(;GM[1]FF[4]SZ[19]AP[SmartGo:3.1.2]CA[shift_jis]
GN[2018-01-25a]
PW[Michael Redmond]WR[9P]
PB[Mizokami Tomochika]BR[9P]
EV[Kisei FT ]RO[4]
DT[2018-01-25]
KM[6.5]
RE[W+3.5]
RU[AGA (Area)]MU[0]
C[Commentary by Michael Redmond 9P

In the fourth round of the Kisei FT elimination tournament, my opponent is Mizokami 9P. As a young player, Mizokami took a few of the young players' titles. He has also participated in the Kisei, Meijin, and Honinbo final leagues. ]
;B[cp];W[qc]
C[In this game I am avoiding playing a star point, partly because the early invasions to the 3-3 point have become popular but I still don't understand why, apart from the fact that AG likes it. I can't completely refute it either. The better reason is that I am trying to challenge myself by trying openings that I am not familiar with, hoping to push myself into a better understanding of the game. ]
;B[qp];W[cd];B[eq];W[oq];B[pn]TR[cp][eq]LB[lp:A][ec:B]
C[Black plays a keima that is liked by AlphaGo, but I think maybe not in this board position. With the marked shimari giveng Black a strong position in the LL corner, I would want to play at A or B. ]
;W[kq]LB[kp:A][ec:B]
C[If given another chance to play in this board position, I might choose the high extension at A. I have seen AG play high extensions like this in similar positions, and I like the high move because it gives White light shape. Enclosing the UL corner with a move at B is also feasible for White. ]
;B[ec];W[ic];B[df]
C[This joseki variation has become popular in recent years. There is a ladder involved. ]
;W[ed];B[fd];W[ee];B[dc]
(;W[ef]
C[With this move, White cannot cover in the corner when the ladder favors Black (see var).]
;B[dd];W[de];B[ce];W[cf];B[be];W[dg];B[bd];W[ql]LB[ql:A]
C[The UL corner shape is sometimes called a joseki, but I would usually like it for Black, and avoid playing this way with White. In this board position, it is important that White got sente to play the big point at A, and I think the overall position is about even. ]
;B[pd]LB[ic:A][ql:B][pd:C]
C[When White has an extension on each side, such as A and B, Black C becomes the perfect move to reduce White's potential moyo. ]
;W[qd];B[pf];W[pe];B[oe];W[qe];B[ng];W[pp]
C[White takes away Black's base with this move. ]
(;B[qo]
C[Black cannot extend into the corner with this move (see var). ];W[qq];B[rq]
;W[qr];B[om];W[pj];B[dj];W[cl]TR[ic][dg][ng][dj][cl][om]
C[Both sides have three unsettled groups (marked), making this a complicated position. On the left side, I can make shape with a tsuke at A. I am trying to set up a cut at B to take care of my two weak groups in the upper left. ]
LB[co:A][fc:B];B[ch]TR[ef]
C[Black plays here to prevent White from connecting on the left side and to attack the marked White group. ]
;W[dh];B[di];W[fc]
(;B[gd]
C[Black chose not to capture White's cutting stone (see var). ];W[gc];B[hd]
;W[hc];B[hf];W[gg];B[je];W[kd]
C[With this move, White is alive on the upper side. ];B[hi]
C[White cannot break out in the center, but will have room to make eyes. ]
;W[hg];B[ig];W[fi];B[fj];W[gj];B[gi];W[fh];B[fk];W[ih]
(;B[jg]
C[Instead of cutting (see var), Black extends to make good shape. ]
(;W[bh]
C[This move lost an opportunity to save the marked stone (see var). After this mistake, the game becomes difficult for me.]
