][fd][fi][fm][fo][fs][gb][gc][gd][ge][gf][gi][gj][gn][gp][ha][
hf][hg][hj][hk][hn][hq][if][ih][ii][ij][il][im][in][iq][jc][jd][je][jh][ji][
jk][jn][jo][kb][kc][kd][kf][kg][lb][le][lf][lh][ll][ln][lo][lp][ma][mb][mk][
ml][mm][mq][na][nk][nn][no][nq][oi][ok][ol][om][oo][op][oq][pf][pg][ph][pk][
pm][po][pq][qd][qe][qf][qh][qk][rb][rc][rf][ri][rj][rk][rl][sd][se][sk])
----------m1711.sgf------------
(;GM[1]
SZ[19]
KM[5.5]AW[aj][ak][al][am][aq][bd][bf][bi][bk][bm][bp][bq][ce][ch][ci][cp][dd
][dj][do][dp][eb][ec][ed][ee][eg][eh][ei][ej][ek][ep][fa][fb][fe][ff][fn][fp
][gf][gj][gk][gm][gn][go][gp][gq][hi][hj][hq][ia][ib][ie][in][ir][jc][je][jf
][jg][jh][ji][jj][jr][kb][kd][ke][kf][ki][kq][kr][ld][lh][lr][ls][me][mf][mq
][mr][nb][nc][ne][np][nq][ob][od][oe][of][ol][on][oo][op][oq][pb][pe][pk][pl
][pm][po][qb][qc][qe][rb][sb][sc][sd]AB[ao][ap][bj][bl][bn][bo][cf][cj][ck][
cm][cn][de][di][dk][dl][dm][ef][el][en][eo][fc][fd][fg][fh][fl][fo][gb][ge][
gg][gh][gi][gl][ha][hb][he][hf][hh][hm][hn][ho][hp][hr][ic][id][if][ig][ih][
ii][ij][ik][iq][jk][jp][jq][kg][kh][kj][kp][le][lf][lg][li][lj][lp][lq][mg][
mp][ms][nf][ng][nl][nm][nn][no][nr][ns][oc][og][ok][or][pc][pd][pf][pj][pp][
pq][pr][qd][qf][qg][qh][qk][ql][qm][qn][qo][rc][rd][re][rh][se][sf][sg])
----------m16f4.sgf-----------
(;GM[1]
SZ[19]
KM[5.5]AW[ab][ac][ah][ap][bb][bg][bi][bj][bn][bp][bq][ca][cc][cg][ch][cj][cl
][cm][cp][da][db][dc][dd][de][df][dj][dl][dp][dq][ef][eg][eh][ek][el][em][fd
][fk][fl][fr][fs][gg][gl][gn][go][gs][hf][hg][hk][hm][ho][hp][hq][hr][id][ie
][ig][ih][ij][ik][in][jh][ji][jj][jl][jm][jo][jp][ke][kk][kl][kp][le][lf][lk
][ll][lm][ln][lp][lq][lr][ls][me][mf][mg][mi][ml][mn][mr][nf][ng][ni][nn][np
][om][on][op][pg][ph][pi][pm][po][pp][qe][qf][qg][qi][qj][qo][qq][rg][rj][rl
][rm][rn][rp][rq][sk][so]AB[ae][aq][ar][bc][bd][bf][br][cd][ce][cf][ci][cn][
cq][cr][dg][dh][di][dm][dn][dr][ea][eb][ec][ed][ee][ei][ej][en][eq][er][es][
ff][fg][fh][fi][fj][fm][fn][fo][fp][gc][gd][ge][gf][gi][gm][gp][gq][gr][he][
hh][hi][hj][ib][if][ii][je][jf][jn][jq][kd][kf][kg][kh][ki][kj][km][kn][ko][
ld][lg][li][lj][lo][md][mj][mk][mm][mo][mp][mq][ms][ne][nj][nl][nm][no][nq][
nr][ns][oe][of][oj][ol][oo][oq][pd][pj][pl][pn][pq][qd][qh][qk][ql][qm][qn][
qr][rd][re][rf][rh][rk][rr][sg][sp][sq][sr])