(;CA[utf-8]FF[4]ST[2]RU[Japanese]TC[3]TT[20]C[In this game, Gu Li plays for a moyo with the Sanrensei opening. Master defies common knowledge with White 18 and 20, and goes on to skillfully reduce the moyo in the fighting on the upper and right sides. ]
AP[CGoban:3]SZ[19]GM[1]DT[2017-01-02]PC[The KGS Go Server at http\://www.gokgs.com/]
PB[Gu Li]BR[9p]PW[Master]WR[9p]KM[6.5]TM[60]RE[W+Resign]MULTIGOGM[1]
;B[pd];W[dd]C[Some 'Master' openings have been added as a var for Black's next move. ]
(;B[pp];W[dp];B[fc];W[cf];B[fq];W[dn];B[pj]TR[ec][fc][eq][fq]C[Gu Li plays for a big moyo. Vars added to show how playing away from the kakari stones (marked) works in this kind of fuseki.]
(;W[nq]C[The game move.];B[lq]TR[fq];W[qq];B[qp];W[pq];B[op]C[White has a choice of three moves that are played as joseki(two vars added). ]
(;W[rq];B[np]C[Now Master diverted from the joseki (see var). ]
(;W[mq]TR[nr]C[White 18 is bad shape, and is generally considered a bad move, but with the Black stone at 7, maybe it works in this case. Since the joseki move (marked) would not be sente, it is not unthinkable that White should try to find a different way to play. ]
;B[mp];W[lr]TR[fq]C[White ends in gote, but the stone at 20 has a strong effect on the lower side when compared to the joseki (shown as a var of White  18). Now Black will play to the upper side (two vars added). ]
(;B[nc]TR[mq]C[Gu Li chose the tight shimari. This gives White less potential to invade the corner. The drawback is that White has more room when White invades the upper side. ]
(;W[hc];B[de]C[Black 23 is a modern joseki in which Black attempts to play forcing moves against White's corner to form a strong group, and thus set up an attack against White on the upper side. ]
;W[ce];B[dc];W[ed];B[ec];W[cc];B[fd]C[Master now plays another unusual move (see vars). ]
(;W[cd]C[I have not seen the connection at 30 much in pro games, but it is suprisingly effective. Black is not alive yet. ]
;B[hd];W[id];B[he]C[White plays strongly here (see var). ]
(;W[ie]C[Why not cut? 
White plans to sacrifice the one stone (see var). ]
(;B[if]C[Black 35 is the vital point in shape. ];W[kc]C[White protects against the cut and starts to make a base on the side. ]
;B[jf];W[ke]C[Black should just surround from the center (see var). ]
(;B[je]TR[hf]C[With Black 39, Gu Li is trying to reduce White's eye shape, but this was a mistake. Black is filling his own liberties, making the cut (marked) an effective counter-attack later. ]
;W[jd];B[ld]
(;W[lc]TR[ke]C[White refuses to connect, crawling to make life instead. White will proceed to make good use of the marked stone by forcing Black to take it. ]
(;B[le];W[hf]TR[je]C[The damezumari caused by Black 39 (marked) comes into play. ]
;B[fe];W[hg]TR[ke]C[Black has already used a move at 43 to close off the center, but now is forced to play another move to take the marked stone. ]
;B[kd]TR[ke]C[While taking the marked stone, Black 47 also threatens the upper side White group by reducing it's eye space. ]
;W[nb];B[ob];W[mb]C[White makes life. ];B[fg]C[With 51, Black's group on the left is safe for now. ]
;W[qh];B[qi];W[oi]TR[ke]C[With 54, White plays a ladder blocking move, once again making use of the marked stone. ]
;B[kf];W[pi];B[qj];W[qe];B[qg]C[White seems to have all the territory, so Black must attack strongly here. ]
;W[rh]C[Cutting is better than the game move (see var). ]
(;B[pg]C[In the actual game, Black plays to take White's eyes. This did not lead to a successful attack. ]
;W[ph];B[rg];W[og];B[pe];W[oj];B[pl];W[ol];B[pm]TR[sg];W[lj]TR[sg]C[Black's side territory is small, as White can reduce with the hane (marked). After White 70, White has plenty of space in the center, and it is difficult for Black to continue the attack. White has a solid lead. ]
;B[mc];W[oc];B[pc];W[oa];B[od];W[ib];B[dh];W[jj];B[cl];W[eq];B[fp];W[dl];B[dk];W[el]
;B[cq];W[er];B[co];W[do];B[bn];W[cm];B[bm];W[ck];B[bl];W[ip];B[kr];W[ir];B[mr];W[nr]
;B[ls];W[ko];B[in];W[io];B[jn];W[kp];B[lp];W[hn];B[hm];W[gm];B[rp];W[oq];B[hl];W[gl]
;B[hj];W[lm];B[jl];W[kl];B[bg];W[dj];B[jk];W[kk];B[ji];W[fi];B[ij];W[eg];B[fh];W[eh]
;B[ef];W[dg];B[bk];W[gi];B[hh];W[cj];B[bi];W[sg];B[pf];W[lh];B[kj];W[om];B[di];W[ei]
;B[ns];W[os];B[ps];W[qs];B[gb];W[kb];B[sq];W[sr];B[sp];W[cr];B[cp];W[br];B[jr];W[hq])
(;B[ph];W[pg];B[oh];W[rg];B[qd];W[nh];B[og];W[pf];B[of]LB[re:A]C[Black allows White to live on the side, but Black can force with the hanetsugi at A later, so White's territory is small. Black still has a chance to make a big center. ]))
(;B[kd];W[md];B[le];W[mc]C[Bad for Black.]))
