(;GM[1]FF[4]SZ[19]AP[SmartGo:3.1.3]CA[utf-8]
GN[Game_005]
PW[AlphaGo Zero]
PB[AlphaGo Master]
KM[7.5]
RE[W+R]
RU[Chinese]
TM[7200.0]OT[3x60 byo-yomi]MU[0]MU[0]MU[0];B[dp];W[pd];B[cd];W[pp];B[fd]
;W[cq];B[cp];W[dq];B[fq];W[eq];B[ep];W[fr];B[dj];W[nc];B[md];W[hc];B[qq]
C[As in game 3, Master jumps into the 3-3 in the corner.];W[qp];B[pq];W[op]
;B[oq];W[np]
C[Up to White 22, this is exactly the same as game 3.];B[nq]LB[mr:A][nq:B][mp:C]
C[In game 3, Black played at A instead of B. In the game Black has a follow-up move at C, so with B, Black has increased the value of the next move on the lower side. 
]
;W[qi]LB[mp:A][nq:B][mr:C]
C[As in game 3, White plays an extension on the 3rd line. While Black has a big move at A, the lower side as a whole is a relatively small area, so Black should not be playing at A soon, and the difference between having a Black stone at B or C will not make much of a change to how the opening is played.  ]
;B[nh]LB[oi:A]
C[In game 3, Black played the capping move at A. Erasing from the 6th line with 25 is a kind of move that Master seems to like to play, and a similar example can be found in Black 13 of game 34 of the Master series. ]
;W[nd];B[me];W[pg];B[mc];W[dd]LB[hc:A]
C[White's tsuke at 30 can be called a favorite move for Zero, and is seen in combination with the stone at A. Black can be expected to play a hane from above or below. ]
(;B[cc]LB[de:A]
C[With 31, playing at A first was also seen in this series, leading to the same local result. Black's other option was to hane underneath, which Master did not play (see var). ]
;W[dc];B[de]LB[cc:A][de:B]
C[The order of Black A and B seems to make little difference, as it becomes this shape in either case. ]
;W[cb]LB[ce:A]
C[When White hanes at 34, this threatens to cut at A next. ];B[cf];W[eb]
TR[mc]
C[White has a very low position that might seem painful, but when I consider the fact that Black has invested a move to play the marked stone to attack on the upper side, and that the UL corner was originally Black's corner enclosure, this is an even result. ]
(;B[of]
C[Black can force White to connect on the first line on the upper side, but it is not necessarily good for Black (see var). ]
;W[pf];B[pc]TR[nc]
C[Black 39 is a probe that looks to take advantage of White's damezumari with the marked stones. ]
;W[ne];B[nf]
(;W[qc]TR[nc]
C[White 42 solves White's damezumari problem with the marked stones (see var). ]
(;B[gc]
C[Black still has some aji in the UR corner (see var), but building Black's moyo is much more important. ]
;W[gb];B[hd];W[ic];B[id]
C[Black connects to the right, and has a thick wall that works well with the Black moyo. White has a lead in territory. I think this is about even, and would be willing to continue for either side. Maybe I would continue with White . ]
LB[el:A];W[mf]
C[White 48 is a truly suprising move, and it seems unreasonable. ];B[mp]
LB[mg:A]
C[Black 49 builds on the relatively small lower side, and has the bad effect of pushing White into the center, which is where Black should be trying to build it's moyo. Black should have simply played at A. ]
;W[mo];B[lo];W[lp];B[mq];W[ln];B[ko];W[mn]LB[mp:A]
C[The exchange starting with Black A was from the wrong direction, and reduced Black's moyo in the center. ]
;B[mg];W[lf];B[lg];W[kf];B[kg];W[jf];B[jd]LB[mf:A][mp:B]
C[White's cut at A is not working, as White's group cannot escape. This is a strange sequence, in which White apparently made a mistake with A and is losing the fight in the center, while Black has responded with a mistake at B that gave most of Black's profit back to White by playing from the wrong direction. ]
;W[jg];B[jh];W[ih];B[ig];W[fc];B[ii];W[hh];B[hi];W[gf];B[if];W[gd]LB[mf:A][mp:B]
C[With both sides playing what I would call mistakes at A and B, the game still seems to be about even. ]
(;B[bq]TR[ln:mo][ko][mp:mq]
C[The marked exchange is forcing Master to change it's game plan with Black 75 (see var). In order to justify the marked exchange, Black must build on the lower side. ]
;W[br];B[gr]LB[bq:A][gq:B]
C[When Black plays the hane at A first, White cannot cut at B to capture the Black stone at 77. ]
;W[bp];B[er];W[fp];B[gq]
(;W[cn]LB[er:A][cr:B]
C[When Black cut at A, Black was looking at the squeeze at B (see var). White 82 is a good move that makes it less attractive for Black to play the squeeze. ]
;B[bo];W[aq];B[co]LB[cn:A][lp:B][fp:C]
C[The stone at A has been cut off, but with the cutting stones at B and C, White has potential to fight aggressively in this area, so White's play at A was setting up the following invasion. ]
;W[io]TR[ko]
C[White 86 looks at the damezumari of the marked Black stones, and is a good shape move.]
