(;GM[1]FF[4]SZ[19]AP[SmartGo:3.0.1]CA[gb2312]
GN[?????]
PW[Magist]WR[P]
PB[bandari(P) (Zhang Ziliang 2p)]BR[P]
DT[2016-12-29-19-20-57]
PC[????]
KM[6.5]
RE[? ???]
TM[???? 0? 20? ?? 3?]
AN[Michael Redmond 9P]
C[In this game against Zhang Ziliang 2P, AlphaGo shows how it resembles, and how it differs from the great master Go Seigen. ]
MU[1];B[pd];W[pp];B[dc];W[cp];B[ce];W[eq];B[qf];W[qn];B[jc];W[df]
C[When I was going to Go Seigen's study group, he was always urging us to play this shoulder hit, as it was one of his favorite moves. He would say that in general, it is a good idea to give the opponent territory while taking influence in the early opening. ]
;B[de];W[ff]LB[ef:A]
C[AlphaGo resembles Go Seigen in it's emphasis on the center, it's willingness to take a small local loss to satisfy it's overall plan (true of all pros but I feel that AlphaGo takes it further than us), and in particular the shoulder hit at 10, which it played in about 10/60 openings. However, AlphaGo differs from Go Seigen with 12. Go Seigen always insisted that it was best to extend at A. The jump at 12 is actually the more conventional move. ]
;B[kq];W[mq];B[hq];W[pg]
C[While Go Seigen emphasized quick developement to the sides and center, AlphaGo in some of it's games seems to go directly for the center, almost as if it ignores the sides. Although White threatens to make big areas on the left or right sides, that is not the main focus of White's moves.]
;B[pf];W[ng];B[of]LB[ko:A]
C[This might look like a good shape move, but it was slack. Black should have played at A to reduce White's potential in the center and thr right side. ]
;W[ip]
C[This is a middle game joseki, the most common way to attack Black's lower side group, and it works well with White's center-oriented opening. It also happens to be a move that Go Seigen liked to play. ]
;B[iq];W[kp];B[jp];W[jo];B[jq];W[ko];B[lq];W[mp];B[og]LB[of:A]
C[This is the natural follow-up move after 19 (A). ];W[ni];B[pj];W[hn]
C[White continues to emphasize the center. ];B[fr];W[fq];B[er];W[dr];B[gq]
;W[es];B[gs];W[ob]
C[ White used the lower side attack to efficiently surround the LL and LR corners, and with 40 White reduces Black's moyo. AlphaGo is not really making efforts to surround any particular area.]
;B[qb];W[lc];B[ke];W[le]
C[I would play hane now (see var for 45). ]
(;B[kf]
C[Black 45 was slack. ];W[jb]
C[The combination of 44 and 46 is a common tesuji. If Black covers, White will cut (see var). ]
(;B[kb];W[jd]
C[White 48 is a tesuji.]
(;B[lb];W[kd];B[mc];W[ic];B[kc];W[ld];B[id];W[mb]
C[Although Black might seem to be attacking, it is White who is forcing the flow. White 56 is another tesuji, squeezing Black on the right before escaping on the left. ]
;B[hc];W[ib];B[nb];W[nc];B[ma];W[md];B[mb];W[hd];B[ie];W[gc];B[nd];W[lg]
C[Black tried to attack on the upper side, but the fight here did not turn out well for Black. ]
;B[lf];W[mf];B[he];W[gd];B[jh];W[li]
C[(see var for 75). ]
(;B[gh]
C[This was the losing move. ];W[eb]
C[White lives on the side. This is a large territorial move, and puts pressure on the UL corner Black group. Since Black could have played the same point forcing White to connect, it was a huge double sente move. ]
;B[ec];W[fb];B[bg];W[jj];B[dh];W[ge];B[ij];W[ik];B[hj];W[ji];B[ih];W[oc]
;B[oa];W[pa];B[pb];W[na];B[qa];W[oh];B[qi];W[cm]
C[Alphago is already in the safe mode. White will get a large territory in the LR corner or the center, and that will be enough to win. End of commentary. ]
;B[qq];W[qp];B[pr];W[rq];B[hb];W[ha];B[ja];W[gb];B[mh];W[lh];B[ok];W[nk]
;B[nl];W[ol];B[nj];W[mk];B[mj];W[lj];B[mi];W[mg];B[pl];W[om];B[pm];W[on]
;B[rp];W[ro];B[io];W[in];B[rr];W[sp];B[mr];W[nr];B[or];W[lr];B[os];W[ms]
;B[sr];W[go];B[kr];W[cj];B[hk];W[il];B[dk];W[ck];B[dq];W[cq];B[dl];W[dj]
;B[ej];W[dm];B[em];W[en];B[fp];W[dp];B[fl];W[ei];B[fj];W[rl];B[rk];W[qk]
;B[rj];W[ql];B[db];W[pk];B[oj];W[nh];B[cl];W[bl];B[bi];W[bj];B[fn];W[rh]
;B[qh];W[qj];B[pi];W[ri];B[rg];W[sk])
(;B[ge];W[fe];B[eb];W[fb];B[gg]
C[Black 3 is a huge move, not just in territory but in eye space too. White is not fully alive, so this fight will not completely defensive for Black. ]
))
(;B[kd];W[kc];B[ic];W[ib];B[hc];W[hb]
C[Good for White.]))
(;B[ib];W[ic];B[jd];W[hb];B[kb];W[ia];B[kc];W[mf]
C[White lives on both sides.]))
(;B[lf]
(;W[me];B[kc];W[kf];B[je];W[kg];B[ig];W[dj];B[lb]
C[1-3 is the proper shape to strengthen Black's keima shape. This is better than the game for Black. ]
)
(;W[jb];B[kc];W[kb];B[ld]
C[Black has good shape. ])))