(;W[kd];B[lg];W[hf];B[fe];W[hg];B[ih];W[fg];B[hb]TR[ld]C[The peep has worked well in this var, taking away White's eye space. ]))
(;B[lg]C[ ];W[md];B[nf];W[hf];B[fe];W[hg];B[fg]LB[hb:B][lb:A]C[Black surrounds White from the center, and still has some potential to attack with A later. On the left, Black can play at B to make life, so that Black group is not weak. This looks good for Black. ]))
(;B[ic];W[jc];B[ib];W[if]LB[hb:B][hc:A][hf:C]C[White can still make use of the stone at A, as White has a number of forcing moves on the upper side that threaten to play at B, and also can squeeze from above with C. ]))
(;W[kc];B[ie];W[jd];B[kf]C[Black gets to build thickness in the center. ]))
(;W[ee];B[cb];W[bc];B[fe]C[Black has a potential life, and will be able to fight strongly on the upper side. All the following moves in this var are just added to show the life/death problem, and not meant to be a realistic continuation from this position. ]
;W[he];B[bb]
(;W[ab];B[gb];W[ba];B[eb];W[ca];B[fa];W[hb];B[db];W[da];B[ea]C[Alive])
(;W[gb];B[da]C[Alive.]))
(;W[kc];B[cb];W[ci]C[White avoids Black's attack by playing towards the sides. I like Master's move better than this.]))
(;W[kq];B[lp];W[jr]TR[fq]C[Much later in the game, this is a big move, putting pressure on the marked Black stone.]))
(;B[mc]LB[nc:A]C[I would play the large shimari at 1. When compared to Black A this move makes a White invasion to the upper side less effective. The trade off is that White has more room in the corner (3 vars for White's next move). ]
(;W[qd];B[qe];W[re];B[pe];W[rd]
(;B[rf];W[pc];B[oc];W[pb];B[qg]LB[rb:A]C[The basic joseki. Black can get a yose-ko with A later. This is an even result. ])
(;B[qg];W[pc];B[oc];W[pb];B[fe]C[Black plays for a big moyo, and I like this for Black.]))
(;W[hc];B[de];W[ce];B[dc];W[ed];B[ec];W[cc];B[fd]TR[mc]LB[nc:A]C[Compared to the game move at A, the marked Black stone increases Black's potential to attack on the upper side. ])
(;W[gd]C[White might play from above. ]))
(;B[jd];W[qc]C[When Black plays two side extensions from a star point, White 2 becomes the perfect invasion, and this is good for White already. ]
;B[pc];W[qd];B[qe];W[re];B[qf];W[rf];B[qg];W[pb];B[ob];W[qb];B[nc];W[ge];B[hd];W[if]
C[White has a lead in territory. This is an example of how effective the invasion at 2 is after Black has played two extensions from the star point.])
(;B[kr];W[kq];B[lp];W[mr];B[jr]C[It is too early in the game for Black to play this. ]))
(;W[nr];B[mc]LB[lo:A]C[White 1 is the joseki move. Locally, Black might be expected to protect at A, but when Black has a moyo in the upper right area, Black can expand the moyo first. ]
;W[mp];B[mq];W[mo];B[jp]TR[fq];W[on];B[qm]TR[fq]C[The marked stone works well to strengthen the lower side Black group. ]))
(;W[nr];B[mo];W[nc]LB[rp:B][oq:A]C[This is the most simple way to play, and the LL corner is a basic joseki. White 1 is played to protect the weak point at A, and reduces the potential Black territory on the lower side. White gets sente. Black has good shape on the outside and usually Black B is forcing, strengthening Black's control of the right side. ])
(;W[np]C[Pushing at 1 is a more complicated joseki that can lead to a fight. ];B[oq]
;W[or];B[pr];W[qr];B[nr];W[ps]C[Now Black has two choices (see vars). ]
(;B[no]TR[fq];W[mr];B[mp];W[ns];B[mn]C[This joseki has become popular in recent years. ])
(;B[mr];W[no];B[rq];W[rr];B[pm];W[ko];B[jp]LB[fq:A]C[I like this var for Black. The Black stone at A is well placed to strengthen Black's lower side group, and Black has potential to attack in the center. ])))
(;W[ec];B[jd];W[fd];B[jp]C[Black takes a local loss in the upper left and developes rapidly. ])
(;W[jd];B[dc];W[cc];B[cb]C[Black can make sabaki when White plays the pincer. ])
(;W[eq]
(;B[fp];W[jp]C[The local fight favors White. ])
(;B[jp];W[fp];B[jd]C[Black takes a local loss in the LL to control the right half of the board. ])))
(;B[qp];W[dq]C[Vars for Black's next move to show some corner enclosures that have become popular after Master played them. ]
(;B[op]C[This var shows Kono Rin 9P playing Master's new move in the 1st game of the Kisei match. This was in January, soon after Master made it's appearance on the internet to win 60 games against top pros. ]
;W[do];B[pj];W[nc];B[lc];W[qc];B[qd];W[pc];B[od];W[rc];B[nd];W[mc];B[md];W[jp];B[lq]
;W[lo]LB[mc:A][lb:B]C[Kono 9P played the Master move to bump at A but did not continue at B. ])
(;B[np]C[The strong point of Black's high shimari is that it works well with the sides and center.]
;W[oq];B[op];W[qq];B[pq];W[pr];B[pp];W[rr]C[The weak point of Black's shimari at 1 is that White can scoop out the corner relatively easily, as in this var. It is not good for White to do this immediately, so the sequence shown here might happen in the late middle game. ])
(;B[nq]C[When White has a komoku in the LL corner, Master is most likely to play this shimari. ]
;W[qj];B[co]C[Master's 'favorite' opening. ])))