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[gnugo-devel] joseki mistake


From: Evan Berggren Daniel
Subject: [gnugo-devel] joseki mistake
Date: Fri, 9 May 2003 17:22:29 -0400 (EDT)

Paul sent me a game of curent gnugo vs gnugo 3.2 in which the current
version played the incorrect hane here:

+---------
|.........
|.........
|..XX*....
|..OO.....
|.........
|..X......
|.........
|..O......

The following patch marks the move as antisuji in hoshi.sgf, and also
expands EB1502 to correct the original valuation.  I think we should begin
a test suite for mistakes in joseki, and have attached the first testcase
and the sgf file.  I have not run complete regressions.

Thanks

Evan Daniel


Index: patterns/hoshi.sgf
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/hoshi.sgf,v
retrieving revision 1.26
diff -u -d -r1.26 hoshi.sgf
--- patterns/hoshi.sgf  9 May 2003 15:33:12 -0000       1.26
+++ patterns/hoshi.sgf  9 May 2003 21:14:18 -0000
@@ -85,10 +85,11 @@
 ]MA[li])
 )

-(;B[oc]C[# Non-joseki often played against GNU Go
-];W[rc]MA[lg]C[U
-];
-B[rd];W[od]MA[lg]C[U
+(;B[oc]C[0
+# Non-joseki often played against GNU Go
+]MA[mi];W[rc]
+MA[lg]C[U
+];B[rd];W[od]MA[lg]C[U
 ]
 (;B[nc];W[pe]MA[lg]C[S
 ];B[oe];W[nd]MA[lg]C[U
Index: patterns/patterns.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns.db,v
retrieving revision 1.107
diff -u -d -r1.107 patterns.db
--- patterns/patterns.db        6 May 2003 10:35:42 -0000       1.107
+++ patterns/patterns.db        9 May 2003 21:14:20 -0000
@@ -6237,13 +6237,13 @@

 Pattern EB1502

-oooo?          hane is urgent
-oo*.?
-.OX.o
-.OX.o
-....?
-....?
------
+?oooo??                hane is urgent
+ooo*.??
+o.OX.o?
+o.OX.o?
+o....??
+o....??
+-------

 :8,OXead



loadsgf games/joseki01.sgf 29
10 gg_genmove white
#? [E16]



(;GM[1]FF[3]
RU[Japanese]SZ[19]HA[2]KM[0.5]
PW[White]
PB[Black]
GN[White (W) vs. Black (B)]
DT[2003-05-09]
SY[Cgoban 1.9.14]TM[-]AB[pd][dp]
RE[W+29.5]
;W[dd];B[pp];W[nc];B[lc];W[qc];B[pc];W[qd];B[pe];W[pb];B[ob];W[qb];
B[oc];W[qf];B[nd];W[fq];B[cf];W[pn];B[np];W[qp];B[qq];W[qo];B[rq];
W[qj];B[jq];W[ch];B[cc];W[cd];B[dc];W[ec];B[eb];W[fc];B[ef];W[ck];
B[fg];W[cn];B[fi];W[cq];B[fp];W[fe];B[fb];W[id];B[ib];W[gp];B[fo];
W[eq];B[fm];W[gc];B[jo];W[gb];B[cp];W[dq];B[nn];W[pl];B[og];W[nl];
B[bp];W[lm];B[ln];W[lk];B[sn];W[ph];B[bq];W[br];B[mh];W[bc];B[ga];
W[ha];B[oh];W[fa];B[jc];W[rn];B[so];W[jk];B[jf];W[jh];B[jd];W[ie];
B[dh];W[di];B[cg];W[eh];B[dg];W[bh];B[ei];W[dj];B[kg];W[hr];B[ir];
W[hq];B[rm];W[ip];B[rk];W[rj];B[sj];W[si];B[sk];W[rf];B[qm];W[pm];
B[qn];W[po];B[oo];W[qk];B[ar];W[ro];B[sp];W[bs];B[rl];W[de];B[hi];
W[pq];B[op];W[ii];B[pg];W[rh];B[co];W[bn];B[in];W[jp];B[kp];W[kq];
B[lq];W[kr];B[lr];W[jr];B[km];W[ll];B[if];W[pi];B[gf];W[oa];B[he];
W[nb];B[hd];W[en];B[gn];W[fn];B[go];W[ni];B[em];W[do];B[ep];W[dm];
B[ks];W[iq];B[mm];W[js];B[ls];W[hj];B[hh];W[ka];B[ia];W[hl];B[hm];
W[mi];B[lh];W[li];B[il];W[gl];B[ek];W[ik];B[dl];W[cl];B[fk];W[jl];
B[kb];W[jm];B[kn];W[la];B[ja];W[na];B[lb];W[ma];B[gm];W[hb];B[hc];
W[be];B[bg];W[ho];B[bi];W[ci];B[ah];W[bj];B[ai];W[aj];B[ag];W[im];
B[io];W[dk];B[qg];W[kh];B[rg];W[sg];B[sm];W[pf];B[of];W[md];B[nh];
W[mc];B[ne];W[me];B[mf];W[le];B[bo];W[ke];B[je];W[ee];B[ml];W[mk];
B[nm];W[om];B[qe];W[re];B[eo];W[dn];B[an];W[am];B[ao];W[el];B[fl];
W[qh];B[lf];W[oi];B[ej];W[gj];B[gi];W[ig];B[jg];W[ih];B[hg];W[gd];
B[kd];W[gk];B[kl];W[kk];B[dl];W[al];B[ge];W[ql];B[rp];W[el];B[jn];
W[dl];B[kf];W[ff];B[df];W[ce];B[ae];W[ad];B[af];W[bf];B[eg];W[on];
B[hn];W[hp];B[ld];W[cr];B[mb];W[pa];B[fj];W[as];B[aq];W[tt];B[tt];
TW[aa][ba][ca][da][ea][ga][qa][ra][sa][ab][bb][cb][db][eb][fb][rb][sb][ac][cc][dc][rc][sc][bd][ed][fd][rd][sd][se][sf][sh][ji][ki][qi][ri][cj][ij][jj][kj][lj][mj][nj][oj][pj][ak][bk][hk][nk][ok][pk][bl][il][ol][bm][cm][gq][jq][dr][er][fr][gr][ir][cs][ds][es][fs][gs][hs][is]
TB[jb][ic][kc][id][od][ie][oe][hf][nf][gg][lg][mg][ng][eh][fh][gh][sl][mn][ko][lo][mo][no][ap][lp][mp][mq][nq][oq][pq][sq][mr][nr][or][pr][qr][rr][sr][ms][ns][os][ps][qs][rs][ss]
C[The game is over.  Final score:
   White = 68 territory + 10 captures + 0.5 komi = 78.5
   Black = 44 territory + 5 captures = 49
White wins by 29.5.
]
)




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