;B[kn];W[km]
(;B[jn]
C[Being forced into this bad shape is painful for Black. The variation shows another way for Black to play. ]
;W[gp]LB[fp:A][en:B][iq:C]
C[With 90 White mobilizes the stone at A, looking at follow-up moves such as B or C. To quote Cho Chikun 9P, fighting in the opponent's moyo should not be a passive thing. One should try to find the relatively weak groups and attack to make a living shape.  ]
;B[dn];W[il]LB[lp:A][kp:B]
C[White 92 is a loose net. making use of White's stone at A by threatening a squeeze at B. ]
;B[jm];W[jl];B[kl];W[lm];B[hn];W[hm];B[gn];W[in];B[kp]LB[gn:A][kk:B]
C[The idea behind Black A was to play 101 with sente, thus settling this position on the lower side, and then to pull back at B and cut White off. ]
;W[fn]TR[im]
C[White must connect at the marked point, but playing at 102 first was a sharp move. ]
;B[fm];W[im]
(;B[kk]TR[fm]LB[hp:A]
C[One reason that it was good for White to play the marked exchange is that Black cannot hane at A with 105 to capture the 3 White stones (see var). ]
;W[em]TR[fn]
C[Continuing from the marked attachment, White 106 was another sharp move. ]
(;B[en]
C[Black had no choice but to cut here (see var). ];W[fo]
(;B[fl]TR[gn]
C[Black sacrifices the marked two stones with 109, as saving them would be dangerous (see var). ]
;W[hq]TR[gm]
C[White forces with 110, threatening Black on the lower side and setting up eyeshape with the marked cut. ]
;B[hr];W[iq]
(;B[on]TR[gn]
C[Black still cannot save the marked stones (see var). ];W[jr];B[kr];W[ro]
LB[pm:A]
C[I question why White did not play at A, which seems to be the better move here. ]
;B[dr];W[cr];B[jq];W[jp];B[kq];W[ir];B[fs];W[gm]
(;B[ol]TR[km][ln][mo]
C[Black cannot kill the White group in the center (see var). Black 125 is a big move that reduces White's right side and threatens to cut off the marked stones. ]
;W[pm];B[om];W[di]TR[em]
C[White attacks on the left side with 128. There is some bad aji with the marked stone, and Black's UL corner group is not fully alive yet. ]
(;B[ei]
C[Black 129 is the strongest move, while Black could have connected with a hane underneath (see var). ]
;W[dg];B[qk];W[rq];B[ci];W[cg];B[qn];W[rn];B[bg];W[bh];B[bf];W[ch];B[bi]
;W[eh];B[dh]LB[eg:A][ah:B]
C[Is White plays submissively with something like A, Black can connect underneath at B. ]
;W[fi];B[fh]
C[A huge ko starts. ];W[di];B[rr];W[ej];B[qm];W[cl]TR[cf][dn]
C[White's group in the lower right is dead, and Black's left side moyo is gone, with the two marked groups in danger of dying. This looks like it might be close to an even trade, depending on how the fight on the left turns out. ]
;B[eo];W[ho];B[cm]
C[Black is alive with 153. ];W[pk]
(;B[rm]
C[I cannot understand why Black did not play more strongly on the right side (see var). ]
