(;GM[1]FF[4]SZ[19]AP[SmartGo:3.0.1]CA[shift_jis]
GN[2017-02-27a]
PW[Michael Redmond]WR[9P]
PB[Kobayashi Izumi]BR[6P]
EV[Kiriyama B section]
DT[2017-02-27]
KM[6.5]
RE[W+R]
RU[AGA (Area)]
C[W: Michael Redmond 9P
B: Kobayashi Izumi 6P
Commentary by Michael Redmond 9P, hosted by Chris Garlock

This was my first game in the B section of the Kiriyama Cup, and my opponent was Kobayashi Izumi, the daughter of the famous Kobayashi Koichi. In the opening I managed to fit some moves that Master played into my own playing style with some success, so that is what I would like most viewers to focus on in this game. This was my first tournament game this year after waiting for several weeks, and that absence from serious play showed when I fell apart in byo-yomi in the middle game. ]
MU[1];B[dp];W[pp];B[cd];W[pc];B[fc]
C[My opponent plays the 'Master' style big shimari. My plan in this game is to try out Master's moves myself, just to get a better idea about how they work. In the 60 games the AI played, there were several cases in which it had White with this position, so of course I knew where it would play. ]
;W[pe];B[fq];W[nq];B[dj]LB[gd:A][qj:B]
C[Master played White with this opening position twice, game 40 against Meng TaiLing in which it played at A, and game 44 against An SeongChun in which it played at B. I think White has a number of feasible choices now, and that idea seems to be supported by the fact that Master came up with multiple answers. I wanted to control the center but hesitated to play at A, which seems too generous, so I chose a different katatsuki. ]
;W[gp];B[fp];W[gn];B[qj];W[ql]TR[qq]
C[This extension leaves a potential invasion in the corner (marked) but while White is attacking that will not be an issue. ]
;B[qg];W[ph]
C[I continue to try to control the center (see var). ]
(;B[pg]
C[Black is fighting strongly, but with all the White stones in the vicinity, this is now a chance for White to attack. ]
;W[qh]
C[This is not the most elegant of moves, but with support from the neighboring White stones, it becomes White's strongest attack. Black's shape move is to hane on the top of two stones, but that does not work (see var). ]
(;B[rg]
C[As is shown in the var for Black 19, this point on the second line is a vital shape move. If given the chance, Black can hane on top next (see var). ]
(;W[oh];B[rh];W[re]TR[qj]
C[By forcing Black down to the 2nd line I have reduced Black's eye space. Black connection to the marked stone is a bit loose, making it awkward for Black to come out (see var). ]
(;B[og];W[pj]
C[23 and 24 were miai. Black still does not have a living shape. ];B[mg]
;W[ld]
C[My attempts to emulate Master have worked well with my aggressive style in this opening. White gains on the sides as my attack continues. ]
;B[pk];W[qk];B[oj];W[rj];B[pi]
C[I declined to play the safe looking move (see var). ]
(;W[qi]
C[I welcome the ko, as it will give me a lot of profit on the right side. ]
;B[nd];W[ne];B[ri]
C[It is not attractive for Black to simply run away in the center, so she sets up a ko to fix the problem. Black 33 was played to increase the value of Black's ko threat. ]
;W[pj];B[me];W[oi];B[md]
C[White's thickness will make it easier for me to make a territory of the lower right. Black has settled her weak group. Now I have sente to reduce Black's potential in the upper left. ]
;W[od]TR[qd]
C[I played 40 to erase the peep (marked). ];B[nf];W[fe];B[hd];W[he]
C[I attach once, planning to play towards the corner next (see var). ]
(;B[ed];W[id];B[gd];W[if];B[ge];W[gf];B[hg];W[hf];B[jh]
C[Black cannot hope to attack too strongly here, as the Black group on the right is not yet fully alive. ]
;W[kg];B[kh];W[lc];B[ob];W[pb];B[ic];W[jc];B[jd];W[ie];B[jb];W[kc];B[kf]
;W[ib];B[hc];W[ke]
C[Both the Black and White groups are safe now, so Black can switch to the lower side. ]
;B[jp]
C[With strong White groups on the upper and right sides, Black does not have much potential in the center, so I do not need to deal with this attack directly. The time has come to erase the left side. ]
;W[bo];B[bq];W[cl];B[ck];W[el]
C[With a large area in the lower right which is not so easy for Black to invade, White seems to be doing well with territory at this point. ]
;B[fm];W[dk];B[cj];W[ej];B[ei];W[fj];B[fi];W[gj];B[gm];W[gi];B[fg];W[ff]
;B[gh];W[eg];B[hi];W[hj];B[jg]
C[With 91, Black has secured a life for the Black group in the center.  White needs to secure the LR corner area now, after which White will have a lead in territory (see var). ]
(;W[ig]
C[At this point I get greedy, hoping for one more forcing move in the center. ]
;B[hh];W[jj]
C[My expectation that I could force Black to answer this move was not reasonable. ]
;B[hb]LB[mb:A]
C[This move gives Black good aji in the UL corner and threatens to take away White's second eye with A. ]
