(;
GM[1]FF[4]VW[]AP[Many Faces of Go:11.0]
SZ[19]
HA[0]
ST[0]
PB[P.Olsson (Sweden), 2k]
PW[Louise O'Callaghan, 3k]
KM[5.0]
RU[Japanese]
RE[W+R]
SO[BGJ 40, February 1978, Page 16]
BR[2 kyu]
WR[3 kyu]
C[Copyright British Go Association 1978, 2004]
;B[pc];W[dd];B[qp];W[cq];B[oq];W[pe];B[nd];W[ph]
C[White 8 is reasonable, though not joseki - after 9-10 have been \
exchanged White 8 should be one point further from the 2-stone \
wall.]

;B[qd];W[qe]
C[White 8 is reasonable, though not joseki - after 9-10 have been \
exchanged White 8 should be one point further from the 2-stone \
wall.]
LB[qe:10][qd:9][ph:8]
;B[qk]
C[Black 11 should be one point higher - playing here is just too \
far away to have much effect on White. Of course, Black 11 is \
not affected by White either, but this is a small gain for Black, \
sinceBlack 11 is backed up by Black 3 & 5. It is White whose \
stones are weak.]
LB[oq:5][qp:3]
;W[ic];B[ep]
C[13-21 is a standard sequence when black has a stone such as Black \
5 on the right. The large moyo created is Black's compensation \
for having pushed White along the 4th line with 15 and 19 - a \
course which would normally be taboo.]
LB[oq:5]
;W[do];B[eo];W[dn];B[dq];W[cp]
;B[en];W[dm];B[jp]
C[13-21 is a standard sequence when black has a stone such as Black \
5 on the right. The large moyo created is Black's compensation \
for having pushed White along the 4th line with 15 and 19 - a \
course which would normally be taboo.]
LB[oq:5][jp:21][dm:20][en:19][cp:18][dq:17][dn:16][eo:15][do:14][ep:13]
;W[fl];B[cf]
C[The knight's move between 20, 22 is a weakness White would have \
avoided by playing 22 just above 19. Either way Black 23 is natural \
before White gets another stone in this area and makes invasion \
very difficult.]
LB[fl:22][dm:20][en:19]
;W[ch]
C[White 24 goes for a maximum area anyway.]
;B[cc]
C[By diving in at 25, Black does not have to defend a weak group \
outside and he gets sente when White plays 36 to roughly connect \
with White 12.]
;W[cd];B[dc];W[ed]
;B[bd];W[be];B[bc];W[ce];B[fc];W[fd];B[gc];W[hd]
C[By diving in at 25, Black does not have to defend a weak group \
outside and he gets sente when White plays 36 to roughly connect \
with White 12. (However, 32 should be just below 30 when White \
has squeezed with 24 as here.)]
LB[ch:24][ce:32][be:30][ic:12]
;B[oj]
C[Black 37 leans towards the White group and weakens it, because \
Black 11 was one point too low, so is this one point too far \
away, and White ignores it to play 38. This has the advantage \
of increasing white's moyo and decreasing black's prospects.]
LB[qk:11]
;W[hl]
C[Black 37 leans towards the White group and weakens it, because \
Black 11 was one point too low, so is this one point too far \
away, and White ignores it to play 38. This has the advantage \
of increasing white's moyo and decreasing black's prospects.]

