(;GM[1]FF[4]SZ[19]AP[SmartGo:3.1.3]CA[shift_jis]
GN[180111Rin]
PW[Rin Kaiho]WR[9P]
PB[Michael Redmond]BR[9P]
EV[Gosei C]RO[1]
DT[2018-01-11]
KM[6.5]
RE[B+R]MU[0]
C[My opponent Rin Kaiho is famous among go players. It is worth mentioning that he has taken more than 30 titles, and has set a record by participating in the Meijin league for a total of 39 years. He has more than 1400 wins in official tournament games. ]
;B[pd];W[dc];B[qp];W[dp];B[fq];W[cn];B[lq]
C[With Black, I played the mini-Chinese, which I had been studying a few days before this game. This does not seem to be a favorite opening for AlphaGo, but it did show up in two of the self-played games, with White's UL corner stone at A. 
]
LB[dd:A];W[qj]
C[White splits the side, the most popular move for White when Black plays the mini-Chinese. White A is also a common move. AlphaGo with White will invade at B. ]
LB[qf:A][qc:B];B[ce];W[dh];B[qf]
(;W[pn]
C[While the most common move for White was a 2-space extension (see var), White's high extension is an attempt to settle White's group on the right with sente, so that he can switch to the left side. ]
(;B[qn]
C[While it would be normal for me to answer with a shimari (see var), I did not want to lose the initiative. As I have a strong position on the right side of the board, it seems likely that I should be able to fight strongly here. ]
;W[qm];B[pm]
(;W[on]
C[White extending up is the strongest move, while pulling back on the 3rd line was White's other possible choice (see var). ]
;B[ql];W[rm];B[rn];W[rl];B[pl];W[qk];B[ok];W[pp]
(;B[qq]
C[Black lives in the corner. It would be careless to play a hane with this move (see var). ]
;W[lo];B[oi];W[rh];B[jp]LB[pp:A][qq:B]
C[I start to surround territory while threatening to attack White on the lower side. Black has kept the initiative in this fight, while White has gained significant profit by forcing me into a low position with the exchange of A for B. The game is still even. ]
;W[jo];B[io];W[jn];B[in];W[im];B[ip];W[jl]
(;B[rg]
C[Now I start to attack on the right, but this is inconsistent with my previous play on the lower side. In the sequence of Black A to White B, I have gained territory, while White has built a strong position in the center. This weakens my group at C, and I should play defensively on the right (see var).  ]
LB[jp:A][jl:B][oi:C];W[pg];B[km];W[jm];B[qg];W[ph];B[ng];W[nh]
(;B[sm]
C[The timing of this hane is delicate, as it can have a positive or negative effect on White's eyes, depending on White's shape on the side. I must play it now, because the fight in the center is about to heat up and potentially spread into the upper side, after which this hane will cease to be forcing. The variation shows some of my reading as I made this choice.]
;W[sk];B[oh];W[og];B[mh];W[ni];B[pi];W[qh];B[rj]LB[rk:A]TR[oh:oi][pi]
C[Black can force with this tsuke now. If Black gets to cut at A next, this will be a big territorial gain, and will also reinforce my connection to the marked stones. ]
;W[rk];B[mj]TR[rj:rk][sk][sm]
C[The marked exchange works to locally kill the White group, and if White breaks out of the net in the center, I will be able to win the semeai and capture White on the right. To know this I had too read out a 40 move sequence, but this was relatively easy when most of the moves were forced. White's first move was the turning point. ]
(;W[pk]TR[pl:pm][ql]
C[White was right to offer White's 2 stones in the center in a trade for the marked Black stones, but he made a mistake in the order of play. One variation shows the semeai when White breaks out of the net, and another shows White's correct play. ]
;B[nm]LB[pk:A][nm:B][mo:C]
C[Black saves the marked cutting stones. The exchange of White A for Black B was premature, and will give me potential to cut White off with C as the fight in the center continues. ]
TR[pl:pm][ql];W[nj];B[oj]
(;W[mg]
C[This cut is a move that White wanted to avoid playing, but the variation is not good for White either. ]
;B[nf];W[mi];B[li];W[nk];B[nl];W[mk];B[lh];W[lk];B[mo]TR[on:pn][pp]
C[White has avoided being squeezed into a dumpling shape in the center, but Black's outside group has been reinforced with the forcing move at A. Black has captured the marked stones. ]
LB[lh:A];W[pe];B[qd];W[oe];B[me];W[mp];B[no];W[lp];B[np];W[od];B[pb];W[ob]
;B[pc];W[md];B[ld];W[lc]
C[White's double hane is the tesuji to make shape for White on the side. ]
;B[mc]
(;W[mb]
C[White's hane underneath was a tesuji, but was not as safe as simply connecting (see var). I suppose Rin felt that he must try to put pressure on me, as he was behind. ]
;B[nd]
(;W[nc]
C[Again, Rin challenges me with a dangerous move, discarding the safer connection (see var).  ]
;B[oc]LB[md:A]
C[I cut. Connecting at A with this move would be a local loss for Black. ]
(;W[md]
C[White sacrifices the entire right side. This is actually better than saving it as in the variation. ]
