_KIFU_START_ (;GM[1]FF[1]Wang vs Song]SZ[19]NE[B]SS[@@]AP[StoneLeaf2] ;B[qd];W[dd];B[pp];W[dp];B[oc];W[qn];B[nq];W[rp];B[ql];W[qq];B[qo];W[ro];B[pn];W[pm]
;B[qm];W[rn];B[om];W[gq];B[pr];W[qr];B[pj];W[fc];B[cj];W[ch];B[cm];W[co];B[ej];W[dk]
;B[dj];W[ce];B[cc];W[dc];B[be];W[bf];B[em];W[jq];B[kd];W[qe];B[pe];W[qf];B[rd];W[og]
;B[oe];W[qh];B[qi];W[oi];B[rh];W[ic];B[ph];W[lg];B[jg];W[ki];B[oh];W[nh];B[ng];W[nf]
;B[mg];W[mf];B[mh];W[mi];B[ni];W[lh];B[nh];W[je];B[jd];W[id];B[kf];W[lf];B[ke];W[ii]
;B[jb];W[eh];B[cq];W[dq];B[dr];W[er];B[cf];W[df];B[jp];W[kq];B[iq];W[ir];B[ip];W[hq]
;B[kp];W[bl];B[bm];W[bj];B[ck];W[bk];B[hm];W[hk];B[gj];W[hj];B[bi];W[ci];B[gk];W[hl]
;B[gm];W[im];B[in];W[jm];B[bd];W[db];B[bg];W[cg];B[af];W[bh];B[cb];W[mj];B[lq];W[lr]
;B[mr];W[bp];B[lm];W[jn];B[gh];W[lp];B[kr];W[mq];B[jr];W[np];B[lq];W[kq];B[nr];W[on]
;B[pl];W[oo];B[ls];W[ln];B[lq];W[mm];B[ml];W[ll];B[nm];W[mn];B[ib];W[hb];B[md];W[jc]
;B[kc];W[kb];B[lb];W[gl];B[fl];W[fn];B[en];W[fo];B[fm];W[lr];B[qs];W[rs];B[ps];W[pq]
;B[oq];W[os];B[or];W[rr];B[lq];W[of];B[pf];W[lr];B[hr];W[gr];B[is];W[nl];B[cf];W[ia]
;B[ka];W[bf];B[eo];W[ep];B[cf];W[he];B[da];W[bf];B[ao];W[ap];B[cf];W[ho];B[go];W[gn]
;B[do];W[hn];B[cn];W[bo];B[lq];W[cl];B[dl];W[lr];B[cp];W[bq];B[lq];W[dm];B[dn];W[lr]
;B[fp];W[cr];B[lq];W[sk];B[bf];W[lr];B[hp];W[io];B[lq];W[ea];B[ca];W[lr];B[gp];W[lq]
;B[fq];W[fr];B[nn];W[op];B[jq];W[mp];B[jo];W[in];B[rk];W[gs];B[hs];W[gg];B[eb];W[gb]
;B[fa];W[sm];B[sj];W[nk];B[hg];W[fg];B[hf];W[gf];B[cd];W[de];B[ec];W[ed];B[ok];W[nj]
;B[oj];W[po];B[al];W[ko];B[sl];W[rm];B[mo];W[pm];B[ak];W[ai];B[pn];W[ks];B[js];W[pm]
;B[hi];W[fi];B[pn];W[fj];B[fk];W[pm];B[ij];W[jj];B[pn];W[ms];B[ns];W[pm];B[ih];W[ji]
;B[pn];W[rl];B[no];W[pm];B[il];W[ik];B[pn];W[pg];B[lo];W[pi];B[kn];W[kl];B[rg];W[qg]
;B[km];W[jl];B[rf];W[re];B[se];W[sk];B[qj];W[qp];B[po]) ID[1]) _KIFU_END_

_LINK_END_

White: Chen Wang 7d (China)
Black: Hongsuk Song 7d (Korea)
Commentary: Michael Redmond

(Click on the diagram to launch the game viewer. SGF file available here)

White 6. A recently popular move, played successfully by many top Chinese and Korean pros. Their success makes it look good, but they win because they are strong, not necessarily because the move is good. I expect that eventually players will return to the classic move in the middle of the right side (White 6 at 287).
Black 7. This move has been popular in Korea. Two-space pincer attacks were popular in the past.
White 8. Black is expecting this and waiting to reply at 9 or 15. I played White 8 myself in a game against Kataoka and got a bad result. I’d now prefer to play White 8 at 287.
Black 9. Black 15 is seen more often but Black 9 is good too.
White 10. I’d prefer to attach at 127. If Black answers with a hane, White pulls back. And then cuts if Black plays 10.
Black 17. Already I think Black has an advantage.
White 18. White’s game plan is to wait for Black to extend on the upper side, and then go into action in the right half of the board..
Black 21. If Black extends on the upper side, White can counter with a ladder blocking move that would destroy the value of the extension. Black 21 eliminates the ladder more efficiently than just capturing at 127 would, leaving less room for White to invade the right side.
White 22. White is still waiting for Black to extend on the upper side before invading the right side. White is playing like Cho Chikun in his younger days, taking territory, planning to let Black make a big framework and then invade the framework at the most damaging time.
Black 23 to 27. Black refuses to be drawn into a potentially risky framework game. He seems to feel that he is ahead.
White 30. Takes more territory, still waiting for Black to extend on the upper side.
Black 31 and 33. These probes are a double-edged sword, and may have been played too early. Black wants to see whether White will answer 33 at 34, which leaves a potential ko in the top left corner, or at 233, which would protect the corner but allow Black to gouge out the right side by playing 77 later. White 32 and 34, however, strengthen White’s position, which could work to Black’s disadvantage if a fight developed in the center.
Black 35. Reinforces the left side in preparation for using the ko potential in the top left corner.
White 36. Takes more territory, still waiting for Black to make the first move at the top.
Black 37. The long-awaited extension.
White 38. The planned invasion.
White 44. Turns out badly. White has built his whole strategy around this invasion, so he should have thought it through more thoroughly. White 45, extending one line further, looks better. If Black replies at 276, White plays 49, followed by Black 287 and White 47. If Black then gives atari below 47, White connects, and when Black connects to the right of 287, White plays 59. That gives White a potential eye on the right side and much better shape than in the actual game.
Instead of answering White 45 at 276, Black might block at 287, but then White plays 276, followed by Black 46, White 53, Black 61, White 57, and White can later make eye shape on the side.
Black 47. If Black plays anywhere else, White can make good shape by playing 276, but after Black 47, White 276 would not work. White might not have foreseen Black 47.
White 48. White has no good move on the right side, so he turns elsewhere.
Black 49. The white stones invading the right side are now worthless. White’s invasion has only succeeded in increasing Black’s right-side territory. Compare this result with White’s playing 38 at 48. If Black again answered at 49, White could make a big sente slide to 200 in the endgame. With Black 45 and 47 on the board, however, White 200 would not be sente, and there would be an equal chance that Black would get a chance to block at 244 first. In addition, the black territory on the upper side has been solidified.
Black 51 to 63. Black secures the profit he has gained from White’s abortive invasion.
Black 71. Forestalls White 139. With a definite lead, Black is playing calmly and securely.
Black 77. Makes aji for a potential ko in the upper left corner, well executed by Black 103 to 109 in the game sequence.

White resigns after Black 289.