;B[rd]
C[Black 39 is another slow move, but ...]
;W[nf]
C[Black 39 is another slow move, but now the white group must move \
and 40 is a simple way to run out. White's fear is that black \
will run out slightly ahead of him towards the centre and end \
up by devastating the one giant White area.]
LB[rd:39]
;B[ld];W[kf]
C[White's fear is that black will run out slightly ahead of him \
towards the centre and end up by devastating the one giant White \
area. So White gets ahead in a loose way with the two-point jump \
to 42, but of course this can be cut sooner or later.]
;B[in];W[jk]
C[Maybe 44 was White's chance to strengthen her group, in preparation \
for an invasion of Black's moyo.  With 44 White seems to actually \
back off from Black's moyo, as if she were ahead and able to \
relax. But White has only one territory, while Black has three \
and is somewhat ahead. At this critical point in the game, White \
has a choice between pressing Black back, forcing Black to solidify \
his moyo but preventing him from enlarging it further, or preparing \
to invade deeply, (see White 132). White 44 here does neither.]
;B[mf]
C[45-64 is a disaster for White]
;W[mg];B[lf];W[lg]
;B[kg];W[kh];B[jg];W[ke];B[kd];W[jd];B[ng];W[nh];B[og];W[of]
;B[mh];W[lh];B[oh];W[ni];B[oi];W[mi]
C[45-64 is a disaster for White.]
LB[mi:64][oi:63][ni:62][oh:61][lh:60][mh:59][of:58][og:57][nh:56][ng:55][jd:54][kd:53][ke:52][jg:51][kh:50][kg:49][lg:48][lf:47][mg:46][mf:45]
;B[lm]
C[Black 65 is a fair way to increase his moyo...]
;W[pg]
C[... and White 66 is a faint chance for a recovery. The white \
group should die, but any strength that White can acquire and \
which faces past 65 to the black moyo all along the bottom gives \
White a chance of invading... (see 87)]
LB[lm:65]
;B[ne];W[qi]
;B[rf];W[re];B[se];W[rg];B[qf];W[qg];B[rj];W[pj];B[pk];W[ok]
;B[nk];W[ol];B[nj];W[nl];B[lj];W[ll];B[lk];W[ml];B[jj]
C[... However Black will still win easily if he runs out with 87 \
etc. far enough to gain liberties, reducing the white moyo as \
he does so, and then go back and safely capture the dead white \
group...Black 89 is the blunder that ruins his plan. If he connects \
to save 91, White can fill any liberty of Black's trapped stones \
- because White has an eye and Black does not.]
;W[kk]
;B[jh]
C[... Black 89 is the blunder that ruins his plan...]
;W[kj];B[ki]
C[... If he connects to save 91, White can fill any liberty of \
Black's trapped stones - because White has an eye and Black does \
not.]
;W[li];B[ri]
C[Black 93 is a mistake - if Black should later connect 91 during \
fighting in the centre, he will threaten nothing.]
LB[ki:91]
;W[pi];B[ge];W[gd];B[je];W[jf]
;B[ie];W[if];B[he];W[hg];B[ff];W[ef];B[id];W[jc];B[fg]
C[With 97-107 Black is ingeniously attacking both the five White \
stones, 42-52 etc., and threateningto cut at 108 (A) saving his \
own stones with a large profit on the edge.]
LB[ke:52][kf:42][hc:A]
;W[hc]
;B[fi];W[ii];B[ci]
C[Black 111 is an excellent point for creating trouble. Black keeps \
away from the strong white lowerleft corner and also squeezes \
the white wall which does not actually have two eyes yet - he \
only has one eye on the upper edge, in gote. By playing in contact \
with the white stone, White's possible answers are quite limited.]
;W[dh];B[di];W[eh];B[bf];W[ae]
C[The exchange 115-116 is a bonus for Black, see the earlier comment.]
LB[bf:15]
;B[bh]
C[Black 117 gives Black a small chance of recovery along the edge \
and removes the same possibility for White. White can cut just \
above or below 117, but if he does so at once, he loses because \
of the lack of liberties on the stones 112-114 etc.]
LB[eh:14][dh:12]
;W[ei]
;B[ej];W[dj];B[cj];W[dk];B[bl];W[bk]
C[White 124 is an unnecessary sacrifice; it actually helps Black \
to live so White ends up in gote making herself an eye with 130 \
and threatening a second eye.]
;B[ck];W[cl];B[bj];W[bm]
;B[ak];W[df]
C[White 124 is an unnecessary sacrifice; it actually helps Black \
to live so White ends up in gote making herself an eye with 130 \
and threatening a second eye. However, 130 is a little late - \
Black could have omitted 129 and pushed left of 107 cutting off \
the white wall after all.]
LB[fg:7][ak:29][df:30][bk:24]
;B[qm]
C[Black 131 prevents White playing there, but White at 131 does \
not kill the black stones and now White can play the invasion \
that is justified by her 80-86 wall.]
;W[lp]
C[Black 131 prevents White playing there, but White at 131 does \
not kill the black stones and now White can play the invasion \
that is justified by her 80-86 wall. White 132 is a good point, \
near enough to the wall to have an excellent chance of joining \
to it, while also aiming to attach under Black 'triangle' and \
make a live group along the edge. A move which threatened only \
one of these objectives will be answered easily.]
LB[qm:31][ml:86][ol:80]
;B[mo]
C[133 tries to hem white in, so White attaches.]
;W[jq];B[kp];W[kq]
C[Black 135, White 136 helps White live on the edge, but makes \
it difficult for her to connect. Black 137, White 138 does exactly \
the opposite.]
LB[kp:35]
;B[mq];W[lq]
C[Black 135, White 136 helps White live on the edge, but makes \
it difficult for her to connect. Black 137, White 138 does exactly \
the opposite.]
LB[lq:38][mq:37][kq:36][kp:35]

;B[iq]
C[Black 139 is ineffective. To stop White making eyes Black should \
play on the second line, for example at 144 (A), or 146 (B). \
However, nothing can stop White now....]
LB[mr:B][ir:A]
;W[lo];B[mn];W[ip];B[hp];W[ir];B[hq];W[mr];B[nr];W[mp]
;B[nq];W[km];B[kn];W[ln]
C[After 144-148 pushing Black back as far as possible, she joins \
her wall with 150-152. If Black saves the one stone, White captures \
151.  === Black resigned.]
LB[ln:52][kn:51][km:50][nq:49][mp:48][nr:47][mr:46][hq:45][ir:44]
)