;B[ne];W[le];B[mc];W[mm];B[nn];W[md];B[lf];W[kd];B[kf];W[mq];B[dq];W[cq]
;B[cr];W[eq];B[dr];W[ep];B[er];W[if];B[ih];W[jg];B[jh];W[kg];B[lg];W[pa]
;B[qa];W[oa];B[rb];W[fp];B[gq];W[gg];B[ie];W[he];B[je];W[of];B[mf];W[hd]
;B[jc];W[ic];B[cc];W[cb];B[db];W[bc];B[cd];W[eb];B[bh]
C[I live on the left side, enlarging my lead in territory. White's group on the right has only seven liberties, and White will not be able to win a semeai with the Black group in the center. ]
;W[ig];B[hi];W[gi];B[gj];W[hh];B[ij];W[kh];B[ki];W[ji];B[kk]LB[ii:A][kl:B]
C[Black makes miai of A and B. ];W[qb];B[qc];W[jj];B[kl]TR[nh:nk][mi][lk:mk]
C[Black has captured the marked stones. ];W[bf];B[bb];W[da];B[cg];W[bi];B[ci]
LB[ch:A][bg:B][bj:C][ba:D]
C[Assuming the sequence White A, Black B, White C, Black D, Black is alive in the corner. White resigns. ]
)
(;W[ne];B[nb];W[mf];B[lf];W[of];B[mq]
C[The double threat of A is not good enough for White. White captures the cutting stones, but Black has enough territory to win. ]
LB[ne:A]))
(;W[oc];B[kc];W[lb];B[mq]LB[oc:A][mq:B]
C[If White connects at A, Black will simply take sente to get the big point at B. Black has a sizable lead in territory. ]
))
(;W[nd];B[kd];W[mb];B[kc];W[lb];B[mq]LB[nd:A][mq:B]
C[White can easily live by connecting at A, but when Black plays at B, Black has a large advantage in territory. ]
))
(;W[nk];B[mi];W[ml];B[mm];W[mk];B[lk];W[ll];B[kl]LB[nk:A][mi:B]
C[If White simply pushes through at A, Black will connect at B and squeeze with this sequence. ]
;W[kk];B[lm];W[lj];B[nl];W[lk];B[mo]TR[on:pn][pp]
C[Black captures the marked stones with this attachment. ];W[oe];B[jk];W[jj]
;B[ik];W[ij];B[hk]TR[im:jm]LB[jk:A]
C[Black's cut at A is a strong attack, and White's marked group is probably going to die. Black has an advantage. ]
))
(;W[mg];B[nf];W[nj];B[nk];W[mi];B[li];W[lh];B[oj];W[mh];B[lj]
C[White escapes the net but has bad shape. White cannot afford to allow Black to take the vital point at A next. ]
LB[kh:A];W[kh];B[pf];W[ml];B[ll];W[mm];B[mk];W[ki];B[lm];W[ln]
C[Both sides have been surrounded, and the semeai begins. ];B[qi];W[ri];B[sh]
;W[si];B[sg];W[kk];B[lk];W[kj];B[of];W[sj]
C[After this, it is just a matter of filling liberties. ];B[pk];W[om];B[sn]
;W[qo];B[ro];W[po];B[pj];W[rp];B[rq];W[kn];B[sp];W[nl];B[sl]
C[Black wins by one move. ])
(;W[nj];B[nk];W[nf];B[mg];W[pk];B[mi];W[ol]LB[nj:A][pk:B][qc:C]
C[If White pushes out at A once, and then plays at B, the trade is forced. White captures the marked cutting stones. Black has captured three stones in the center, but this group will not function as thickness, as there are no weak White groups. In fact, Black does not even have two eyes. Also, White still has some potential to invade at C. Overall, White has a slight advantage. ]
TR[pl:pm][ql]))
(;B[oh];W[og];B[mh];W[ni];B[pi];W[qh];B[mj]LB[oh:A][mj:B]
C[In the center, the good shape move for Black is to push through at A and set up a squeeze with B. ]
;W[mg];B[nf];W[nj];B[nk];W[mi];B[li];W[lh];B[oj];W[mh];B[lj];W[kh]LB[mg:A][oe:B]
C[White can escape the net by cutting at A. Next White threatens to jump out at B, which will give White sizable profit on the upper side. ]
;B[pf];W[sk];B[rj];W[sm]LB[pf:A][sk:B][sm:C]
C[Black must protect at A, and White can live with the tesuji at B. As the fight heated up and a move toward the upper side became big, Black lost the opportunity to force with a hane at C. ]
))
(;B[km];W[jm];B[pg];W[rg];B[ed]LB[pg:A][ed:B]
C[Black should have protected the center with A, allowing White to live on the side, and the game is about even when Black switches to the left with B. ]
))
(;B[pq];W[qq];B[rp];W[oq];B[pr];W[np]LB[pq:A][qq:B]
C[If Black plays at A, White can cut once at B and use that stone as a sacrifice to make good shape on the outside. This will be good for White. ]
))
(;W[ql];B[rn];W[om];B[po];W[on];B[np]LB[ql:A][rn:B][qf:C][ok:D]
C[If White pulls back at A, I will simply play at B, allowing White to capture with a ladder. Black's territory in the LR corner is big and has no weak points. Black C is well positioned at a distance from White's solid shape. Black can later peep at D, which is annoying for White. This is a good result for Black. ]
))
(;B[op];W[qo];B[rp];W[cd]LB[op:A][qo:B][ql:C]
C[If Black answers at A, White will kick once at B and then switch to the upper left. Black can later invade at C, so White's group is not completely settled, but White will be able to make shape for this group in the center and the focus of the game is already shifting to the left half of the board, which works well for White. ]
))
(;W[qm];B[pn];W[qn];B[qo]LB[qm:A][pn:B][lq:C][fo:D][pm:E]
C[If White extends at A, Black will play at B to expand the lower side, making good use of the stone at C. Black has follow-up moves at D and E that will expand Black's moyo, and the lower side continues to be an important area. ]
))

