
(;GM[1]ST[0]SZ[19]CA[UTF-8]FF[4]AP[GOWrite:3.0.10]KM[7.5]VW[]GN[2018-10-28a]PW[ ]PB[ ]PM[2]RU[AGA (Area)]FG[259:]DT[2018-10-28]
;B[pd];W[dd];B[cq];W[pp];B[fc];W[cf];B[jd];W[qf];B[nc];W[pi];B[nq];W[pn]
;C[This attachment is unusual. It is normally played when there is a white pincer and Black wants to make shape in a confined space.]B[pq]
;W[qq];B[qr];W[qp];B[or];W[cn];B[fp];W[ck];B[fe];W[hq];B[gq];W[hp];B[kq];W[fo];B[eo];W[gp];B[fq];W[en];B[do];W[dn];B[fn];W[go];B[fm];W[hm];B[fk];W[hk];B[fi];W[di];B[pf];W[qe];B[qd];W[pe];B[oe];W[of];B[nf];W[pg];B[ng];W[fg]
;LB[hj:A]C[POINT 1
Attaching to the white stone at A is better here. Black is leaving behind weaknesses.]B[hi]
(
;VW[]PM[2]FG[259:]
;W[hg]C[White could attack at the weak point immediately if he is happy to fight.]
;B[eh];W[ef];B[ji];W[gd];B[gc];W[ec]
;TR[ef]C[Dangerous. White has a strong wall here. The marked stone makes a huge difference.]B[cc]
;W[eb];B[be];W[bf];B[pl];W[nm]
(
;LB[ok:A]C[The knight's move is either an attacking move or a flexible shape move to get out fast by sacrificing something. Here, the weakness at A is a burden.]B[nk]
;W[ni];B[dl];W[cl];B[jg];W[gj];B[gi];W[fj];B[dh];W[ci];B[ce]
;W[de]TR[ef]C[The marked stone protects the cutting point.]
;VW[]PM[2]FG[259:]
;C[POINT 2
What is the status of the corner?
This is a good point in the game for White to spend time thinking.

This position comes up in real games because it arises from a popular joseki. It is a standard book position, eg. page 75, problem 105 in Get Strong at Life and Death by Bozulich, Kiseido.
Studying book problems is a good way to get stronger. Reading this out in a game is quite a challenge.]B[bb]
(
;W[hd];B[ic];W[fd];B[qm];W[qn];B[qj];W[qi];B[ik];W[hl];B[rd];W[rk];B[lk];W[rm];B[sg];W[rg];B[rl];W[qk];B[pk];W[rj];B[bo]
;VW[]PM[2]FG[259:]
;W[ih]C[White thinks he is behind and thus needs to kill the whole black group. However, ...]
;C[This is a critical point in the game. Again, White should take time to carefully consider his plan.]B[hj]
(
;W[ii]C[POINT 3
White should capture the four black stones instead.]
;B[ij]
(
;W[jh]
;C[Black saves the cutting stones.]B[ej]
;W[gk];B[ei]
(
;W[ch];B[fl];PM[2]FG[259:];W[dk];B[ek];W[km];B[mm];W[kk];B[jl];W[kl];B[jm];W[jo];B[kn];W[jn];B[kj];W[ln];B[ko];W[kp];B[lo];W[lp];B[mo];W[mp];B[mn];W[rr];B[lr];W[jq];B[jr];W[ir];B[bn];W[bm];B[hc];W[ki];B[jj];W[kf];B[ke];W[lf];B[me];W[nl];B[ml];W[pm];B[pj]
;W[bd]C[This is the move that White read out earlier. It leads to Black living, but there is a killing move instead.]
;B[cd];W[ae];B[bc];W[ad];B[ac];W[af];B[db];W[ca];B[da];W[ba];B[aa];W[ha];B[ia];W[ib];B[hb];W[ga];B[jb];W[co];B[cp];W[an];B[ql];W[sl];B[rn]
)
(
;VW[bg:jo]PM[1]FG[259:]
;W[fl]C[White should probably play safe and capture the two black cutting stones. Otherwise, White will have two weak groups (in the centre and on the right).]
;B[ch];W[bh]LB[hc:A]
)

)
(
;W[ei]
;VW[bg:jo]PM[1]FG[259:]GOWRITEFG[includePastCount:1]
)

)
(
;W[ei]
;VW[bg:jo]PM[2]FG[259:]GOWRITEFG[includePastCount:1]
)

)
(
;VW[aa:ef]PM[2]FG[259:]
;W[bd]C[White considered this attack and read out that Black lived. Indeed, that is the game sequence at 146.]
;B[cd];W[ae];B[bc];W[ad];B[ac];W[af];B[db]
)

(
;VW[aa:ef]PM[2]FG[259:]
;W[ca]LB[df:A]C[The killing move. Black's invasion requires a weakness at A. When there is no weakness, Black should die.]
;B[ba];W[bd];B[cd];W[ae];B[bc];W[ad];B[ac];W[af];B[db];W[da]
)

)
(
;C[My first choice\: attach to the strong white stones.]B[oj]
(
;W[oi];B[nj];W[ni];B[mj]
;VW[li:qn]PM[2]FG[259:]GOWRITEFG[includePastCount:5]
)
(
;W[pj];B[ol];W[nl];B[ok]
;VW[li:qn]PM[2]FG[259:]GOWRITEFG[includePastCount:5]
)

)

(
;B[nl];W[ml];B[nk]
;VW[li:qn]PM[2]FG[259:]GOWRITEFG[includePastCount:3]
)

(
;B[ok]
;VW[li:qn]PM[2]FG[259:]GOWRITEFG[includePastCount:1]
)

)
(
;W[gj];B[hn];W[in];B[im];W[jm];B[il];W[hl];B[gn];W[io]
;VW[ei:jp]PM[2]FG[259:]GOWRITEFG[includePastCount:9]
)

)