;W[bm];B[dm];W[dl];B[ek];W[cj];B[dk];W[bj];B[gh]LB[ji:A][fj:B]
C[Black 163 gets rid of the bad aji at A, and sets up to connect from the left side with B, thus helping out the Black group in the LL corner. ]
;W[pl];B[pn];W[bb]
C[White kills Black in the UL corner, and most of the fighting is over now. The game is very close. ]
;B[qj];W[pi];B[ge];W[fe];B[gc];W[qr];B[pr];W[gd];B[ai];W[ah];B[gc];W[sr]
;B[rs];W[gd];B[qd];W[oe];B[gc];W[qs];B[ps];W[gd];B[hp];W[ip];B[gc];W[kj]
;B[lj];W[mj];B[lk];W[gd]
(;B[qe]
C[I find this ko threat to be questionable, and I will call it the losing move, as it lost an opportunity to reduce White's UR corner (see var). ]
;W[qb];B[pb];W[oh];B[ng];W[pa];B[gc];W[ni];B[li];W[gd];B[rc];W[rb];B[gc]
;W[ed];B[re];W[sd];B[pj];W[oj];B[ok];W[ob];B[pe];W[mi];B[hg];W[ri]
C[Black is trying to force White to add stones to capture the marked group, but is is amounting to much. ]
TR[qe];B[rg];W[rk];B[rj];W[sj];B[ql];W[qg];B[rh];W[qh];B[od];W[oc];B[fg]
;W[ff];B[eg];W[ef];B[gd];W[aj];B[mk];W[pd];B[kb]
C[All of the big endgame moves have been played. White has a small lead. ]
;W[ds];B[hs];W[el];B[an];W[cs];B[es];W[ap];B[fj];W[mb];B[lb];W[bl];B[bn]
;W[jc];B[kc];W[sk];B[sl];W[ei];B[gj];W[ja];B[bc];W[df];B[ma];W[nb];B[jb]
;W[ib];B[jk];W[hk];B[rf];W[sh];B[ga];W[fa];B[og];W[si];B[hf];W[sg];B[hj]
;W[ik];B[am];W[ks];B[ls];W[js];B[fk];W[rl];B[sm];W[lr];B[ms];W[ij];B[jj]
;W[lh];B[kh];W[mh];B[sc];W[sb];B[rd];W[sf];B[ea];W[fb];B[ha];W[hb];B[ck]
;W[bk];B[na];W[oi];B[ce];W[ag];B[al];W[gl];B[ka];W[ia];B[lq];W[se]
C[W+1.25 (3.5)])
(;B[qb];W[rc];B[gc];W[oh];B[ng];W[gd];B[ob];W[rb];B[gc];W[ed]LB[qb:A][ed:B]
C[When Black plays at A, Black is not only setting up a number of valid ko threats, but also Black is reducing White's corner territory. White finally has to protect at B to capture Black in the UL corner. ]
;B[qe];W[pe];B[ra];W[oc];B[pb];W[re];B[nb];W[lb];B[kc];W[kb];B[mb];W[gd]
;B[hg];W[pj];B[ri];W[rh];B[fg];W[ff];B[eg];W[ef];B[jc];W[jb];B[rj]
C[This is close and looks like Black wins by a small margin. ]))
(;B[qj];W[pl];B[pn];W[ql];B[rl];W[pj];B[rm]LB[qj:A][ri:B]
C[When Black bumps against White at A, I expect this sequence to follow. Black has a big follow-up move at B, and this is better than the game for Black. ]
))
(;B[ci];W[ch];B[dh];W[ei];B[cj];W[dg];B[bh];W[eh];B[cg];W[oo]LB[ci:A]
C[If Black plays the hane underneath at A, Black can connect underneath. The game is close in either case, so it is hard to judge the validity of this variation for Black compared to the actual game. ]
))
(;B[jo];W[ip];B[ho];W[el];B[fk];W[cm]LB[ho:A][el:B]
C[If Black persists in trying to kill White with A, White has the forcing move at B and can destroy Black on the left side. ]
))
(;B[gm];W[jr];B[kr];W[fs];B[ir];W[jq];B[js];W[kq];B[lq];W[lr];B[ls];W[ks]
