(;
GM[1]FF[4]VW[]AP[Many Faces of Go:10.0]
SZ[19]
HA[4]
ST[1]
PB[Unknown]
PW[Unknown]
KM[0.5]
RE[B+R]
SO[BGJ 8, Spring 1969, Page 14]

AB[dd][pd][pp][dp]

C[Copyright British Go Association 1969, 2000 
];W[qf];B[nd];W[fq];B[dn];W[nq];B[qm];W[jp];B[qe]
;W[pf]
(;B[qj]
C[The manoeuvres up to 9 are perfectly alright, but 10' would have
been better placed at B. It is 'well-balanced' with black 6 in
Fig 1, and looks for a chance to attack the white group by playing
at A next thereby blocking it in to the side.  
]LB[pi:B][qm:6][nf:A][pf:9]
;W[cf];B[cj];W[fc]
(;B[ee]
C[14 is an easy way of playing, allowing White considerable freedom
to do what he likes. It is unfavourable in this case because
the black left hand side is rather open to attack with 19 etc.
and so white can invade the corner without coming under any disadvantage
at all. Hence 14' should have been replaced by 1 in the two variations.
Both of these are advisable joseki in this case.  
];W[cc];B[cd];W[dc];B[ge];W[ej];B[dl];W[ci]
(;B[bi]
C[The sequence up to 28, though safe and secure, has resulted in
a rather unsatisfactory formation for black. A more positive
and offensive alternative would be to play as the variation.
If white reacts with 25' as the second variation, then black
is alright if he replies as shown.  
]LB[di:A]
;W[bj];B[bk];W[dj];B[ck];W[bh];B[aj]
C[The sequence up to 28, though safe and secure, has resulted in
a rather unsatisfactory formation for black. A more positive
and offensive alternative would be to play the variation to move
22.  
];W[dh];B[hc]
C[Black 30 is a good move, preventing White from playing here,
which would be a natural extension from the corner, attacking
white and building up his influence on the upper side.  
]
(;W[ed]
C[31 is not so good. it should have been played at A, which aims
next at playing at B. This could then not be captured by black
in a ladder because of A and so this cut would then threaten
black's four upper left stones.  
]LB[hd:B][pi:A]
;B[fd];W[ec];B[gc]
(;W[de]
C[Though white gains greatly by capturing two black stones with
35, black 36(A) gives much trouble to his two stones and at the
same time continues the build up of black influence on the upper
side. Playing C goes a long way to prevent the expansion of black's
sphere of influence, while saving his two stones from great hardship.
]LB[md:C][nf:A]
;B[nf];W[oi]
(;B[qh]
C[38 strikes at the vital point of the white group in preventing
it from gaining any eyes along the side, but 40' should have
continued the attack as the variation here, then black gains
an advantage with ease by being able to attack two white groups
simultaneously.  
];W[og];B[pq];W[qc]
(;B[pc]
C[If Black tries to resist 41 by playing at 43, white will be able
to get a live group inside the corner, and thereby ruin it by
playing at D.  So 42-46 are forced.  
]LB[ob:D]
;W[re];B[qd];W[rd];B[rc]LB[ob:D]
;W[ql]
C[47 is an advanced play, seeing how black will respond before
making a direct invasion of the lower right corner or the right
side.  
];B[pl];W[pm];B[rl]
;W[qn];B[qk];W[pn];B[rp]
C[Black answers correctly up to 54. This should have been played
at 65(A), thereby dividing White's army into two weak groups.
Protecting the corner is all very well, but not at the cost of
being shut out of the centre and being able to attack strongly.
]LB[oo:A]
;W[rm];B[nl];W[mh];B[no];W[ql];B[ok]
;W[rk];B[qm];W[nn];B[ql];W[oo]
C[With 65 White has managed to connect his two groups, but his
upper right group is still precarious.  
];B[nr];W[mq];B[rg];W[rf];B[mr]
C[70 is not good. Black is forced to play at 72(B) to secure the
corner on gote and, because of 71(A), he can't intrude much further
into the lower side. He should simply have played at 72; this
would then have threatened to play later at 71 and destroy nearly
all this side.  
]LB[or:B][lr:A]