TR[cl];B[ci];W[cg]TR[fh]
C[The marked White group is alive. ];B[cn]TR[cl]
C[Black kills the marked White stone. Now Black has a lead in territory, and White must try to attack in the center and on the right. ]
;W[do];B[dp];W[hk]TR[om][pn]
C[White has an advantage in the center, and will eventually try to attack the marked Black group. ]
;B[hl];W[il];B[hm];W[gk];B[fl];W[jk];B[ij];W[gl];B[gm];W[ik];B[fm]TR[cl]
C[While White has built a strong position in the center, Black has completely captured the marked stone. Black still has a lead in territory. ]
;W[qm]
C[White takes away Black's base with this move. Locally, Black cannot make eyes. ]
;B[rr]TR[pp][oq][qq:qr]LB[np:A]
C[Black makes an eye in the corner, and reduces the eyespace of the marked White group. This will make moves such as Black A effective, when Black tries to make shape in the center. ]
;W[ki];B[lg]LB[ji:A]TR[gi:hi][ij]
C[Black plays tightly, protecting Black's group on the upper side. Black is looking at some potential to save the marked stones with a move at A. ]
;W[of]LB[lg:A]
C[Now that Black has a solid shape with A, this cut becomes effective. White will sacrifice this one stone to make territory on the right side. ]
;B[og]
(;W[qf]
C[White sacrifices one stone to get a good shape on the right. escaping would be a mistake (see dia). ]
(;B[nf]
C[It is correct for Black to capture the White stone (see var). ];W[ph]LB[lg:A]
TR[oe][nf:ng][pf][og]
C[While White has gained territory on the right, Black has a strong shape with the marked stones. However, the effect is reduced by the fact that Black has already protected at A, and now has a slightly overconcentrated shape. ]
;B[lc];W[kc];B[lb];W[oc]LB[oc:A]
C[Black is squeezing White's group on the upper side, but most of Black's profit dissappears when White can force with this move at A. ]
;B[nc];W[eb];B[db];W[ea];B[da];W[gb]
C[White is alive. ];B[iq]TR[hn:hp][hr:hs][ir]LB[mq:A][ji:B]
C[Assuming the marked border line, Black has a total of almost 75 points. White has weak points at A and B, and even if White can secure these territories, White will be about 10 points behind before komi. White needs to get some extra value out of an attack on Blacks remaining weak group in the LR corner. ]
;W[jo]TR[pn]
C[White is preparing for a final attack on the marked Black group. ];B[rn]
;W[rs]
(;B[oi];W[oj]TR[qo]LB[oi:A][oj:B][mq:C]
C[Now that Black has peeped at A and White has answered at B. Black has gained some territory but the danger for Black's marked group has increased. ]
;B[pi];W[qi];B[qh];W[ni];B[oh];W[rh];B[rm]
C[Black is actually alive when he plays here, so apparently this was Black's plan when he peeped at A, taking some profit with the sequence to B before making life. However, the game will start to look good for White when I jump in at C. We were both in overtime at this stage of the game, and my opponent did not have enough time to completely assess the position. ]
LB[oi:A][rh:B][ho:C];W[rl];B[so]
(;W[ho]
C[Jumping in here was a huge move, but it was premature, and could have become the losing mistake. I neede to play some forcing moves first to make my lower side safe (see var). ]
;B[mq]
C[Black invades to start a final fight. ];W[rp];B[sr];W[po]
(;B[kp]
C[If Black had answered on the right with this move, I would have been able to settle the lower side with relatively small damage (see var). ]
;W[qn];B[ro];W[lp]
(;B[mp]
C[Black must fight strongly here (see var). ];W[nn]TR[om][pn]
C[White captures the marked stones to save White's group in the corner. ]
;B[mn];W[lo];B[mo];W[nm]
(;B[lq]
C[With this move, I think the attachment underneath was better (see var).  ]
;W[jq];B[ko];W[jp];B[ln];W[im];B[ll]
C[Black has a potential eye on the side with a play at A, and this Black group will not die. ]
LB[kr:A];W[fo];B[gp];W[go];B[dn];W[en];B[em];W[gq];B[gr];W[hq];B[hr];W[fq]
;B[fr];W[ml]
C[White continues the attack by reducing Black's space in the center. ];B[oo]
;W[on];B[op];W[pq];B[lk];W[sm];B[sp];W[km];B[lm];W[kh]
C[White A erases the aji at B, and sets up a peep at B while cutting off Black's group on the lower side. ]
LB[kh:A][ji:B][le:C];B[kj];W[jj];B[nk]
C[Black takes some extra points before living on the side. ];W[nj];B[nl]
;W[mm];B[mk];W[pm];B[or]
C[Black is alive. ];W[le];B[lf];W[nb];B[nd];W[er];B[dr];W[ep];B[es];W[qg]
C[White is threatening to extend at A, which will hurt when the Black group has trouble making eyes. ]
LB[me:A];B[gf];W[jh];B[ob];W[pb];B[od];W[oa];B[pc];W[ob];B[ia];W[ha];B[kb]
;W[jb];B[pg];W[bi];B[bj];W[bf]LB[bi:A][bf:B][ei:C][aj:D]
C[White endgame play at A and B was gote, but gave me the forcing endgame plays at C and D and simplified the game. White's win is secure now. ]
;B[ip];W[io];B[ir];W[lr];B[mr];W[kr];B[nq];W[no];B[np];W[ol];B[ps];W[ei]
;B[ej];W[ae];B[bc];W[aj];B[ak];W[ai];B[bk];W[qs];B[pr];W[hp];B[qh];W[ri]
;B[ja];W[ib];B[ka];W[mb];B[me];W[mc];B[ld];W[ke];B[md];W[kf];B[kg];W[id]
;B[ie];W[jf];B[jd];W[jc];B[if];W[mh];B[co];W[mg];B[mf];W[eo];B[ok];W[pk]
;B[ad];W[af];B[ff];W[fg];B[fe];W[kn];B[kl];W[ms];B[ns];W[hn];B[ma];W[jl]
;B[ls];W[ks];B[is];W[ph];B[ms];W[qh]
C[White gained a point in the final endgame to win by 3.5 pts. ])
(;B[kr];W[lq];B[lr];W[jq];B[jr];W[nr];B[mr];W[gp]LB[kr:A][gp:B]
C[If Black attaches at A, White will force from above and continue to reduce Black's territory with the kosumi at B.]