;W[di]
C[I am being stubborn in my delusion that I can attack Black, and in effect I am just creating more trouble for myself. ]
;B[dh];W[eh];B[fh];W[ci];B[bi];W[ch];B[dg];W[bh]
C[Just looking at the left side, White's sequence from 96 can work, but in fact White needs to live on the upper side too at some point, so I am behind by a move (see var). ]
(;B[bg]
C[Black 105 was a tesuji, but complicated matters, and was not as good as the var for 105. ]
;W[cg];B[ef];W[cf]
C[Black cannot kill the upper side White group (see var). ]
(;B[bf]TR[ee]
C[Black plays 109 to prevent White's cut (marked). ];W[mb];B[bj];W[be];B[ce]
;W[ah];B[bl];W[cm];B[bm];W[bn]
C[White has potential to live by crawling in the corner, and the semeai favors White (see two vars). ]
(;B[df];W[af]
C[If Black tries to kill, it will become a ko (see var). ]
(;B[ak]
C[Black chooses to live and let live. ];W[bd];B[bc]
C[White must simply live (see var). ]
(;W[cc]
C[White 124 was a terrible mistake. Black has a chance to kill (see var). ]
(;B[dc]
C[My opponent saves me by returning the mistake. White was not a good move in any case.  ]
;W[cb];B[bb];W[de];B[dd];W[ab];B[ai];W[ag];B[db];W[ad];B[jl]
C[In the fight starting from 96, White has gained territory but has lost sente. White needs to survive in the center and keep territory in the LR corner, so this will not be easy. ]
;W[cp];B[cq];W[eo]
C[Black can cut White with good shape (see var). ]
(;B[fn];W[fo];B[dn];W[do];B[cn];W[ep];B[er];W[dq];B[dr];W[hn]
C[White is gaining by reducing the lower side Black territory. At this point my plan is to sacrifice the center White group and get good shape on the lower side to secure the LR corner. In doing that, White will be able to take the lead. ]
;B[hm];W[jo]
C[Suddenly the game is looking good for White, just because Black has lost so much on the lower side. ]
;B[in]
C[Black seems to get impatient now, and tries to kill my group. This hastened Black's loss. ]
;W[io];B[ho];W[go];B[hp];W[hq];B[ip];W[kp]
C[After this the sequence is forced, and Black has no escape. ];B[jq];W[kq]
;B[jr];W[im];B[jn];W[ko];B[gq];W[kr];B[hr];W[jm];B[kn];W[km];B[ln];W[lm]
;B[mn];W[hl]
C[White has captured the Black stones in the center (see var). ]
(;B[il];W[gl]
C[Black resigns. ])
(;B[en];W[co]
C[White wins the semeai. ]))
(;B[en];W[fo];B[do];W[dn];B[dm];W[cn];B[em];W[dl];B[im]
C[Black wins.]))
(;B[ad];W[ag];B[cb];W[dc];B[bb];W[ai];B[aj];W[am];B[bf];W[bg];B[ac]
C[Black wins. ]))
(;W[ad]TR[di]LB[jl:A][qq:B]
C[ Black can attack at A or B, and the fight is not over yet. ]))
(;B[bd];W[ag];B[ak];W[ai];B[aj];W[am];B[bf];W[ad]
C[This is an approach ko favoring Black, so locally it is not easy for White. However, if White wins the ko White will get a huge amount of territory, so this var is playable for White. ]
))
(;B[bd];W[aj];B[bk];W[ai];B[df];W[am]
C[White wins the semeai])
(;B[ak];W[bd];B[bc];W[af];B[ad];W[ag];B[ai];W[cc];B[dc];W[cb];B[bb];W[ee]
;B[ii];W[df]
C[Good for White. ]))
(;B[mb];W[ee];B[df];W[de];B[ce];W[bf];B[ih];W[dd];B[cc];W[dc];B[db];W[eb]
;B[cb];W[ec];B[fd];W[be];B[bd];W[ea];B[fb];W[da];B[ca];W[ad];B[ac];W[bb]
;B[ba];W[ab];B[ae];W[bk]
C[After Black takes White's eye with 1, White can cut Black off with 2-6, and then push through at 8. After 14 either the upper side Black group or the corner will die. After White 28 the this will be a yoseko favoring White. ]
))
(;B[ef];W[mb];B[bj];W[dm];B[bl];W[bm];B[ak];W[fn];B[en];W[em];B[hn];W[go]
;B[hq];W[hm];B[qq]
C[Just capturing at 1 makes this very easy for Black. Black wins the semeai with 3. While taking a huge loss on the left White takes the offensive in the center, but that is not good enough. Black is winning after 15. ]
))
(;W[dm];B[fn];W[cp];B[cq];W[lq];B[qq];W[ro]
C[White forces with 1 and 3, forestalling a Black attack on the White group. After White 5 Black has no effective invasion in the lower right, and White is ahead. ]
))
(;B[id];W[ec];B[ed];W[gc];B[dc];W[gd]TR[id][he]
C[Good for White. Note that the marked exchange has given White good shape. ]
))
(;W[ri];B[nh];W[qi];B[jd]LB[ri:A][oi:B]
C[White's stone at A is not efficient, and I would prefer to have it at B to take profit and thickness immediately. ]
))
(;B[qk];W[pl];B[oj];W[og]
C[Black must bump at 1 to secure a good connection. Black cannot make two eyes on the side, and will be forced to spend moves in the center while White builds on the upper and lower sides. ]
))
(;W[rh];B[oh]
C[Good for Black]))
(;B[oh];W[rg];B[rf];W[rh];B[qe];W[og]TR[pe]
C[White's marked stone is at the vital point to destroy Black's shape, and this is good for White. ]
))
(;B[qh];W[pj];B[pi];W[oi];B[qi];W[pk];B[oh];W[ni]LB[og:A][re:B]
C[White has a strong position towards the center. White can force with A or B next, depending on what happens with the upper side. ]
))