;W[lr];B[or];W[ke]
C[Black answers the attack on the upper side, starting with 73
with commendable coolness, and, though he gives up three stones,
90 and 92 weaken the White group on the right further.  
];B[kc];W[me];B[ld];W[jc];B[jd];W[kd];B[kb]
;W[lc];B[lb];W[le];B[md];W[id];B[je];W[jf];B[ie];W[he];B[if]
C[Black answers the attack on the upper side, starting with 73
with commendable coolness, and, though he gives up three stones,
90 and 92 weaken the White group on the right further.  
]
;W[hf];B[ig];W[hd];B[ic];W[gd];B[ne];W[cq]
C[White invades black's last open corner with 97, which is correctly
answered with 98-102, keeping sente, protecting his left hand
side and letting the corner group connect to the lower side because
a disconnection would gain him nothing of any value.  
];B[dq];W[dr];B[cp]
;W[br];B[bq]
C[White invades black's last open corner with 97, which is correctly
answered with 98-102, keeping sente, protecting his left hand
side and letting the corner group connect to the lower side because
a disconnection would gain him nothing of any value.  
]LB[bq:2][br:1][cp:0][dr:99][dq:98][cq:97]
;W[cr];B[lq];W[kr];B[lp]
C[However, 104 and 106 are premature; they are nullified by 105
and 107(A), whereas black could have gained later by playing
at 105 when White cannot stop his connection without losing two
stones.  
]LB[mo:A][lp:6][kr:5][lq:4]
;W[mo];B[li]
C[108 starts a vicious attack on this large white group, which
has no eyes along the edge and only one by capturing 108 itself.
This results in White being unable to stop the capture of five
stones, thereby saving the three black ones which had been lost
earlier! 
];W[mj];B[lk]
;W[lj];B[kj];W[ki];B[jj];W[kh];B[ng];W[nh];B[ph];W[oh];B[hg]
;W[mk];B[ml];W[ll];B[kk];W[ih];B[ii];W[hh];B[jg];W[jh];B[gf]
;W[lm]
C[A quick count of the game at this point shows that white is about
25 points down at a conservative estimate, because all Black's
territory is secure and White's large territory on the lower
side is still very open.  This coupled with the fact that, should
Black try to retrieve his stones 104 and 106, White's lower right
group would be in serious danger, means that White must stake
all on 131, challenging Black to a life-or-death struggle in
the centre.  From this point on all the moves are forced by this
necessity for White.  
];B[gj];W[ik];B[hi];W[gh];B[gl];W[fk];B[gk];W[em];B[gn]
;W[fo];B[jm];W[in];B[im];W[hn];B[hm];W[kl];B[jl];W[ji];B[gi]
;W[ij];B[jk];W[hk]
C[Notice 153; White could have saved his large group by playing
at 165(A), but if he does so then Black will play at 159(B) and
his stones in the centre will at worst be a seki, so he cannot
afford to do so but must continue his attack.  
]LB[en:B][fg:A]
;B[fl];W[el];B[fn];W[fm];B[gm];W[en];B[go]
C[160 threatens the play at 161(A), for then black could either
cut off White's stones on the right, or capture immediately 143
and 145 and thus gain two eyes. So 161 is forced.  
]LB[hn:45][in:43][ko:A]

;W[ko];B[fj];W[ek];B[fh];W[fg];B[gg]
C[White resigns because Black's group will connect to the upper
side, either by capturing 165, or by playing one point above
108 and capturing White's seven stones. In either case White's
upper right group can't get two eyes and will die.  
])
(;B[re]))
(;B[qh];W[og];B[mh];W[nj];B[lj];W[nl];B[np];W[mp];B[no]))
(;W[md]))
(;W[pi]))
(;B[di];W[dj];B[ch];W[bi];B[ck];W[dh];B[ei];W[bh];B[fj])
(;B[di];W[dj];B[ch];W[ck];B[bi];W[bj];B[ci];W[dk];B[el]LB[el:30][dk:29][bj:27][bi:26][ck:25][ch:24][dj:23][di:22][ci:28][dl:20][ej:19][ge:18][dc:17][cd:16][cc:15][ee:14][fc:13][cj:12][cf:11][qj:10][pf:9][qe:8][jp:7][qm:6][nq:5][dn:4][fq:3][nd:2][qf:1]
))
(;B[fd];W[gd];B[fe];W[ec];B[dc];W[dg];B[ce];W[be];B[df]
;W[bf];B[bd];W[fg];B[gf]LB[gf:26][fg:25][bd:24][bf:23][df:22][be:21][ce:20][dg:19][dc:18][ec:17][fe:16][gd:15][fd:14][fc:13][cj:12][cf:11][qj:10][pf:9][qe:8][jp:7][qm:6][nq:5][dn:4][fq:3][nd:2][qf:1]
)
(;B[fd];W[gd];B[fe];W[cc];B[ec];W[gc];B[cd];W[bd];B[bb]
;W[bc];B[cb];W[ch]LB[ch:25][cb:24][bc:23][bb:22][bd:21][cd:20][gc:19][ec:18][cc:17][fe:16][gd:15][fd:14][fc:13][cj:12][cf:11][qj:10][pf:9][qe:8][jp:7][qm:6][nq:5][dn:4][fq:3][nd:2][qf:1]
))
(;B[pi]LB[nf:A]
))