;B[ip];W[io];B[gq];W[fp];B[fq];W[eo];B[dn];W[nb];B[nd];W[mm];B[ln]LB[mm:A]
C[White finally returns to the center, but it will be difficult for White to make much territory here. The game is close. ]
))
(;B[lq];W[jp];B[kr];W[ko];B[jq];W[mp]LB[lq:A]
C[Cutting at A to connect underneath is not good enough for Black. White gets too much in the center. ]
))
(;B[qn];W[mp];B[np];W[mo];B[lq];W[kp];B[nq];W[no]LB[qn:A][mp:B][oo:C]
C[If Black answers at A, White can close Black in with B. If Black now plays at C to cut White, White will win the semeai. Therefore, Black must try to live on the side. ]
;B[or];W[oo];B[kr];W[jr];B[ks];W[jq];B[os];W[fo]LB[os:A][fo:B]
C[Black can live on the side with the sequence up to A. White then jumps in at B to reduce Black's territory. White has a small lead. ]
))
(;W[rp];B[sr];W[po];B[qn];W[on];B[nn];W[oo];B[pm];W[ho]LB[rp:A][sr:B][po:C][on:D][ho:E]
C[When White cuts at A, Black B is the tesuji to make life. C and D are the forcing moves that I should have played to protect my territory on the lower side. After White E, Black will not be able to pay komi. ]
))
(;B[np];W[nq];B[jp];W[kp];B[io]LB[np:A][io:B]
C[This was Black's chance to force once with A, giving some extra life to the marked Black group. Black can then take the lead with B, and I can find no way for White to kill Black in the lower right. ]
TR[qo]))
(;B[pg];W[od];B[nf];W[nd]LB[pg:A][od:B]
C[If Black connects at A, White can make use of the sacrificed stone a second time with the cut at B. ]
))
(;W[nf];B[mf];W[ne];B[nd];W[od];B[me];W[oe];B[lc]
C[Saving the one stone by extending at A would be a complete failure, even if we assume that Black simply squeezes as in this variation. ]
LB[nf:A]))
(;W[co];B[dp];W[bp];B[bq];W[bj];B[bi];W[cj];B[ci];W[bo]LB[cg:A][hh:B]
C[I should have lived on the left side as in this variation. White has a lead in territory, and the outcome will depend on how much Black can make in the center. ]
))
(;B[hh];W[jg];B[if];W[cg]LB[hh:A][jg:B]
C[If Black cuts at A, White can force with B to give Black bad shape. The White group inside is alive, and Black is left with a weak group on the upper side. ]
))
(;B[gc];W[fb];B[gb];W[gd];B[fe];W[ge];B[ff]LB[gc:A][fg:B]TR[fb:fc]
C[When Black plays at A, the ladder at B favors Black, so Black can capture the marked White stones. White will continue with a net. ]
;W[gg];B[fg];W[fh];B[eb];W[gf];B[fa];W[fc];B[fb];W[eg];B[fc];W[gi]
C[White squeezes Black to make a wall in the center. Black cannot attack strongly on the left, and White has some potential to attack on the right side. This is a good result for White. ]
))
(;B[qq];W[qo];B[po];W[ro];B[or];W[nr];B[pr];W[nq];B[rr];W[ol]LB[qq:A][qo:B]
C[If Black extends at A, White can cut Black with B. Black can live in the corner, but White has a superior position outside. This is good for White. ]
))
(;W[cc];B[dd];W[de];B[ce]LB[cc:A][ef:B]
C[If White covers at A, Black will push through and cut, and Black is threatening to capture three stones with a ladder at B. When this ladder favors Black, this variation is usually bad for White. ]
))