C[While this is a ko, it is not feasible for Black, as Black is going to lose too much on the lower side. ]
))
(;B[gm];W[hp];B[iq];W[el]LB[gm:A][cm:B]
C[If Black connects at A, White can extend here, making miai of B and the center. ]
;B[dm];W[ji];B[kh];W[gi];B[gh];W[fk];B[fl];W[ek];B[gk];W[hj];B[hg];W[gj]
C[White wins]))
(;B[fo];W[hp];B[en];W[hr];B[fs];W[jr]
C[ ];B[dr];W[cr];B[ds];W[lq]LB[fo:A][hp:B][jr:C]
C[If Black wedges at A, White can force with B, and then attack Black on the lower side. With White C, the corner and side become miai, and Black's position collapses. ]
))
(;B[hp];W[ho];B[go];W[fo];B[gm];W[hq];B[ip];W[jp];B[iq];W[kq];B[lq];W[jo]
;B[lp];W[hr]LB[hp:A][fo:B]
C[When Black tries to cut with A, White can get an extra liberty with the atari at B, and Black's position on the lower side collapses. ]
))
(;B[jm];W[jn];B[kl];W[lm];B[kp];W[im];B[jl];W[fo];B[dn];W[iq]TR[cn][lp]LB[jm:A]
C[When Black plays strongly at A, White can make use of aji with the marked stones to counter-attack and make shape. ]
;B[hp];W[kq];B[lq];W[ho];B[dr];W[cr];B[ir];W[jr];B[is];W[em]TR[kq][jr]LB[ip:A]
C[White's marked stones are not connected to the main group yet. However, White can force Black to answer on the left, and when White returns to connect at A, White will have room for eyes. ]
))
(;W[bo];B[cr];W[aq];B[dr]LB[bo:A][cr:B]
C[If White extends at A, this will become a low and painful shape when Black squeezes at B. This is bad for White. ]
))
(;B[gr];W[gq];B[fp];W[hr];B[gp];W[gs];B[fi]TR[ln:mp][ko][mq]LB[gr:A][hn:B]
C[If I were allowed to take the marked exchange away, I would start with Black A to play this sequence, and without the marked stones I would say that Black has a good position, but with the marked exchange this is not working for Black. The marked exchange increases White's potential on the right side, and also makes it easier for White to reduce Black's left side moyo with a play at B. ]
))
(;B[qd];W[oe];B[qb];W[rc];B[ob];W[rb];B[qe];W[pe];B[ra];W[oc];B[pb];W[re]
;B[nb]LB[qd:A]
C[This is an example of how Black can use the cut at A to reduce White's territory. ]
))
(;W[qd];B[nb];W[ob];B[oc];W[od];B[pb]
C[This is an example of how Black can take advantage of White's damezumari to reduce the corner territory. ]
))
(;B[fb];W[gb];B[fc];W[fa];B[he];W[bc];B[bd];W[ac]LB[fa:A][ee:B]
C[Although White was forced to connect on the first line at A, White is fully alive in the corner and Black has a weakness at B, so this is not so good for Black. ]
))
(;B[dc];W[ec];B[ed];W[de];B[cc];W[fc];B[gd];W[hd];B[ff];W[gc];B[df];W[kc]
LB[dc:A][ec:B]
C[Whe Black plays at A, White's only option seems to be to answer at B, and I would expect something like this variation. White has potential to attack Black's group on the right, and this is not bad for White. ]
))

